Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 19366C05027 for ; Sun, 19 Feb 2023 09:33:39 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229958AbjBSJdh (ORCPT ); Sun, 19 Feb 2023 04:33:37 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:54948 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229884AbjBSJdd (ORCPT ); Sun, 19 Feb 2023 04:33:33 -0500 Received: from mail-yw1-x114a.google.com (mail-yw1-x114a.google.com [IPv6:2607:f8b0:4864:20::114a]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id BB67E12071 for ; Sun, 19 Feb 2023 01:32:34 -0800 (PST) Received: by mail-yw1-x114a.google.com with SMTP id 00721157ae682-5368988d828so16004577b3.19 for ; Sun, 19 Feb 2023 01:32:34 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20210112; h=content-transfer-encoding:cc:to:from:subject:references :mime-version:message-id:in-reply-to:date:from:to:cc:subject:date :message-id:reply-to; bh=8LHsGfnmt6qYrack3gCp6lFG25TULdtBc4gz63x2LdI=; b=EJvBW4p+SFjnBzgue4/x6znEJDTvb83/64IopRB7FinD79V+Fb4cOHIjvjOT/5Qm6w WhfoxFK6YqpE74IuhwH334eo4/GdyfEdR8H6QRE+t6woO0+vejNSKWdNXRe/zbGD3aUN o5Nm4Ls2qUsw3U/MfnJ++e/l01cbXWvS54dcGdIWRvsrGUwdcN4r12GLhkiZ1djAQJkc PGkxww4ph/TCHOSei6uHBCTlgX26IY4qGoO3ARP442x6TLmPmXSdflJ/hwojUf0ZY0Zx jGOiIGes+vtOM2tNIc6HZvdlyV0o7ptHIddV51Go3XVq/FjiQiZZF2ogaBLmCR7M4N2+ IVfA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=content-transfer-encoding:cc:to:from:subject:references :mime-version:message-id:in-reply-to:date:x-gm-message-state:from:to :cc:subject:date:message-id:reply-to; bh=8LHsGfnmt6qYrack3gCp6lFG25TULdtBc4gz63x2LdI=; b=5Vq0KAG3Vk2O+/1MAAOGiyVkhaT6802XMJJZtPWfo5aDXjkPQ/Axno5S/Zw6Mxx8BG JXoIle3rvCo1+58Ntil0llNEjiooH17z375YKxxnTI2G+437BlrSyCWGPKIQDMHsK2iE /5qkzGMHVF+mCplBSmCbt+kBwISxcQ+ZHiC218IjYOww7qsjpvBVEylarQ56pIIGnaYO 4Ys2P4Odx6wW3ZV4+FWYjEnxgtt0iRhbeo0798++SYpRd48wmVFxQAm2D82K+Zv9b4IB a74EwklAU8vMyNFS7kaiKRmn35NfY6SMc2OOYxJwWi2lZM5Pc3Vy3nvtEOTgjZUDVpeG f1pA== X-Gm-Message-State: AO0yUKU+WJKbHbJQbNwWONBz1OfMJL4zol0KDQ2B/CIft7HAqncBxcJM eF6G0BW7ENbvhWi0kODS5OpSHV71TXY8 X-Google-Smtp-Source: AK7set/61u+fIQREmyhkisrJY2FufypDAeCtdcQP0z+3xJEEHLJ1BDcdFSLzmLWhurToe84Mf8NBcwT7bCU8 X-Received: from irogers.svl.corp.google.com ([2620:15c:2d4:203:cde9:3fbc:e1f1:6e3b]) (user=irogers job=sendgmr) by 2002:a25:e909:0:b0:803:19fa:2c20 with SMTP id n9-20020a25e909000000b0080319fa2c20mr120391ybd.207.1676799122365; Sun, 19 Feb 2023 01:32:02 -0800 (PST) Date: Sun, 19 Feb 2023 01:28:19 -0800 In-Reply-To: <20230219092848.639226-1-irogers@google.com> Message-Id: <20230219092848.639226-23-irogers@google.com> Mime-Version: 1.0 References: <20230219092848.639226-1-irogers@google.com> X-Mailer: git-send-email 2.39.2.637.g21b0678d19-goog Subject: [PATCH v1 22/51] perf vendor events intel: Refresh ivytown metrics From: Ian Rogers To: Peter Zijlstra , Ingo Molnar , Arnaldo Carvalho de Melo , Mark Rutland , Alexander Shishkin , Jiri Olsa , Namhyung Kim , Maxime Coquelin , Alexandre Torgue , Zhengjun Xing , Sandipan Das , James Clark , Kajol Jain , John Garry , Kan Liang , Adrian Hunter , Andrii Nakryiko , Eduard Zingerman , Suzuki Poulouse , Leo Yan , Florian Fischer , Ravi Bangoria , Jing Zhang , Sean Christopherson , Athira Rajeev , linux-kernel@vger.kernel.org, linux-perf-users@vger.kernel.org, linux-stm32@st-md-mailman.stormreply.com, linux-arm-kernel@lists.infradead.org, Perry Taylor , Caleb Biggers Cc: Stephane Eranian , Ian Rogers Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Update the ivytown metrics to TMA version 4.5. Generation was done using https://github.com/intel/perfmon. Notable changes are TMA info metrics are renamed from their node name to be lower case and prefixed by tma_info_, MetricThreshold expressions are added, and the smi_cost metric group is added replicating existing hard coded metrics in stat-shadow. Signed-off-by: Ian Rogers --- .../arch/x86/ivytown/ivt-metrics.json | 1311 +++++++++-------- 1 file changed, 736 insertions(+), 575 deletions(-) diff --git a/tools/perf/pmu-events/arch/x86/ivytown/ivt-metrics.json b/tool= s/perf/pmu-events/arch/x86/ivytown/ivt-metrics.json index 80444bc4e66e..89469b10fa30 100644 --- a/tools/perf/pmu-events/arch/x86/ivytown/ivt-metrics.json +++ b/tools/perf/pmu-events/arch/x86/ivytown/ivt-metrics.json @@ -1,866 +1,1027 @@ [ { - "BriefDescription": "This category represents fraction of slots wh= ere the processor's Frontend undersupplies its Backend", - "MetricExpr": "IDQ_UOPS_NOT_DELIVERED.CORE / SLOTS", - "MetricGroup": "PGO;TopdownL1;tma_L1_group", - "MetricName": "tma_frontend_bound", - "PublicDescription": "This category represents fraction of slots w= here the processor's Frontend undersupplies its Backend. Frontend denotes t= he first part of the processor core responsible to fetch operations that ar= e executed later on by the Backend part. Within the Frontend; a branch pred= ictor predicts the next address to fetch; cache-lines are fetched from the = memory subsystem; parsed into instructions; and lastly decoded into micro-o= perations (uops). Ideally the Frontend can issue Machine_Width uops every c= ycle to the Backend. Frontend Bound denotes unutilized issue-slots when the= re is no Backend stall; i.e. bubbles where Frontend delivered no uops while= Backend could have accepted them. For example; stalls due to instruction-c= ache misses would be categorized under Frontend Bound.", - "ScaleUnit": "100%" - }, - { - "BriefDescription": "This metric represents fraction of slots the = CPU was stalled due to Frontend latency issues", - "MetricExpr": "4 * min(CPU_CLK_UNHALTED.THREAD, IDQ_UOPS_NOT_DELIV= ERED.CYCLES_0_UOPS_DELIV.CORE) / SLOTS", - "MetricGroup": "Frontend;TopdownL2;tma_L2_group;tma_frontend_bound= _group", - "MetricName": "tma_fetch_latency", - "PublicDescription": "This metric represents fraction of slots the= CPU was stalled due to Frontend latency issues. For example; instruction-= cache misses; iTLB misses or fetch stalls after a branch misprediction are = categorized under Frontend Latency. In such cases; the Frontend eventually = delivers no uops for some period. Sample with: RS_EVENTS.EMPTY_END", + "BriefDescription": "C2 residency percent per package", + "MetricExpr": "cstate_pkg@c2\\-residency@ / TSC", + "MetricGroup": "Power", + "MetricName": "C2_Pkg_Residency", "ScaleUnit": "100%" }, { - "BriefDescription": "This metric represents fraction of cycles the= CPU was stalled due to instruction cache misses.", - "MetricExpr": "ICACHE.IFETCH_STALL / CLKS - tma_itlb_misses", - "MetricGroup": "BigFoot;FetchLat;IcMiss;TopdownL3;tma_fetch_latenc= y_group", - "MetricName": "tma_icache_misses", + "BriefDescription": "C3 residency percent per core", + "MetricExpr": "cstate_core@c3\\-residency@ / TSC", + "MetricGroup": "Power", + "MetricName": "C3_Core_Residency", "ScaleUnit": "100%" }, { - "BriefDescription": "This metric represents fraction of cycles the= CPU was stalled due to Instruction TLB (ITLB) misses", - "MetricExpr": "(12 * ITLB_MISSES.STLB_HIT + ITLB_MISSES.WALK_DURAT= ION) / CLKS", - "MetricGroup": "BigFoot;FetchLat;MemoryTLB;TopdownL3;tma_fetch_lat= ency_group", - "MetricName": "tma_itlb_misses", - "PublicDescription": "This metric represents fraction of cycles th= e CPU was stalled due to Instruction TLB (ITLB) misses. Sample with: ITLB_M= ISSES.WALK_COMPLETED", + "BriefDescription": "C3 residency percent per package", + "MetricExpr": "cstate_pkg@c3\\-residency@ / TSC", + "MetricGroup": "Power", + "MetricName": "C3_Pkg_Residency", "ScaleUnit": "100%" }, { - "BriefDescription": "This metric represents fraction of cycles the= CPU was stalled due to Branch Resteers", - "MetricExpr": "12 * (BR_MISP_RETIRED.ALL_BRANCHES + MACHINE_CLEARS= .COUNT + BACLEARS.ANY) / CLKS", - "MetricGroup": "FetchLat;TopdownL3;tma_fetch_latency_group", - "MetricName": "tma_branch_resteers", - "PublicDescription": "This metric represents fraction of cycles th= e CPU was stalled due to Branch Resteers. Branch Resteers estimates the Fro= ntend delay in fetching operations from corrected path; following all sorts= of miss-predicted branches. For example; branchy code with lots of miss-pr= edictions might get categorized under Branch Resteers. Note the value of th= is node may overlap with its siblings. Sample with: BR_MISP_RETIRED.ALL_BRA= NCHES", + "BriefDescription": "C6 residency percent per core", + "MetricExpr": "cstate_core@c6\\-residency@ / TSC", + "MetricGroup": "Power", + "MetricName": "C6_Core_Residency", "ScaleUnit": "100%" }, { - "BriefDescription": "This metric represents fraction of cycles the= CPU was stalled due to switches from DSB to MITE pipelines", - "MetricExpr": "DSB2MITE_SWITCHES.PENALTY_CYCLES / CLKS", - "MetricGroup": "DSBmiss;FetchLat;TopdownL3;tma_fetch_latency_group= ", - "MetricName": "tma_dsb_switches", - "PublicDescription": "This metric represents fraction of cycles th= e CPU was stalled due to switches from DSB to MITE pipelines. The DSB (deco= ded i-cache) is a Uop Cache where the front-end directly delivers Uops (mic= ro operations) avoiding heavy x86 decoding. The DSB pipeline has shorter la= tency and delivered higher bandwidth than the MITE (legacy instruction deco= de pipeline). Switching between the two pipelines can cause penalties hence= this metric measures the exposed penalty.", + "BriefDescription": "C6 residency percent per package", + "MetricExpr": "cstate_pkg@c6\\-residency@ / TSC", + "MetricGroup": "Power", + "MetricName": "C6_Pkg_Residency", "ScaleUnit": "100%" }, { - "BriefDescription": "This metric represents fraction of cycles CPU= was stalled due to Length Changing Prefixes (LCPs)", - "MetricExpr": "ILD_STALL.LCP / CLKS", - "MetricGroup": "FetchLat;TopdownL3;tma_fetch_latency_group", - "MetricName": "tma_lcp", - "PublicDescription": "This metric represents fraction of cycles CP= U was stalled due to Length Changing Prefixes (LCPs). Using proper compiler= flags or Intel Compiler by default will certainly avoid this. #Link: Optim= ization Guide about LCP BKMs.", + "BriefDescription": "C7 residency percent per core", + "MetricExpr": "cstate_core@c7\\-residency@ / TSC", + "MetricGroup": "Power", + "MetricName": "C7_Core_Residency", "ScaleUnit": "100%" }, { - "BriefDescription": "This metric estimates the fraction of cycles = when the CPU was stalled due to switches of uop delivery to the Microcode S= equencer (MS)", - "MetricExpr": "3 * IDQ.MS_SWITCHES / CLKS", - "MetricGroup": "FetchLat;MicroSeq;TopdownL3;tma_fetch_latency_grou= p", - "MetricName": "tma_ms_switches", - "PublicDescription": "This metric estimates the fraction of cycles= when the CPU was stalled due to switches of uop delivery to the Microcode = Sequencer (MS). Commonly used instructions are optimized for delivery by th= e DSB (decoded i-cache) or MITE (legacy instruction decode) pipelines. Cert= ain operations cannot be handled natively by the execution pipeline; and mu= st be performed by microcode (small programs injected into the execution st= ream). Switching to the MS too often can negatively impact performance. The= MS is designated to deliver long uop flows required by CISC instructions l= ike CPUID; or uncommon conditions like Floating Point Assists when dealing = with Denormals. Sample with: IDQ.MS_SWITCHES", + "BriefDescription": "C7 residency percent per package", + "MetricExpr": "cstate_pkg@c7\\-residency@ / TSC", + "MetricGroup": "Power", + "MetricName": "C7_Pkg_Residency", "ScaleUnit": "100%" }, { - "BriefDescription": "This metric represents fraction of slots the = CPU was stalled due to Frontend bandwidth issues", - "MetricExpr": "tma_frontend_bound - tma_fetch_latency", - "MetricGroup": "FetchBW;Frontend;TopdownL2;tma_L2_group;tma_fronte= nd_bound_group", - "MetricName": "tma_fetch_bandwidth", - "PublicDescription": "This metric represents fraction of slots the= CPU was stalled due to Frontend bandwidth issues. For example; inefficien= cies at the instruction decoders; or restrictions for caching in the DSB (d= ecoded uops cache) are categorized under Fetch Bandwidth. In such cases; th= e Frontend typically delivers suboptimal amount of uops to the Backend.", - "ScaleUnit": "100%" + "BriefDescription": "Uncore frequency per die [GHZ]", + "MetricExpr": "tma_info_socket_clks / #num_dies / duration_time / = 1e9", + "MetricGroup": "SoC", + "MetricName": "UNCORE_FREQ" }, { - "BriefDescription": "This metric represents Core fraction of cycle= s in which CPU was likely limited due to the MITE pipeline (the legacy deco= de pipeline)", - "MetricExpr": "(IDQ.ALL_MITE_CYCLES_ANY_UOPS - IDQ.ALL_MITE_CYCLES= _4_UOPS) / CORE_CLKS / 2", - "MetricGroup": "DSBmiss;FetchBW;TopdownL3;tma_fetch_bandwidth_grou= p", - "MetricName": "tma_mite", - "PublicDescription": "This metric represents Core fraction of cycl= es in which CPU was likely limited due to the MITE pipeline (the legacy dec= ode pipeline). This pipeline is used for code that was not pre-cached in th= e DSB or LSD. For example; inefficiencies due to asymmetric decoders; use o= f long immediate or LCP can manifest as MITE fetch bandwidth bottleneck.", + "BriefDescription": "Percentage of cycles spent in System Manageme= nt Interrupts.", + "MetricExpr": "((msr@aperf@ - cycles) / msr@aperf@ if msr@smi@ > 0= else 0)", + "MetricGroup": "smi", + "MetricName": "smi_cycles", + "MetricThreshold": "smi_cycles > 0.1", "ScaleUnit": "100%" }, { - "BriefDescription": "This metric represents Core fraction of cycle= s in which CPU was likely limited due to DSB (decoded uop cache) fetch pipe= line", - "MetricExpr": "(IDQ.ALL_DSB_CYCLES_ANY_UOPS - IDQ.ALL_DSB_CYCLES_4= _UOPS) / CORE_CLKS / 2", - "MetricGroup": "DSB;FetchBW;TopdownL3;tma_fetch_bandwidth_group", - "MetricName": "tma_dsb", - "PublicDescription": "This metric represents Core fraction of cycl= es in which CPU was likely limited due to DSB (decoded uop cache) fetch pip= eline. For example; inefficient utilization of the DSB cache structure or = bank conflict when reading from it; are categorized here.", - "ScaleUnit": "100%" + "BriefDescription": "Number of SMI interrupts.", + "MetricExpr": "msr@smi@", + "MetricGroup": "smi", + "MetricName": "smi_num", + "ScaleUnit": "1SMI#" }, { - "BriefDescription": "This category represents fraction of slots wa= sted due to incorrect speculations", - "MetricExpr": "(UOPS_ISSUED.ANY - UOPS_RETIRED.RETIRE_SLOTS + 4 * = (INT_MISC.RECOVERY_CYCLES_ANY / 2 if #SMT_on else INT_MISC.RECOVERY_CYCLES)= ) / SLOTS", - "MetricGroup": "TopdownL1;tma_L1_group", - "MetricName": "tma_bad_speculation", - "PublicDescription": "This category represents fraction of slots w= asted due to incorrect speculations. This include slots used to issue uops = that do not eventually get retired and slots for which the issue-pipeline w= as blocked due to recovery from earlier incorrect speculation. For example;= wasted work due to miss-predicted branches are categorized under Bad Specu= lation category. Incorrect data speculation followed by Memory Ordering Nuk= es is another example.", + "BriefDescription": "This metric estimates how often memory load a= ccesses were aliased by preceding stores (in program order) with a 4K addre= ss offset", + "MetricExpr": "LD_BLOCKS_PARTIAL.ADDRESS_ALIAS / tma_info_clks", + "MetricGroup": "TopdownL4;tma_L4_group;tma_l1_bound_group", + "MetricName": "tma_4k_aliasing", + "MetricThreshold": "tma_4k_aliasing > 0.2 & (tma_l1_bound > 0.1 & = (tma_memory_bound > 0.2 & tma_backend_bound > 0.2))", + "PublicDescription": "This metric estimates how often memory load = accesses were aliased by preceding stores (in program order) with a 4K addr= ess offset. False match is possible; which incur a few cycles load re-issue= . However; the short re-issue duration is often hidden by the out-of-order = core and HW optimizations; hence a user may safely ignore a high value of t= his metric unless it manages to propagate up into parent nodes of the hiera= rchy (e.g. to L1_Bound).", "ScaleUnit": "100%" }, { - "BriefDescription": "This metric represents fraction of slots the = CPU has wasted due to Branch Misprediction", - "MetricExpr": "BR_MISP_RETIRED.ALL_BRANCHES / (BR_MISP_RETIRED.ALL= _BRANCHES + MACHINE_CLEARS.COUNT) * tma_bad_speculation", - "MetricGroup": "BadSpec;BrMispredicts;TopdownL2;tma_L2_group;tma_b= ad_speculation_group", - "MetricName": "tma_branch_mispredicts", - "PublicDescription": "This metric represents fraction of slots the= CPU has wasted due to Branch Misprediction. These slots are either wasted= by uops fetched from an incorrectly speculated program path; or stalls whe= n the out-of-order part of the machine needs to recover its state from a sp= eculative path. Sample with: BR_MISP_RETIRED.ALL_BRANCHES", + "BriefDescription": "This metric represents Core fraction of cycle= s CPU dispatched uops on execution ports for ALU operations.", + "MetricConstraint": "NO_GROUP_EVENTS_NMI", + "MetricExpr": "(UOPS_DISPATCHED_PORT.PORT_0 + UOPS_DISPATCHED_PORT= .PORT_1 + UOPS_DISPATCHED_PORT.PORT_5) / (3 * tma_info_core_clks)", + "MetricGroup": "TopdownL5;tma_L5_group;tma_ports_utilized_3m_group= ", + "MetricName": "tma_alu_op_utilization", + "MetricThreshold": "tma_alu_op_utilization > 0.6", "ScaleUnit": "100%" }, { - "BriefDescription": "This metric represents fraction of slots the = CPU has wasted due to Machine Clears", - "MetricExpr": "tma_bad_speculation - tma_branch_mispredicts", - "MetricGroup": "BadSpec;MachineClears;TopdownL2;tma_L2_group;tma_b= ad_speculation_group", - "MetricName": "tma_machine_clears", - "PublicDescription": "This metric represents fraction of slots the= CPU has wasted due to Machine Clears. These slots are either wasted by uo= ps fetched prior to the clear; or stalls the out-of-order portion of the ma= chine needs to recover its state after the clear. For example; this can hap= pen due to memory ordering Nukes (e.g. Memory Disambiguation) or Self-Modif= ying-Code (SMC) nukes. Sample with: MACHINE_CLEARS.COUNT", + "BriefDescription": "This metric estimates fraction of slots the C= PU retired uops delivered by the Microcode_Sequencer as a result of Assists= ", + "MetricExpr": "100 * OTHER_ASSISTS.ANY_WB_ASSIST / tma_info_slots"= , + "MetricGroup": "TopdownL4;tma_L4_group;tma_microcode_sequencer_gro= up", + "MetricName": "tma_assists", + "MetricThreshold": "tma_assists > 0.1 & (tma_microcode_sequencer >= 0.05 & tma_heavy_operations > 0.1)", + "PublicDescription": "This metric estimates fraction of slots the = CPU retired uops delivered by the Microcode_Sequencer as a result of Assist= s. Assists are long sequences of uops that are required in certain corner-c= ases for operations that cannot be handled natively by the execution pipeli= ne. For example; when working with very small floating point values (so-cal= led Denormals); the FP units are not set up to perform these operations nat= ively. Instead; a sequence of instructions to perform the computation on th= e Denormals is injected into the pipeline. Since these microcode sequences = might be dozens of uops long; Assists can be extremely deleterious to perfo= rmance and they can be avoided in many cases. Sample with: OTHER_ASSISTS.AN= Y", "ScaleUnit": "100%" }, { "BriefDescription": "This category represents fraction of slots wh= ere no uops are being delivered due to a lack of required resources for acc= epting new uops in the Backend", + "MetricConstraint": "NO_GROUP_EVENTS_NMI", "MetricExpr": "1 - (tma_frontend_bound + tma_bad_speculation + tma= _retiring)", - "MetricGroup": "TopdownL1;tma_L1_group", + "MetricGroup": "TmaL1;TopdownL1;tma_L1_group", "MetricName": "tma_backend_bound", + "MetricThreshold": "tma_backend_bound > 0.2", "PublicDescription": "This category represents fraction of slots w= here no uops are being delivered due to a lack of required resources for ac= cepting new uops in the Backend. Backend is the portion of the processor co= re where the out-of-order scheduler dispatches ready uops into their respec= tive execution units; and once completed these uops get retired according t= o program order. For example; stalls due to data-cache misses or stalls due= to the divider unit being overloaded are both categorized under Backend Bo= und. Backend Bound is further divided into two main categories: Memory Boun= d and Core Bound.", "ScaleUnit": "100%" }, { - "BriefDescription": "This metric represents fraction of slots the = Memory subsystem within the Backend was a bottleneck", - "MetricExpr": "(min(CPU_CLK_UNHALTED.THREAD, CYCLE_ACTIVITY.STALLS= _LDM_PENDING) + RESOURCE_STALLS.SB) / (min(CPU_CLK_UNHALTED.THREAD, CYCLE_A= CTIVITY.CYCLES_NO_EXECUTE) + UOPS_EXECUTED.CYCLES_GE_1_UOP_EXEC - UOPS_EXEC= UTED.CYCLES_GE_3_UOPS_EXEC if IPC > 1.8 else (UOPS_EXECUTED.CYCLES_GE_2_UOP= S_EXEC - RS_EVENTS.EMPTY_CYCLES if tma_fetch_latency > 0.1 else RESOURCE_ST= ALLS.SB)) * tma_backend_bound", - "MetricGroup": "Backend;TopdownL2;tma_L2_group;tma_backend_bound_g= roup", - "MetricName": "tma_memory_bound", - "PublicDescription": "This metric represents fraction of slots the= Memory subsystem within the Backend was a bottleneck. Memory Bound estima= tes fraction of slots where pipeline is likely stalled due to demand load o= r store instructions. This accounts mainly for (1) non-completed in-flight = memory demand loads which coincides with execution units starvation; in add= ition to (2) cases where stores could impose backpressure on the pipeline w= hen many of them get buffered at the same time (less common out of the two)= .", + "BriefDescription": "This category represents fraction of slots wa= sted due to incorrect speculations", + "MetricExpr": "(UOPS_ISSUED.ANY - UOPS_RETIRED.RETIRE_SLOTS + 4 * = (INT_MISC.RECOVERY_CYCLES_ANY / 2 if #SMT_on else INT_MISC.RECOVERY_CYCLES)= ) / tma_info_slots", + "MetricGroup": "TmaL1;TopdownL1;tma_L1_group", + "MetricName": "tma_bad_speculation", + "MetricThreshold": "tma_bad_speculation > 0.15", + "PublicDescription": "This category represents fraction of slots w= asted due to incorrect speculations. This include slots used to issue uops = that do not eventually get retired and slots for which the issue-pipeline w= as blocked due to recovery from earlier incorrect speculation. For example;= wasted work due to miss-predicted branches are categorized under Bad Specu= lation category. Incorrect data speculation followed by Memory Ordering Nuk= es is another example.", "ScaleUnit": "100%" }, { - "BriefDescription": "This metric estimates how often the CPU was s= talled without loads missing the L1 data cache", - "MetricExpr": "max((min(CPU_CLK_UNHALTED.THREAD, CYCLE_ACTIVITY.ST= ALLS_LDM_PENDING) - CYCLE_ACTIVITY.STALLS_L1D_PENDING) / CLKS, 0)", - "MetricGroup": "CacheMisses;MemoryBound;TmaL3mem;TopdownL3;tma_mem= ory_bound_group", - "MetricName": "tma_l1_bound", - "PublicDescription": "This metric estimates how often the CPU was = stalled without loads missing the L1 data cache. The L1 data cache typical= ly has the shortest latency. However; in certain cases like loads blocked = on older stores; a load might suffer due to high latency even though it is = being satisfied by the L1. Another example is loads who miss in the TLB. Th= ese cases are characterized by execution unit stalls; while some non-comple= ted demand load lives in the machine without having that demand load missin= g the L1 cache. Sample with: MEM_LOAD_UOPS_RETIRED.L1_HIT_PS;MEM_LOAD_UOPS_= RETIRED.HIT_LFB_PS", + "BriefDescription": "This metric represents fraction of slots the = CPU has wasted due to Branch Misprediction", + "MetricConstraint": "NO_GROUP_EVENTS", + "MetricExpr": "BR_MISP_RETIRED.ALL_BRANCHES / (BR_MISP_RETIRED.ALL= _BRANCHES + MACHINE_CLEARS.COUNT) * tma_bad_speculation", + "MetricGroup": "BadSpec;BrMispredicts;TmaL2;TopdownL2;tma_L2_group= ;tma_bad_speculation_group;tma_issueBM", + "MetricName": "tma_branch_mispredicts", + "MetricThreshold": "tma_branch_mispredicts > 0.1 & tma_bad_specula= tion > 0.15", + "PublicDescription": "This metric represents fraction of slots the= CPU has wasted due to Branch Misprediction. These slots are either wasted= by uops fetched from an incorrectly speculated program path; or stalls whe= n the out-of-order part of the machine needs to recover its state from a sp= eculative path. Sample with: BR_MISP_RETIRED.ALL_BRANCHES. Related metrics:= tma_info_branch_misprediction_cost, tma_mispredicts_resteers", "ScaleUnit": "100%" }, { - "BriefDescription": "This metric roughly estimates the fraction of= cycles where the Data TLB (DTLB) was missed by load accesses", - "MetricExpr": "(7 * DTLB_LOAD_MISSES.STLB_HIT + DTLB_LOAD_MISSES.W= ALK_DURATION) / CLKS", - "MetricGroup": "MemoryTLB;TopdownL4;tma_l1_bound_group", - "MetricName": "tma_dtlb_load", - "PublicDescription": "This metric roughly estimates the fraction o= f cycles where the Data TLB (DTLB) was missed by load accesses. TLBs (Trans= lation Look-aside Buffers) are processor caches for recently used entries o= ut of the Page Tables that are used to map virtual- to physical-addresses b= y the operating system. This metric approximates the potential delay of dem= and loads missing the first-level data TLB (assuming worst case scenario wi= th back to back misses to different pages). This includes hitting in the se= cond-level TLB (STLB) as well as performing a hardware page walk on an STLB= miss. Sample with: MEM_UOPS_RETIRED.STLB_MISS_LOADS_PS", + "BriefDescription": "This metric represents fraction of cycles the= CPU was stalled due to Branch Resteers", + "MetricExpr": "12 * (BR_MISP_RETIRED.ALL_BRANCHES + MACHINE_CLEARS= .COUNT + BACLEARS.ANY) / tma_info_clks", + "MetricGroup": "FetchLat;TopdownL3;tma_L3_group;tma_fetch_latency_= group", + "MetricName": "tma_branch_resteers", + "MetricThreshold": "tma_branch_resteers > 0.05 & (tma_fetch_latenc= y > 0.1 & tma_frontend_bound > 0.15)", + "PublicDescription": "This metric represents fraction of cycles th= e CPU was stalled due to Branch Resteers. Branch Resteers estimates the Fro= ntend delay in fetching operations from corrected path; following all sorts= of miss-predicted branches. For example; branchy code with lots of miss-pr= edictions might get categorized under Branch Resteers. Note the value of th= is node may overlap with its siblings. Sample with: BR_MISP_RETIRED.ALL_BRA= NCHES", "ScaleUnit": "100%" }, { - "BriefDescription": "This metric roughly estimates fraction of cyc= les when the memory subsystem had loads blocked since they could not forwar= d data from earlier (in program order) overlapping stores", - "MetricExpr": "13 * LD_BLOCKS.STORE_FORWARD / CLKS", - "MetricGroup": "TopdownL4;tma_l1_bound_group", - "MetricName": "tma_store_fwd_blk", - "PublicDescription": "This metric roughly estimates fraction of cy= cles when the memory subsystem had loads blocked since they could not forwa= rd data from earlier (in program order) overlapping stores. To streamline m= emory operations in the pipeline; a load can avoid waiting for memory if a = prior in-flight store is writing the data that the load wants to read (stor= e forwarding process). However; in some cases the load may be blocked for a= significant time pending the store forward. For example; when the prior st= ore is writing a smaller region than the load is reading.", + "BriefDescription": "This metric estimates fraction of cycles the = CPU retired uops originated from CISC (complex instruction set computer) in= struction", + "MetricConstraint": "NO_GROUP_EVENTS_NMI", + "MetricExpr": "max(0, tma_microcode_sequencer - tma_assists)", + "MetricGroup": "TopdownL4;tma_L4_group;tma_microcode_sequencer_gro= up", + "MetricName": "tma_cisc", + "MetricThreshold": "tma_cisc > 0.1 & (tma_microcode_sequencer > 0.= 05 & tma_heavy_operations > 0.1)", + "PublicDescription": "This metric estimates fraction of cycles the= CPU retired uops originated from CISC (complex instruction set computer) i= nstruction. A CISC instruction has multiple uops that are required to perfo= rm the instruction's functionality as in the case of read-modify-write as a= n example. Since these instructions require multiple uops they may or may n= ot imply sub-optimal use of machine resources.", "ScaleUnit": "100%" }, { - "BriefDescription": "This metric represents fraction of cycles the= CPU spent handling cache misses due to lock operations", - "MetricExpr": "MEM_UOPS_RETIRED.LOCK_LOADS / MEM_UOPS_RETIRED.ALL_= STORES * min(CPU_CLK_UNHALTED.THREAD, OFFCORE_REQUESTS_OUTSTANDING.CYCLES_W= ITH_DEMAND_RFO) / CLKS", - "MetricGroup": "Offcore;TopdownL4;tma_l1_bound_group", - "MetricName": "tma_lock_latency", - "PublicDescription": "This metric represents fraction of cycles th= e CPU spent handling cache misses due to lock operations. Due to the microa= rchitecture handling of locks; they are classified as L1_Bound regardless o= f what memory source satisfied them. Sample with: MEM_UOPS_RETIRED.LOCK_LOA= DS_PS", + "BriefDescription": "This metric estimates fraction of cycles whil= e the memory subsystem was handling synchronizations due to contested acces= ses", + "MetricConstraint": "NO_GROUP_EVENTS", + "MetricExpr": "(60 * (MEM_LOAD_UOPS_LLC_HIT_RETIRED.XSNP_HITM * (1= + MEM_LOAD_UOPS_RETIRED.HIT_LFB / (MEM_LOAD_UOPS_RETIRED.L2_HIT + MEM_LOAD= _UOPS_RETIRED.LLC_HIT + MEM_LOAD_UOPS_LLC_HIT_RETIRED.XSNP_HIT + MEM_LOAD_U= OPS_LLC_HIT_RETIRED.XSNP_HITM + MEM_LOAD_UOPS_LLC_HIT_RETIRED.XSNP_MISS + M= EM_LOAD_UOPS_LLC_MISS_RETIRED.LOCAL_DRAM + MEM_LOAD_UOPS_LLC_MISS_RETIRED.R= EMOTE_DRAM + MEM_LOAD_UOPS_LLC_MISS_RETIRED.REMOTE_HITM + MEM_LOAD_UOPS_LLC= _MISS_RETIRED.REMOTE_FWD))) + 43 * (MEM_LOAD_UOPS_LLC_HIT_RETIRED.XSNP_MISS= * (1 + MEM_LOAD_UOPS_RETIRED.HIT_LFB / (MEM_LOAD_UOPS_RETIRED.L2_HIT + MEM= _LOAD_UOPS_RETIRED.LLC_HIT + MEM_LOAD_UOPS_LLC_HIT_RETIRED.XSNP_HIT + MEM_L= OAD_UOPS_LLC_HIT_RETIRED.XSNP_HITM + MEM_LOAD_UOPS_LLC_HIT_RETIRED.XSNP_MIS= S + MEM_LOAD_UOPS_LLC_MISS_RETIRED.LOCAL_DRAM + MEM_LOAD_UOPS_LLC_MISS_RETI= RED.REMOTE_DRAM + MEM_LOAD_UOPS_LLC_MISS_RETIRED.REMOTE_HITM + MEM_LOAD_UOP= S_LLC_MISS_RETIRED.REMOTE_FWD)))) / tma_info_clks", + "MetricGroup": "DataSharing;Offcore;Snoop;TopdownL4;tma_L4_group;t= ma_issueSyncxn;tma_l3_bound_group", + "MetricName": "tma_contested_accesses", + "MetricThreshold": "tma_contested_accesses > 0.05 & (tma_l3_bound = > 0.05 & (tma_memory_bound > 0.2 & tma_backend_bound > 0.2))", + "PublicDescription": "This metric estimates fraction of cycles whi= le the memory subsystem was handling synchronizations due to contested acce= sses. Contested accesses occur when data written by one Logical Processor a= re read by another Logical Processor on a different Physical Core. Examples= of contested accesses include synchronizations such as locks; true data sh= aring such as modified locked variables; and false sharing. Sample with: ME= M_LOAD_L3_HIT_RETIRED.XSNP_HITM_PS;MEM_LOAD_L3_HIT_RETIRED.XSNP_MISS_PS. Re= lated metrics: tma_data_sharing, tma_false_sharing, tma_machine_clears, tma= _remote_cache", "ScaleUnit": "100%" }, { - "BriefDescription": "This metric estimates fraction of cycles hand= ling memory load split accesses - load that cross 64-byte cache line bounda= ry", - "MetricExpr": "13 * LD_BLOCKS.NO_SR / CLKS", - "MetricGroup": "TopdownL4;tma_l1_bound_group", - "MetricName": "tma_split_loads", - "PublicDescription": "This metric estimates fraction of cycles han= dling memory load split accesses - load that cross 64-byte cache line bound= ary. Sample with: MEM_UOPS_RETIRED.SPLIT_LOADS_PS", + "BriefDescription": "This metric represents fraction of slots wher= e Core non-memory issues were of a bottleneck", + "MetricConstraint": "NO_GROUP_EVENTS", + "MetricExpr": "tma_backend_bound - tma_memory_bound", + "MetricGroup": "Backend;Compute;TmaL2;TopdownL2;tma_L2_group;tma_b= ackend_bound_group", + "MetricName": "tma_core_bound", + "MetricThreshold": "tma_core_bound > 0.1 & tma_backend_bound > 0.2= ", + "PublicDescription": "This metric represents fraction of slots whe= re Core non-memory issues were of a bottleneck. Shortage in hardware compu= te resources; or dependencies in software's instructions are both categoriz= ed under Core Bound. Hence it may indicate the machine ran out of an out-of= -order resource; certain execution units are overloaded or dependencies in = program's data- or instruction-flow are limiting the performance (e.g. FP-c= hained long-latency arithmetic operations).", "ScaleUnit": "100%" }, { - "BriefDescription": "This metric estimates how often memory load a= ccesses were aliased by preceding stores (in program order) with a 4K addre= ss offset", - "MetricExpr": "LD_BLOCKS_PARTIAL.ADDRESS_ALIAS / CLKS", - "MetricGroup": "TopdownL4;tma_l1_bound_group", - "MetricName": "tma_4k_aliasing", - "PublicDescription": "This metric estimates how often memory load = accesses were aliased by preceding stores (in program order) with a 4K addr= ess offset. False match is possible; which incur a few cycles load re-issue= . However; the short re-issue duration is often hidden by the out-of-order = core and HW optimizations; hence a user may safely ignore a high value of t= his metric unless it manages to propagate up into parent nodes of the hiera= rchy (e.g. to L1_Bound).", + "BriefDescription": "This metric estimates fraction of cycles whil= e the memory subsystem was handling synchronizations due to data-sharing ac= cesses", + "MetricConstraint": "NO_GROUP_EVENTS", + "MetricExpr": "43 * (MEM_LOAD_UOPS_LLC_HIT_RETIRED.XSNP_HIT * (1 += MEM_LOAD_UOPS_RETIRED.HIT_LFB / (MEM_LOAD_UOPS_RETIRED.L2_HIT + MEM_LOAD_U= OPS_RETIRED.LLC_HIT + MEM_LOAD_UOPS_LLC_HIT_RETIRED.XSNP_HIT + MEM_LOAD_UOP= S_LLC_HIT_RETIRED.XSNP_HITM + MEM_LOAD_UOPS_LLC_HIT_RETIRED.XSNP_MISS + MEM= _LOAD_UOPS_LLC_MISS_RETIRED.LOCAL_DRAM + MEM_LOAD_UOPS_LLC_MISS_RETIRED.REM= OTE_DRAM + MEM_LOAD_UOPS_LLC_MISS_RETIRED.REMOTE_HITM + MEM_LOAD_UOPS_LLC_M= ISS_RETIRED.REMOTE_FWD))) / tma_info_clks", + "MetricGroup": "Offcore;Snoop;TopdownL4;tma_L4_group;tma_issueSync= xn;tma_l3_bound_group", + "MetricName": "tma_data_sharing", + "MetricThreshold": "tma_data_sharing > 0.05 & (tma_l3_bound > 0.05= & (tma_memory_bound > 0.2 & tma_backend_bound > 0.2))", + "PublicDescription": "This metric estimates fraction of cycles whi= le the memory subsystem was handling synchronizations due to data-sharing a= ccesses. Data shared by multiple Logical Processors (even just read shared)= may cause increased access latency due to cache coherency. Excessive data = sharing can drastically harm multithreaded performance. Sample with: MEM_LO= AD_L3_HIT_RETIRED.XSNP_HIT_PS. Related metrics: tma_contested_accesses, tma= _false_sharing, tma_machine_clears, tma_remote_cache", "ScaleUnit": "100%" }, { - "BriefDescription": "This metric does a *rough estimation* of how = often L1D Fill Buffer unavailability limited additional L1D miss memory acc= ess requests to proceed", - "MetricExpr": "Load_Miss_Real_Latency * cpu@L1D_PEND_MISS.FB_FULL\= \,cmask\\=3D1@ / CLKS", - "MetricGroup": "MemoryBW;TopdownL4;tma_l1_bound_group", - "MetricName": "tma_fb_full", - "PublicDescription": "This metric does a *rough estimation* of how= often L1D Fill Buffer unavailability limited additional L1D miss memory ac= cess requests to proceed. The higher the metric value; the deeper the memor= y hierarchy level the misses are satisfied from (metric values >1 are valid= ). Often it hints on approaching bandwidth limits (to L2 cache; L3 cache or= external memory).", + "BriefDescription": "This metric represents fraction of cycles whe= re the Divider unit was active", + "MetricExpr": "ARITH.FPU_DIV_ACTIVE / tma_info_core_clks", + "MetricGroup": "TopdownL3;tma_L3_group;tma_core_bound_group", + "MetricName": "tma_divider", + "MetricThreshold": "tma_divider > 0.2 & (tma_core_bound > 0.1 & tm= a_backend_bound > 0.2)", + "PublicDescription": "This metric represents fraction of cycles wh= ere the Divider unit was active. Divide and square root instructions are pe= rformed by the Divider unit and can take considerably longer latency than i= nteger or Floating Point addition; subtraction; or multiplication. Sample w= ith: ARITH.DIVIDER_UOPS", "ScaleUnit": "100%" }, { - "BriefDescription": "This metric estimates how often the CPU was s= talled due to L2 cache accesses by loads", - "MetricExpr": "(CYCLE_ACTIVITY.STALLS_L1D_PENDING - CYCLE_ACTIVITY= .STALLS_L2_PENDING) / CLKS", - "MetricGroup": "CacheMisses;MemoryBound;TmaL3mem;TopdownL3;tma_mem= ory_bound_group", - "MetricName": "tma_l2_bound", - "PublicDescription": "This metric estimates how often the CPU was = stalled due to L2 cache accesses by loads. Avoiding cache misses (i.e. L1 = misses/L2 hits) can improve the latency and increase performance. Sample wi= th: MEM_LOAD_UOPS_RETIRED.L2_HIT_PS", + "BriefDescription": "This metric estimates how often the CPU was s= talled on accesses to external memory (DRAM) by loads", + "MetricConstraint": "NO_GROUP_EVENTS_SMT", + "MetricExpr": "(1 - MEM_LOAD_UOPS_RETIRED.LLC_HIT / (MEM_LOAD_UOPS= _RETIRED.LLC_HIT + 7 * MEM_LOAD_UOPS_RETIRED.LLC_MISS)) * CYCLE_ACTIVITY.ST= ALLS_L2_PENDING / tma_info_clks", + "MetricGroup": "MemoryBound;TmaL3mem;TopdownL3;tma_L3_group;tma_me= mory_bound_group", + "MetricName": "tma_dram_bound", + "MetricThreshold": "tma_dram_bound > 0.1 & (tma_memory_bound > 0.2= & tma_backend_bound > 0.2)", + "PublicDescription": "This metric estimates how often the CPU was = stalled on accesses to external memory (DRAM) by loads. Better caching can = improve the latency and increase performance. Sample with: MEM_LOAD_UOPS_RE= TIRED.L3_MISS_PS", "ScaleUnit": "100%" }, { - "BriefDescription": "This metric estimates how often the CPU was s= talled due to loads accesses to L3 cache or contended with a sibling Core", - "MetricExpr": "MEM_LOAD_UOPS_RETIRED.LLC_HIT / (MEM_LOAD_UOPS_RETI= RED.LLC_HIT + 7 * MEM_LOAD_UOPS_RETIRED.LLC_MISS) * CYCLE_ACTIVITY.STALLS_L= 2_PENDING / CLKS", - "MetricGroup": "CacheMisses;MemoryBound;TmaL3mem;TopdownL3;tma_mem= ory_bound_group", - "MetricName": "tma_l3_bound", - "PublicDescription": "This metric estimates how often the CPU was = stalled due to loads accesses to L3 cache or contended with a sibling Core.= Avoiding cache misses (i.e. L2 misses/L3 hits) can improve the latency an= d increase performance. Sample with: MEM_LOAD_UOPS_RETIRED.L3_HIT_PS", + "BriefDescription": "This metric represents Core fraction of cycle= s in which CPU was likely limited due to DSB (decoded uop cache) fetch pipe= line", + "MetricExpr": "(IDQ.ALL_DSB_CYCLES_ANY_UOPS - IDQ.ALL_DSB_CYCLES_4= _UOPS) / tma_info_core_clks / 2", + "MetricGroup": "DSB;FetchBW;TopdownL3;tma_L3_group;tma_fetch_bandw= idth_group", + "MetricName": "tma_dsb", + "MetricThreshold": "tma_dsb > 0.15 & (tma_fetch_bandwidth > 0.1 & = tma_frontend_bound > 0.15 & tma_info_ipc / 4 > 0.35)", + "PublicDescription": "This metric represents Core fraction of cycl= es in which CPU was likely limited due to DSB (decoded uop cache) fetch pip= eline. For example; inefficient utilization of the DSB cache structure or = bank conflict when reading from it; are categorized here.", "ScaleUnit": "100%" }, { - "BriefDescription": "This metric estimates fraction of cycles whil= e the memory subsystem was handling synchronizations due to contested acces= ses", - "MetricExpr": "(60 * (MEM_LOAD_UOPS_LLC_HIT_RETIRED.XSNP_HITM * (1= + MEM_LOAD_UOPS_RETIRED.HIT_LFB / (MEM_LOAD_UOPS_RETIRED.L2_HIT + MEM_LOAD= _UOPS_RETIRED.LLC_HIT + MEM_LOAD_UOPS_LLC_HIT_RETIRED.XSNP_HIT + MEM_LOAD_U= OPS_LLC_HIT_RETIRED.XSNP_HITM + MEM_LOAD_UOPS_LLC_HIT_RETIRED.XSNP_MISS + M= EM_LOAD_UOPS_LLC_MISS_RETIRED.LOCAL_DRAM + MEM_LOAD_UOPS_LLC_MISS_RETIRED.R= EMOTE_DRAM + MEM_LOAD_UOPS_LLC_MISS_RETIRED.REMOTE_HITM + MEM_LOAD_UOPS_LLC= _MISS_RETIRED.REMOTE_FWD))) + 43 * (MEM_LOAD_UOPS_LLC_HIT_RETIRED.XSNP_MISS= * (1 + MEM_LOAD_UOPS_RETIRED.HIT_LFB / (MEM_LOAD_UOPS_RETIRED.L2_HIT + MEM= _LOAD_UOPS_RETIRED.LLC_HIT + MEM_LOAD_UOPS_LLC_HIT_RETIRED.XSNP_HIT + MEM_L= OAD_UOPS_LLC_HIT_RETIRED.XSNP_HITM + MEM_LOAD_UOPS_LLC_HIT_RETIRED.XSNP_MIS= S + MEM_LOAD_UOPS_LLC_MISS_RETIRED.LOCAL_DRAM + MEM_LOAD_UOPS_LLC_MISS_RETI= RED.REMOTE_DRAM + MEM_LOAD_UOPS_LLC_MISS_RETIRED.REMOTE_HITM + MEM_LOAD_UOP= S_LLC_MISS_RETIRED.REMOTE_FWD)))) / CLKS", - "MetricGroup": "DataSharing;Offcore;Snoop;TopdownL4;tma_l3_bound_g= roup", - "MetricName": "tma_contested_accesses", - "PublicDescription": "This metric estimates fraction of cycles whi= le the memory subsystem was handling synchronizations due to contested acce= sses. Contested accesses occur when data written by one Logical Processor a= re read by another Logical Processor on a different Physical Core. Examples= of contested accesses include synchronizations such as locks; true data sh= aring such as modified locked variables; and false sharing. Sample with: ME= M_LOAD_L3_HIT_RETIRED.XSNP_HITM_PS;MEM_LOAD_L3_HIT_RETIRED.XSNP_MISS_PS", + "BriefDescription": "This metric represents fraction of cycles the= CPU was stalled due to switches from DSB to MITE pipelines", + "MetricExpr": "DSB2MITE_SWITCHES.PENALTY_CYCLES / tma_info_clks", + "MetricGroup": "DSBmiss;FetchLat;TopdownL3;tma_L3_group;tma_fetch_= latency_group;tma_issueFB", + "MetricName": "tma_dsb_switches", + "MetricThreshold": "tma_dsb_switches > 0.05 & (tma_fetch_latency >= 0.1 & tma_frontend_bound > 0.15)", + "PublicDescription": "This metric represents fraction of cycles th= e CPU was stalled due to switches from DSB to MITE pipelines. The DSB (deco= ded i-cache) is a Uop Cache where the front-end directly delivers Uops (mic= ro operations) avoiding heavy x86 decoding. The DSB pipeline has shorter la= tency and delivered higher bandwidth than the MITE (legacy instruction deco= de pipeline). Switching between the two pipelines can cause penalties hence= this metric measures the exposed penalty. Related metrics: tma_fetch_bandw= idth, tma_info_dsb_coverage, tma_info_iptb, tma_lcp", "ScaleUnit": "100%" }, { - "BriefDescription": "This metric estimates fraction of cycles whil= e the memory subsystem was handling synchronizations due to data-sharing ac= cesses", - "MetricExpr": "43 * (MEM_LOAD_UOPS_LLC_HIT_RETIRED.XSNP_HIT * (1 += MEM_LOAD_UOPS_RETIRED.HIT_LFB / (MEM_LOAD_UOPS_RETIRED.L2_HIT + MEM_LOAD_U= OPS_RETIRED.LLC_HIT + MEM_LOAD_UOPS_LLC_HIT_RETIRED.XSNP_HIT + MEM_LOAD_UOP= S_LLC_HIT_RETIRED.XSNP_HITM + MEM_LOAD_UOPS_LLC_HIT_RETIRED.XSNP_MISS + MEM= _LOAD_UOPS_LLC_MISS_RETIRED.LOCAL_DRAM + MEM_LOAD_UOPS_LLC_MISS_RETIRED.REM= OTE_DRAM + MEM_LOAD_UOPS_LLC_MISS_RETIRED.REMOTE_HITM + MEM_LOAD_UOPS_LLC_M= ISS_RETIRED.REMOTE_FWD))) / CLKS", - "MetricGroup": "Offcore;Snoop;TopdownL4;tma_l3_bound_group", - "MetricName": "tma_data_sharing", - "PublicDescription": "This metric estimates fraction of cycles whi= le the memory subsystem was handling synchronizations due to data-sharing a= ccesses. Data shared by multiple Logical Processors (even just read shared)= may cause increased access latency due to cache coherency. Excessive data = sharing can drastically harm multithreaded performance. Sample with: MEM_LO= AD_L3_HIT_RETIRED.XSNP_HIT_PS", + "BriefDescription": "This metric roughly estimates the fraction of= cycles where the Data TLB (DTLB) was missed by load accesses", + "MetricExpr": "(7 * DTLB_LOAD_MISSES.STLB_HIT + DTLB_LOAD_MISSES.W= ALK_DURATION) / tma_info_clks", + "MetricGroup": "MemoryTLB;TopdownL4;tma_L4_group;tma_issueTLB;tma_= l1_bound_group", + "MetricName": "tma_dtlb_load", + "MetricThreshold": "tma_dtlb_load > 0.1 & (tma_l1_bound > 0.1 & (t= ma_memory_bound > 0.2 & tma_backend_bound > 0.2))", + "PublicDescription": "This metric roughly estimates the fraction o= f cycles where the Data TLB (DTLB) was missed by load accesses. TLBs (Trans= lation Look-aside Buffers) are processor caches for recently used entries o= ut of the Page Tables that are used to map virtual- to physical-addresses b= y the operating system. This metric approximates the potential delay of dem= and loads missing the first-level data TLB (assuming worst case scenario wi= th back to back misses to different pages). This includes hitting in the se= cond-level TLB (STLB) as well as performing a hardware page walk on an STLB= miss. Sample with: MEM_UOPS_RETIRED.STLB_MISS_LOADS_PS. Related metrics: t= ma_dtlb_store", "ScaleUnit": "100%" }, { - "BriefDescription": "This metric represents fraction of cycles wit= h demand load accesses that hit the L3 cache under unloaded scenarios (poss= ibly L3 latency limited)", - "MetricExpr": "41 * (MEM_LOAD_UOPS_RETIRED.LLC_HIT * (1 + MEM_LOAD= _UOPS_RETIRED.HIT_LFB / (MEM_LOAD_UOPS_RETIRED.L2_HIT + MEM_LOAD_UOPS_RETIR= ED.LLC_HIT + MEM_LOAD_UOPS_LLC_HIT_RETIRED.XSNP_HIT + MEM_LOAD_UOPS_LLC_HIT= _RETIRED.XSNP_HITM + MEM_LOAD_UOPS_LLC_HIT_RETIRED.XSNP_MISS + MEM_LOAD_UOP= S_LLC_MISS_RETIRED.LOCAL_DRAM + MEM_LOAD_UOPS_LLC_MISS_RETIRED.REMOTE_DRAM = + MEM_LOAD_UOPS_LLC_MISS_RETIRED.REMOTE_HITM + MEM_LOAD_UOPS_LLC_MISS_RETIR= ED.REMOTE_FWD))) / CLKS", - "MetricGroup": "MemoryLat;TopdownL4;tma_l3_bound_group", - "MetricName": "tma_l3_hit_latency", - "PublicDescription": "This metric represents fraction of cycles wi= th demand load accesses that hit the L3 cache under unloaded scenarios (pos= sibly L3 latency limited). Avoiding private cache misses (i.e. L2 misses/L= 3 hits) will improve the latency; reduce contention with sibling physical c= ores and increase performance. Note the value of this node may overlap wit= h its siblings. Sample with: MEM_LOAD_UOPS_RETIRED.L3_HIT_PS", + "BriefDescription": "This metric roughly estimates the fraction of= cycles spent handling first-level data TLB store misses", + "MetricExpr": "(7 * DTLB_STORE_MISSES.STLB_HIT + DTLB_STORE_MISSES= .WALK_DURATION) / tma_info_clks", + "MetricGroup": "MemoryTLB;TopdownL4;tma_L4_group;tma_issueTLB;tma_= store_bound_group", + "MetricName": "tma_dtlb_store", + "MetricThreshold": "tma_dtlb_store > 0.05 & (tma_store_bound > 0.2= & (tma_memory_bound > 0.2 & tma_backend_bound > 0.2))", + "PublicDescription": "This metric roughly estimates the fraction o= f cycles spent handling first-level data TLB store misses. As with ordinar= y data caching; focus on improving data locality and reducing working-set s= ize to reduce DTLB overhead. Additionally; consider using profile-guided o= ptimization (PGO) to collocate frequently-used data on the same page. Try = using larger page sizes for large amounts of frequently-used data. Sample w= ith: MEM_UOPS_RETIRED.STLB_MISS_STORES_PS. Related metrics: tma_dtlb_load", "ScaleUnit": "100%" }, { - "BriefDescription": "This metric measures fraction of cycles where= the Super Queue (SQ) was full taking into account all request-types and bo= th hardware SMT threads (Logical Processors)", - "MetricExpr": "(OFFCORE_REQUESTS_BUFFER.SQ_FULL / 2 if #SMT_on els= e OFFCORE_REQUESTS_BUFFER.SQ_FULL) / CORE_CLKS", - "MetricGroup": "MemoryBW;Offcore;TopdownL4;tma_l3_bound_group", - "MetricName": "tma_sq_full", - "PublicDescription": "This metric measures fraction of cycles wher= e the Super Queue (SQ) was full taking into account all request-types and b= oth hardware SMT threads (Logical Processors). The Super Queue is used for = requests to access the L2 cache or to go out to the Uncore.", + "BriefDescription": "This metric roughly estimates how often CPU w= as handling synchronizations due to False Sharing", + "MetricExpr": "(200 * OFFCORE_RESPONSE.DEMAND_RFO.LLC_MISS.REMOTE_= HITM + 60 * OFFCORE_RESPONSE.DEMAND_RFO.LLC_HIT.HITM_OTHER_CORE) / tma_info= _clks", + "MetricGroup": "DataSharing;Offcore;Snoop;TopdownL4;tma_L4_group;t= ma_issueSyncxn;tma_store_bound_group", + "MetricName": "tma_false_sharing", + "MetricThreshold": "tma_false_sharing > 0.05 & (tma_store_bound > = 0.2 & (tma_memory_bound > 0.2 & tma_backend_bound > 0.2))", + "PublicDescription": "This metric roughly estimates how often CPU = was handling synchronizations due to False Sharing. False Sharing is a mult= ithreading hiccup; where multiple Logical Processors contend on different d= ata-elements mapped into the same cache line. Sample with: MEM_LOAD_L3_HIT_= RETIRED.XSNP_HITM_PS;OFFCORE_RESPONSE.DEMAND_RFO.L3_HIT.SNOOP_HITM. Related= metrics: tma_contested_accesses, tma_data_sharing, tma_machine_clears, tma= _remote_cache", "ScaleUnit": "100%" }, { - "BriefDescription": "This metric estimates how often the CPU was s= talled on accesses to external memory (DRAM) by loads", - "MetricExpr": "(1 - MEM_LOAD_UOPS_RETIRED.LLC_HIT / (MEM_LOAD_UOPS= _RETIRED.LLC_HIT + 7 * MEM_LOAD_UOPS_RETIRED.LLC_MISS)) * CYCLE_ACTIVITY.ST= ALLS_L2_PENDING / CLKS", - "MetricGroup": "MemoryBound;TmaL3mem;TopdownL3;tma_memory_bound_gr= oup", - "MetricName": "tma_dram_bound", - "PublicDescription": "This metric estimates how often the CPU was = stalled on accesses to external memory (DRAM) by loads. Better caching can = improve the latency and increase performance. Sample with: MEM_LOAD_UOPS_RE= TIRED.L3_MISS_PS", + "BriefDescription": "This metric does a *rough estimation* of how = often L1D Fill Buffer unavailability limited additional L1D miss memory acc= ess requests to proceed", + "MetricConstraint": "NO_GROUP_EVENTS", + "MetricExpr": "tma_info_load_miss_real_latency * cpu@L1D_PEND_MISS= .FB_FULL\\,cmask\\=3D1@ / tma_info_clks", + "MetricGroup": "MemoryBW;TopdownL4;tma_L4_group;tma_issueBW;tma_is= sueSL;tma_issueSmSt;tma_l1_bound_group", + "MetricName": "tma_fb_full", + "MetricThreshold": "tma_fb_full > 0.3", + "PublicDescription": "This metric does a *rough estimation* of how= often L1D Fill Buffer unavailability limited additional L1D miss memory ac= cess requests to proceed. The higher the metric value; the deeper the memor= y hierarchy level the misses are satisfied from (metric values >1 are valid= ). Often it hints on approaching bandwidth limits (to L2 cache; L3 cache or= external memory). Related metrics: tma_info_dram_bw_use, tma_mem_bandwidth= , tma_sq_full, tma_store_latency, tma_streaming_stores", "ScaleUnit": "100%" }, { - "BriefDescription": "This metric estimates fraction of cycles wher= e the core's performance was likely hurt due to approaching bandwidth limit= s of external memory (DRAM)", - "MetricExpr": "min(CPU_CLK_UNHALTED.THREAD, cpu@OFFCORE_REQUESTS_O= UTSTANDING.ALL_DATA_RD\\,cmask\\=3D6@) / CLKS", - "MetricGroup": "MemoryBW;Offcore;TopdownL4;tma_dram_bound_group", - "MetricName": "tma_mem_bandwidth", - "PublicDescription": "This metric estimates fraction of cycles whe= re the core's performance was likely hurt due to approaching bandwidth limi= ts of external memory (DRAM). The underlying heuristic assumes that a simi= lar off-core traffic is generated by all IA cores. This metric does not agg= regate non-data-read requests by this logical processor; requests from othe= r IA Logical Processors/Physical Cores/sockets; or other non-IA devices lik= e GPU; hence the maximum external memory bandwidth limits may or may not be= approached when this metric is flagged (see Uncore counters for that).", + "BriefDescription": "This metric represents fraction of slots the = CPU was stalled due to Frontend bandwidth issues", + "MetricExpr": "tma_frontend_bound - tma_fetch_latency", + "MetricGroup": "FetchBW;Frontend;TmaL2;TopdownL2;tma_L2_group;tma_= frontend_bound_group;tma_issueFB", + "MetricName": "tma_fetch_bandwidth", + "MetricThreshold": "tma_fetch_bandwidth > 0.1 & tma_frontend_bound= > 0.15 & tma_info_ipc / 4 > 0.35", + "PublicDescription": "This metric represents fraction of slots the= CPU was stalled due to Frontend bandwidth issues. For example; inefficien= cies at the instruction decoders; or restrictions for caching in the DSB (d= ecoded uops cache) are categorized under Fetch Bandwidth. In such cases; th= e Frontend typically delivers suboptimal amount of uops to the Backend. Rel= ated metrics: tma_dsb_switches, tma_info_dsb_coverage, tma_info_iptb, tma_l= cp", "ScaleUnit": "100%" }, { - "BriefDescription": "This metric estimates fraction of cycles wher= e the performance was likely hurt due to latency from external memory (DRAM= )", - "MetricExpr": "min(CPU_CLK_UNHALTED.THREAD, OFFCORE_REQUESTS_OUTST= ANDING.CYCLES_WITH_DATA_RD) / CLKS - tma_mem_bandwidth", - "MetricGroup": "MemoryLat;Offcore;TopdownL4;tma_dram_bound_group", - "MetricName": "tma_mem_latency", - "PublicDescription": "This metric estimates fraction of cycles whe= re the performance was likely hurt due to latency from external memory (DRA= M). This metric does not aggregate requests from other Logical Processors/= Physical Cores/sockets (see Uncore counters for that).", + "BriefDescription": "This metric represents fraction of slots the = CPU was stalled due to Frontend latency issues", + "MetricExpr": "4 * min(CPU_CLK_UNHALTED.THREAD, IDQ_UOPS_NOT_DELIV= ERED.CYCLES_0_UOPS_DELIV.CORE) / tma_info_slots", + "MetricGroup": "Frontend;TmaL2;TopdownL2;tma_L2_group;tma_frontend= _bound_group", + "MetricName": "tma_fetch_latency", + "MetricThreshold": "tma_fetch_latency > 0.1 & tma_frontend_bound >= 0.15", + "PublicDescription": "This metric represents fraction of slots the= CPU was stalled due to Frontend latency issues. For example; instruction-= cache misses; iTLB misses or fetch stalls after a branch misprediction are = categorized under Frontend Latency. In such cases; the Frontend eventually = delivers no uops for some period. Sample with: RS_EVENTS.EMPTY_END", "ScaleUnit": "100%" }, { - "BriefDescription": "This metric estimates fraction of cycles whil= e the memory subsystem was handling loads from local memory", - "MetricExpr": "200 * (MEM_LOAD_UOPS_LLC_MISS_RETIRED.LOCAL_DRAM * = (1 + MEM_LOAD_UOPS_RETIRED.HIT_LFB / (MEM_LOAD_UOPS_RETIRED.L2_HIT + MEM_LO= AD_UOPS_RETIRED.LLC_HIT + MEM_LOAD_UOPS_LLC_HIT_RETIRED.XSNP_HIT + MEM_LOAD= _UOPS_LLC_HIT_RETIRED.XSNP_HITM + MEM_LOAD_UOPS_LLC_HIT_RETIRED.XSNP_MISS += MEM_LOAD_UOPS_LLC_MISS_RETIRED.LOCAL_DRAM + MEM_LOAD_UOPS_LLC_MISS_RETIRED= .REMOTE_DRAM + MEM_LOAD_UOPS_LLC_MISS_RETIRED.REMOTE_HITM + MEM_LOAD_UOPS_L= LC_MISS_RETIRED.REMOTE_FWD))) / CLKS", - "MetricGroup": "Server;TopdownL5;tma_mem_latency_group", - "MetricName": "tma_local_dram", - "PublicDescription": "This metric estimates fraction of cycles whi= le the memory subsystem was handling loads from local memory. Caching will = improve the latency and increase performance. Sample with: MEM_LOAD_UOPS_L3= _MISS_RETIRED.LOCAL_DRAM_PS", + "BriefDescription": "This metric represents overall arithmetic flo= ating-point (FP) operations fraction the CPU has executed (retired)", + "MetricExpr": "tma_x87_use + tma_fp_scalar + tma_fp_vector", + "MetricGroup": "HPC;TopdownL3;tma_L3_group;tma_light_operations_gr= oup", + "MetricName": "tma_fp_arith", + "MetricThreshold": "tma_fp_arith > 0.2 & tma_light_operations > 0.= 6", + "PublicDescription": "This metric represents overall arithmetic fl= oating-point (FP) operations fraction the CPU has executed (retired). Note = this metric's value may exceed its parent due to use of \"Uops\" CountDomai= n and FMA double-counting.", "ScaleUnit": "100%" }, { - "BriefDescription": "This metric estimates fraction of cycles whil= e the memory subsystem was handling loads from remote memory", - "MetricExpr": "310 * (MEM_LOAD_UOPS_LLC_MISS_RETIRED.REMOTE_DRAM *= (1 + MEM_LOAD_UOPS_RETIRED.HIT_LFB / (MEM_LOAD_UOPS_RETIRED.L2_HIT + MEM_L= OAD_UOPS_RETIRED.LLC_HIT + MEM_LOAD_UOPS_LLC_HIT_RETIRED.XSNP_HIT + MEM_LOA= D_UOPS_LLC_HIT_RETIRED.XSNP_HITM + MEM_LOAD_UOPS_LLC_HIT_RETIRED.XSNP_MISS = + MEM_LOAD_UOPS_LLC_MISS_RETIRED.LOCAL_DRAM + MEM_LOAD_UOPS_LLC_MISS_RETIRE= D.REMOTE_DRAM + MEM_LOAD_UOPS_LLC_MISS_RETIRED.REMOTE_HITM + MEM_LOAD_UOPS_= LLC_MISS_RETIRED.REMOTE_FWD))) / CLKS", - "MetricGroup": "Server;Snoop;TopdownL5;tma_mem_latency_group", - "MetricName": "tma_remote_dram", - "PublicDescription": "This metric estimates fraction of cycles whi= le the memory subsystem was handling loads from remote memory. This is caus= ed often due to non-optimal NUMA allocations. #link to NUMA article Sample = with: MEM_LOAD_UOPS_L3_MISS_RETIRED.REMOTE_DRAM_PS", + "BriefDescription": "This metric approximates arithmetic floating-= point (FP) scalar uops fraction the CPU has retired", + "MetricExpr": "(FP_COMP_OPS_EXE.SSE_SCALAR_SINGLE + FP_COMP_OPS_EX= E.SSE_SCALAR_DOUBLE) / UOPS_EXECUTED.THREAD", + "MetricGroup": "Compute;Flops;TopdownL4;tma_L4_group;tma_fp_arith_= group;tma_issue2P", + "MetricName": "tma_fp_scalar", + "MetricThreshold": "tma_fp_scalar > 0.1 & (tma_fp_arith > 0.2 & tm= a_light_operations > 0.6)", + "PublicDescription": "This metric approximates arithmetic floating= -point (FP) scalar uops fraction the CPU has retired. May overcount due to = FMA double counting. Related metrics: tma_fp_vector, tma_fp_vector_512b, tm= a_port_0, tma_port_1, tma_port_5, tma_port_6, tma_ports_utilized_2", "ScaleUnit": "100%" }, { - "BriefDescription": "This metric estimates fraction of cycles whil= e the memory subsystem was handling loads from remote cache in other socket= s including synchronizations issues", - "MetricExpr": "(200 * (MEM_LOAD_UOPS_LLC_MISS_RETIRED.REMOTE_HITM = * (1 + MEM_LOAD_UOPS_RETIRED.HIT_LFB / (MEM_LOAD_UOPS_RETIRED.L2_HIT + MEM_= LOAD_UOPS_RETIRED.LLC_HIT + MEM_LOAD_UOPS_LLC_HIT_RETIRED.XSNP_HIT + MEM_LO= AD_UOPS_LLC_HIT_RETIRED.XSNP_HITM + MEM_LOAD_UOPS_LLC_HIT_RETIRED.XSNP_MISS= + MEM_LOAD_UOPS_LLC_MISS_RETIRED.LOCAL_DRAM + MEM_LOAD_UOPS_LLC_MISS_RETIR= ED.REMOTE_DRAM + MEM_LOAD_UOPS_LLC_MISS_RETIRED.REMOTE_HITM + MEM_LOAD_UOPS= _LLC_MISS_RETIRED.REMOTE_FWD))) + 180 * (MEM_LOAD_UOPS_LLC_MISS_RETIRED.REM= OTE_FWD * (1 + MEM_LOAD_UOPS_RETIRED.HIT_LFB / (MEM_LOAD_UOPS_RETIRED.L2_HI= T + MEM_LOAD_UOPS_RETIRED.LLC_HIT + MEM_LOAD_UOPS_LLC_HIT_RETIRED.XSNP_HIT = + MEM_LOAD_UOPS_LLC_HIT_RETIRED.XSNP_HITM + MEM_LOAD_UOPS_LLC_HIT_RETIRED.X= SNP_MISS + MEM_LOAD_UOPS_LLC_MISS_RETIRED.LOCAL_DRAM + MEM_LOAD_UOPS_LLC_MI= SS_RETIRED.REMOTE_DRAM + MEM_LOAD_UOPS_LLC_MISS_RETIRED.REMOTE_HITM + MEM_L= OAD_UOPS_LLC_MISS_RETIRED.REMOTE_FWD)))) / CLKS", - "MetricGroup": "Offcore;Server;Snoop;TopdownL5;tma_mem_latency_gro= up", - "MetricName": "tma_remote_cache", - "PublicDescription": "This metric estimates fraction of cycles whi= le the memory subsystem was handling loads from remote cache in other socke= ts including synchronizations issues. This is caused often due to non-optim= al NUMA allocations. #link to NUMA article Sample with: MEM_LOAD_UOPS_L3_MI= SS_RETIRED.REMOTE_HITM_PS;MEM_LOAD_UOPS_L3_MISS_RETIRED.REMOTE_FWD_PS", + "BriefDescription": "This metric approximates arithmetic floating-= point (FP) vector uops fraction the CPU has retired aggregated across all v= ector widths", + "MetricExpr": "(FP_COMP_OPS_EXE.SSE_PACKED_DOUBLE + FP_COMP_OPS_EX= E.SSE_PACKED_SINGLE + SIMD_FP_256.PACKED_SINGLE + SIMD_FP_256.PACKED_DOUBLE= ) / UOPS_EXECUTED.THREAD", + "MetricGroup": "Compute;Flops;TopdownL4;tma_L4_group;tma_fp_arith_= group;tma_issue2P", + "MetricName": "tma_fp_vector", + "MetricThreshold": "tma_fp_vector > 0.1 & (tma_fp_arith > 0.2 & tm= a_light_operations > 0.6)", + "PublicDescription": "This metric approximates arithmetic floating= -point (FP) vector uops fraction the CPU has retired aggregated across all = vector widths. May overcount due to FMA double counting. Related metrics: t= ma_fp_scalar, tma_fp_vector_512b, tma_port_0, tma_port_1, tma_port_5, tma_p= ort_6, tma_ports_utilized_2", "ScaleUnit": "100%" }, { - "BriefDescription": "This metric estimates how often CPU was stall= ed due to RFO store memory accesses; RFO store issue a read-for-ownership = request before the write", - "MetricExpr": "RESOURCE_STALLS.SB / CLKS", - "MetricGroup": "MemoryBound;TmaL3mem;TopdownL3;tma_memory_bound_gr= oup", - "MetricName": "tma_store_bound", - "PublicDescription": "This metric estimates how often CPU was stal= led due to RFO store memory accesses; RFO store issue a read-for-ownership= request before the write. Even though store accesses do not typically stal= l out-of-order CPUs; there are few cases where stores can lead to actual st= alls. This metric will be flagged should RFO stores be a bottleneck. Sample= with: MEM_UOPS_RETIRED.ALL_STORES_PS", + "BriefDescription": "This category represents fraction of slots wh= ere the processor's Frontend undersupplies its Backend", + "MetricExpr": "IDQ_UOPS_NOT_DELIVERED.CORE / tma_info_slots", + "MetricGroup": "PGO;TmaL1;TopdownL1;tma_L1_group", + "MetricName": "tma_frontend_bound", + "MetricThreshold": "tma_frontend_bound > 0.15", + "PublicDescription": "This category represents fraction of slots w= here the processor's Frontend undersupplies its Backend. Frontend denotes t= he first part of the processor core responsible to fetch operations that ar= e executed later on by the Backend part. Within the Frontend; a branch pred= ictor predicts the next address to fetch; cache-lines are fetched from the = memory subsystem; parsed into instructions; and lastly decoded into micro-o= perations (uops). Ideally the Frontend can issue Pipeline_Width uops every = cycle to the Backend. Frontend Bound denotes unutilized issue-slots when th= ere is no Backend stall; i.e. bubbles where Frontend delivered no uops whil= e Backend could have accepted them. For example; stalls due to instruction-= cache misses would be categorized under Frontend Bound.", "ScaleUnit": "100%" }, { - "BriefDescription": "This metric estimates fraction of cycles the = CPU spent handling L1D store misses", - "MetricExpr": "(L2_RQSTS.RFO_HIT * 9 * (1 - MEM_UOPS_RETIRED.LOCK_= LOADS / MEM_UOPS_RETIRED.ALL_STORES) + (1 - MEM_UOPS_RETIRED.LOCK_LOADS / M= EM_UOPS_RETIRED.ALL_STORES) * min(CPU_CLK_UNHALTED.THREAD, OFFCORE_REQUESTS= _OUTSTANDING.CYCLES_WITH_DEMAND_RFO)) / CLKS", - "MetricGroup": "MemoryLat;Offcore;TopdownL4;tma_store_bound_group"= , - "MetricName": "tma_store_latency", - "PublicDescription": "This metric estimates fraction of cycles the= CPU spent handling L1D store misses. Store accesses usually less impact ou= t-of-order core performance; however; holding resources for longer time can= lead into undesired implications (e.g. contention on L1D fill-buffer entri= es - see FB_Full)", + "BriefDescription": "This metric represents fraction of slots wher= e the CPU was retiring heavy-weight operations -- instructions that require= two or more uops or micro-coded sequences", + "MetricExpr": "tma_microcode_sequencer", + "MetricGroup": "Retire;TmaL2;TopdownL2;tma_L2_group;tma_retiring_g= roup", + "MetricName": "tma_heavy_operations", + "MetricThreshold": "tma_heavy_operations > 0.1", + "PublicDescription": "This metric represents fraction of slots whe= re the CPU was retiring heavy-weight operations -- instructions that requir= e two or more uops or micro-coded sequences. This highly-correlates with th= e uop length of these instructions/sequences.", "ScaleUnit": "100%" }, { - "BriefDescription": "This metric roughly estimates how often CPU w= as handling synchronizations due to False Sharing", - "MetricExpr": "(200 * OFFCORE_RESPONSE.DEMAND_RFO.LLC_MISS.REMOTE_= HITM + 60 * OFFCORE_RESPONSE.DEMAND_RFO.LLC_HIT.HITM_OTHER_CORE) / CLKS", - "MetricGroup": "DataSharing;Offcore;Snoop;TopdownL4;tma_store_boun= d_group", - "MetricName": "tma_false_sharing", - "PublicDescription": "This metric roughly estimates how often CPU = was handling synchronizations due to False Sharing. False Sharing is a mult= ithreading hiccup; where multiple Logical Processors contend on different d= ata-elements mapped into the same cache line. Sample with: MEM_LOAD_L3_HIT= _RETIRED.XSNP_HITM_PS;OFFCORE_RESPONSE.DEMAND_RFO.L3_HIT.SNOOP_HITM", + "BriefDescription": "This metric represents fraction of cycles the= CPU was stalled due to instruction cache misses.", + "MetricExpr": "ICACHE.IFETCH_STALL / tma_info_clks - tma_itlb_miss= es", + "MetricGroup": "BigFoot;FetchLat;IcMiss;TopdownL3;tma_L3_group;tma= _fetch_latency_group", + "MetricName": "tma_icache_misses", + "MetricThreshold": "tma_icache_misses > 0.05 & (tma_fetch_latency = > 0.1 & tma_frontend_bound > 0.15)", "ScaleUnit": "100%" }, { - "BriefDescription": "This metric represents rate of split store ac= cesses", - "MetricExpr": "2 * MEM_UOPS_RETIRED.SPLIT_STORES / CORE_CLKS", - "MetricGroup": "TopdownL4;tma_store_bound_group", - "MetricName": "tma_split_stores", - "PublicDescription": "This metric represents rate of split store a= ccesses. Consider aligning your data to the 64-byte cache line granularity= . Sample with: MEM_UOPS_RETIRED.SPLIT_STORES_PS", - "ScaleUnit": "100%" + "BriefDescription": "Measured Average Frequency for unhalted proce= ssors [GHz]", + "MetricExpr": "tma_info_turbo_utilization * TSC / 1e9 / duration_t= ime", + "MetricGroup": "Power;Summary", + "MetricName": "tma_info_average_frequency" }, { - "BriefDescription": "This metric roughly estimates the fraction of= cycles spent handling first-level data TLB store misses", - "MetricExpr": "(7 * DTLB_STORE_MISSES.STLB_HIT + DTLB_STORE_MISSES= .WALK_DURATION) / CLKS", - "MetricGroup": "MemoryTLB;TopdownL4;tma_store_bound_group", - "MetricName": "tma_dtlb_store", - "PublicDescription": "This metric roughly estimates the fraction o= f cycles spent handling first-level data TLB store misses. As with ordinar= y data caching; focus on improving data locality and reducing working-set s= ize to reduce DTLB overhead. Additionally; consider using profile-guided o= ptimization (PGO) to collocate frequently-used data on the same page. Try = using larger page sizes for large amounts of frequently-used data. Sample w= ith: MEM_UOPS_RETIRED.STLB_MISS_STORES_PS", - "ScaleUnit": "100%" + "BriefDescription": "Branch instructions per taken branch.", + "MetricExpr": "BR_INST_RETIRED.ALL_BRANCHES / BR_INST_RETIRED.NEAR= _TAKEN", + "MetricGroup": "Branches;Fed;PGO", + "MetricName": "tma_info_bptkbranch" }, { - "BriefDescription": "This metric represents fraction of slots wher= e Core non-memory issues were of a bottleneck", - "MetricExpr": "tma_backend_bound - tma_memory_bound", - "MetricGroup": "Backend;Compute;TopdownL2;tma_L2_group;tma_backend= _bound_group", - "MetricName": "tma_core_bound", - "PublicDescription": "This metric represents fraction of slots whe= re Core non-memory issues were of a bottleneck. Shortage in hardware compu= te resources; or dependencies in software's instructions are both categoriz= ed under Core Bound. Hence it may indicate the machine ran out of an out-of= -order resource; certain execution units are overloaded or dependencies in = program's data- or instruction-flow are limiting the performance (e.g. FP-c= hained long-latency arithmetic operations).", - "ScaleUnit": "100%" + "BriefDescription": "Per-Logical Processor actual clocks when the = Logical Processor is active.", + "MetricExpr": "CPU_CLK_UNHALTED.THREAD", + "MetricGroup": "Pipeline", + "MetricName": "tma_info_clks" }, { - "BriefDescription": "This metric represents fraction of cycles whe= re the Divider unit was active", - "MetricExpr": "ARITH.FPU_DIV_ACTIVE / CORE_CLKS", - "MetricGroup": "TopdownL3;tma_core_bound_group", - "MetricName": "tma_divider", - "PublicDescription": "This metric represents fraction of cycles wh= ere the Divider unit was active. Divide and square root instructions are pe= rformed by the Divider unit and can take considerably longer latency than i= nteger or Floating Point addition; subtraction; or multiplication. Sample w= ith: ARITH.DIVIDER_UOPS", - "ScaleUnit": "100%" + "BriefDescription": "Core actual clocks when any Logical Processor= is active on the Physical Core", + "MetricExpr": "(CPU_CLK_UNHALTED.THREAD / 2 * (1 + CPU_CLK_UNHALTE= D.ONE_THREAD_ACTIVE / CPU_CLK_UNHALTED.REF_XCLK) if #core_wide < 1 else (CP= U_CLK_UNHALTED.THREAD_ANY / 2 if #SMT_on else tma_info_clks))", + "MetricGroup": "SMT", + "MetricName": "tma_info_core_clks" }, { - "BriefDescription": "This metric estimates fraction of cycles the = CPU performance was potentially limited due to Core computation issues (non= divider-related)", - "MetricExpr": "((min(CPU_CLK_UNHALTED.THREAD, CYCLE_ACTIVITY.CYCLE= S_NO_EXECUTE) + UOPS_EXECUTED.CYCLES_GE_1_UOP_EXEC - UOPS_EXECUTED.CYCLES_G= E_3_UOPS_EXEC if IPC > 1.8 else (UOPS_EXECUTED.CYCLES_GE_2_UOPS_EXEC - RS_E= VENTS.EMPTY_CYCLES if tma_fetch_latency > 0.1 else RESOURCE_STALLS.SB)) - R= ESOURCE_STALLS.SB - min(CPU_CLK_UNHALTED.THREAD, CYCLE_ACTIVITY.STALLS_LDM_= PENDING)) / CLKS", - "MetricGroup": "PortsUtil;TopdownL3;tma_core_bound_group", - "MetricName": "tma_ports_utilization", - "PublicDescription": "This metric estimates fraction of cycles the= CPU performance was potentially limited due to Core computation issues (no= n divider-related). Two distinct categories can be attributed into this me= tric: (1) heavy data-dependency among contiguous instructions would manifes= t in this metric - such cases are often referred to as low Instruction Leve= l Parallelism (ILP). (2) Contention on some hardware execution unit other t= han Divider. For example; when there are too many multiply operations.", - "ScaleUnit": "100%" + "BriefDescription": "Instructions Per Cycle across hyper-threads (= per physical core)", + "MetricExpr": "INST_RETIRED.ANY / tma_info_core_clks", + "MetricGroup": "Ret;SMT;TmaL1;tma_L1_group", + "MetricName": "tma_info_coreipc" }, { - "BriefDescription": "This metric represents fraction of cycles CPU= executed no uops on any execution port (Logical Processor cycles since ICL= , Physical Core cycles otherwise)", - "MetricExpr": "(cpu@UOPS_EXECUTED.CORE\\,inv\\,cmask\\=3D1@ / 2 if= #SMT_on else (min(CPU_CLK_UNHALTED.THREAD, CYCLE_ACTIVITY.CYCLES_NO_EXECUT= E) - RS_EVENTS.EMPTY_CYCLES if tma_fetch_latency > 0.1 else 0) / CORE_CLKS)= ", - "MetricGroup": "PortsUtil;TopdownL4;tma_ports_utilization_group", - "MetricName": "tma_ports_utilized_0", - "PublicDescription": "This metric represents fraction of cycles CP= U executed no uops on any execution port (Logical Processor cycles since IC= L, Physical Core cycles otherwise). Long-latency instructions like divides = may contribute to this metric.", - "ScaleUnit": "100%" + "BriefDescription": "Cycles Per Instruction (per Logical Processor= )", + "MetricExpr": "1 / tma_info_ipc", + "MetricGroup": "Mem;Pipeline", + "MetricName": "tma_info_cpi" }, { - "BriefDescription": "This metric represents fraction of cycles whe= re the CPU executed total of 1 uop per cycle on all execution ports (Logica= l Processor cycles since ICL, Physical Core cycles otherwise)", - "MetricExpr": "((cpu@UOPS_EXECUTED.CORE\\,cmask\\=3D1@ - cpu@UOPS_= EXECUTED.CORE\\,cmask\\=3D2@) / 2 if #SMT_on else (UOPS_EXECUTED.CYCLES_GE_= 1_UOP_EXEC - UOPS_EXECUTED.CYCLES_GE_2_UOPS_EXEC) / CORE_CLKS)", - "MetricGroup": "PortsUtil;TopdownL4;tma_ports_utilization_group", - "MetricName": "tma_ports_utilized_1", - "PublicDescription": "This metric represents fraction of cycles wh= ere the CPU executed total of 1 uop per cycle on all execution ports (Logic= al Processor cycles since ICL, Physical Core cycles otherwise). This can be= due to heavy data-dependency among software instructions; or over oversubs= cribing a particular hardware resource. In some other cases with high 1_Por= t_Utilized and L1_Bound; this metric can point to L1 data-cache latency bot= tleneck that may not necessarily manifest with complete execution starvatio= n (due to the short L1 latency e.g. walking a linked list) - looking at the= assembly can be helpful.", - "ScaleUnit": "100%" + "BriefDescription": "Average CPU Utilization", + "MetricExpr": "CPU_CLK_UNHALTED.REF_TSC / TSC", + "MetricGroup": "HPC;Summary", + "MetricName": "tma_info_cpu_utilization" }, { - "BriefDescription": "This metric represents fraction of cycles CPU= executed total of 2 uops per cycle on all execution ports (Logical Process= or cycles since ICL, Physical Core cycles otherwise)", - "MetricExpr": "((cpu@UOPS_EXECUTED.CORE\\,cmask\\=3D2@ - cpu@UOPS_= EXECUTED.CORE\\,cmask\\=3D3@) / 2 if #SMT_on else (UOPS_EXECUTED.CYCLES_GE_= 2_UOPS_EXEC - UOPS_EXECUTED.CYCLES_GE_3_UOPS_EXEC) / CORE_CLKS)", - "MetricGroup": "PortsUtil;TopdownL4;tma_ports_utilization_group", - "MetricName": "tma_ports_utilized_2", - "PublicDescription": "This metric represents fraction of cycles CP= U executed total of 2 uops per cycle on all execution ports (Logical Proces= sor cycles since ICL, Physical Core cycles otherwise). Loop Vectorization = -most compilers feature auto-Vectorization options today- reduces pressure = on the execution ports as multiple elements are calculated with same uop.", - "ScaleUnit": "100%" + "BriefDescription": "Average Parallel L2 cache miss data reads", + "MetricExpr": "OFFCORE_REQUESTS_OUTSTANDING.ALL_DATA_RD / OFFCORE_= REQUESTS_OUTSTANDING.CYCLES_WITH_DATA_RD", + "MetricGroup": "Memory_BW;Offcore", + "MetricName": "tma_info_data_l2_mlp" }, { - "BriefDescription": "This metric represents fraction of cycles CPU= executed total of 3 or more uops per cycle on all execution ports (Logical= Processor cycles since ICL, Physical Core cycles otherwise).", - "MetricExpr": "(cpu@UOPS_EXECUTED.CORE\\,cmask\\=3D3@ / 2 if #SMT_= on else UOPS_EXECUTED.CYCLES_GE_3_UOPS_EXEC) / CORE_CLKS", - "MetricGroup": "PortsUtil;TopdownL4;tma_ports_utilization_group", - "MetricName": "tma_ports_utilized_3m", - "ScaleUnit": "100%" + "BriefDescription": "Average external Memory Bandwidth Use for rea= ds and writes [GB / sec]", + "MetricExpr": "64 * (UNC_M_CAS_COUNT.RD + UNC_M_CAS_COUNT.WR) / 1e= 9 / duration_time", + "MetricGroup": "HPC;Mem;MemoryBW;SoC;tma_issueBW", + "MetricName": "tma_info_dram_bw_use", + "PublicDescription": "Average external Memory Bandwidth Use for re= ads and writes [GB / sec]. Related metrics: tma_fb_full, tma_mem_bandwidth,= tma_sq_full" }, { - "BriefDescription": "This metric represents Core fraction of cycle= s CPU dispatched uops on execution ports for ALU operations.", - "MetricExpr": "(UOPS_DISPATCHED_PORT.PORT_0 + UOPS_DISPATCHED_PORT= .PORT_1 + UOPS_DISPATCHED_PORT.PORT_5) / (3 * CORE_CLKS)", - "MetricGroup": "TopdownL5;tma_ports_utilized_3m_group", - "MetricName": "tma_alu_op_utilization", - "ScaleUnit": "100%" + "BriefDescription": "Fraction of Uops delivered by the DSB (aka De= coded ICache; or Uop Cache)", + "MetricExpr": "IDQ.DSB_UOPS / (IDQ.DSB_UOPS + LSD.UOPS + IDQ.MITE_= UOPS + IDQ.MS_UOPS)", + "MetricGroup": "DSB;Fed;FetchBW;tma_issueFB", + "MetricName": "tma_info_dsb_coverage", + "MetricThreshold": "tma_info_dsb_coverage < 0.7 & tma_info_ipc / 4= > 0.35", + "PublicDescription": "Fraction of Uops delivered by the DSB (aka D= ecoded ICache; or Uop Cache). Related metrics: tma_dsb_switches, tma_fetch_= bandwidth, tma_info_iptb, tma_lcp" }, { - "BriefDescription": "This metric represents Core fraction of cycle= s CPU dispatched uops on execution port 0 ([SNB+] ALU; [HSW+] ALU and 2nd b= ranch) Sample with: UOPS_DISPATCHED_PORT.PORT_0", - "MetricExpr": "UOPS_DISPATCHED_PORT.PORT_0 / CORE_CLKS", - "MetricGroup": "Compute;TopdownL6;tma_alu_op_utilization_group", - "MetricName": "tma_port_0", - "ScaleUnit": "100%" + "BriefDescription": "Instruction-Level-Parallelism (average number= of uops executed when there is execution) per-thread", + "MetricExpr": "UOPS_EXECUTED.THREAD / cpu@UOPS_EXECUTED.THREAD\\,c= mask\\=3D1@", + "MetricGroup": "Cor;Pipeline;PortsUtil;SMT", + "MetricName": "tma_info_execute" }, { - "BriefDescription": "This metric represents Core fraction of cycle= s CPU dispatched uops on execution port 1 (ALU) Sample with: UOPS_DISPATCHE= D_PORT.PORT_1", - "MetricExpr": "UOPS_DISPATCHED_PORT.PORT_1 / CORE_CLKS", - "MetricGroup": "TopdownL6;tma_alu_op_utilization_group", - "MetricName": "tma_port_1", - "ScaleUnit": "100%" - }, - { - "BriefDescription": "This metric represents Core fraction of cycle= s CPU dispatched uops on execution port 5 ([SNB+] Branches and ALU; [HSW+] = ALU) Sample with: UOPS_DISPATCHED.PORT_5", - "MetricExpr": "UOPS_DISPATCHED_PORT.PORT_5 / CORE_CLKS", - "MetricGroup": "TopdownL6;tma_alu_op_utilization_group", - "MetricName": "tma_port_5", - "ScaleUnit": "100%" + "BriefDescription": "The ratio of Executed- by Issued-Uops", + "MetricExpr": "UOPS_EXECUTED.THREAD / UOPS_ISSUED.ANY", + "MetricGroup": "Cor;Pipeline", + "MetricName": "tma_info_execute_per_issue", + "PublicDescription": "The ratio of Executed- by Issued-Uops. Ratio= > 1 suggests high rate of uop micro-fusions. Ratio < 1 suggest high rate o= f \"execute\" at rename stage." }, { - "BriefDescription": "This metric represents Core fraction of cycle= s CPU dispatched uops on execution port for Load operations Sample with: UO= PS_DISPATCHED.PORT_2_3", - "MetricExpr": "(UOPS_DISPATCHED_PORT.PORT_2 + UOPS_DISPATCHED_PORT= .PORT_3 - UOPS_DISPATCHED_PORT.PORT_4) / (2 * CORE_CLKS)", - "MetricGroup": "TopdownL5;tma_ports_utilized_3m_group", - "MetricName": "tma_load_op_utilization", - "ScaleUnit": "100%" + "BriefDescription": "Floating Point Operations Per Cycle", + "MetricExpr": "(FP_COMP_OPS_EXE.SSE_SCALAR_SINGLE + FP_COMP_OPS_EX= E.SSE_SCALAR_DOUBLE + 2 * FP_COMP_OPS_EXE.SSE_PACKED_DOUBLE + 4 * (FP_COMP_= OPS_EXE.SSE_PACKED_SINGLE + SIMD_FP_256.PACKED_DOUBLE) + 8 * SIMD_FP_256.PA= CKED_SINGLE) / tma_info_core_clks", + "MetricGroup": "Flops;Ret", + "MetricName": "tma_info_flopc" }, { - "BriefDescription": "This metric represents Core fraction of cycle= s CPU dispatched uops on execution port 2 ([SNB+]Loads and Store-address; [= ICL+] Loads) Sample with: UOPS_DISPATCHED_PORT.PORT_2", - "MetricExpr": "UOPS_DISPATCHED_PORT.PORT_2 / CORE_CLKS", - "MetricGroup": "TopdownL6;tma_load_op_utilization_group", - "MetricName": "tma_port_2", - "ScaleUnit": "100%" + "BriefDescription": "Giga Floating Point Operations Per Second", + "MetricExpr": "(FP_COMP_OPS_EXE.SSE_SCALAR_SINGLE + FP_COMP_OPS_EX= E.SSE_SCALAR_DOUBLE + 2 * FP_COMP_OPS_EXE.SSE_PACKED_DOUBLE + 4 * (FP_COMP_= OPS_EXE.SSE_PACKED_SINGLE + SIMD_FP_256.PACKED_DOUBLE) + 8 * SIMD_FP_256.PA= CKED_SINGLE) / 1e9 / duration_time", + "MetricGroup": "Cor;Flops;HPC", + "MetricName": "tma_info_gflops", + "PublicDescription": "Giga Floating Point Operations Per Second. A= ggregate across all supported options of: FP precisions, scalar and vector = instructions, vector-width and AMX engine." }, { - "BriefDescription": "This metric represents Core fraction of cycle= s CPU dispatched uops on execution port 3 ([SNB+]Loads and Store-address; [= ICL+] Loads) Sample with: UOPS_DISPATCHED_PORT.PORT_3", - "MetricExpr": "UOPS_DISPATCHED_PORT.PORT_3 / CORE_CLKS", - "MetricGroup": "TopdownL6;tma_load_op_utilization_group", - "MetricName": "tma_port_3", - "ScaleUnit": "100%" + "BriefDescription": "Instruction-Level-Parallelism (average number= of uops executed when there is execution) per-core", + "MetricExpr": "UOPS_EXECUTED.THREAD / (cpu@UOPS_EXECUTED.CORE\\,cm= ask\\=3D1@ / 2 if #SMT_on else UOPS_EXECUTED.CYCLES_GE_1_UOP_EXEC)", + "MetricGroup": "Backend;Cor;Pipeline;PortsUtil", + "MetricName": "tma_info_ilp" }, { - "BriefDescription": "This metric represents Core fraction of cycle= s CPU dispatched uops on execution port for Store operations", - "MetricExpr": "tma_port_4", - "MetricGroup": "TopdownL5;tma_ports_utilized_3m_group", - "MetricName": "tma_store_op_utilization", - "ScaleUnit": "100%" + "BriefDescription": "Total number of retired Instructions", + "MetricExpr": "INST_RETIRED.ANY", + "MetricGroup": "Summary;TmaL1;tma_L1_group", + "MetricName": "tma_info_instructions", + "PublicDescription": "Total number of retired Instructions. Sample= with: INST_RETIRED.PREC_DIST" }, { - "BriefDescription": "This metric represents Core fraction of cycle= s CPU dispatched uops on execution port 4 (Store-data) Sample with: UOPS_DI= SPATCHED_PORT.PORT_4", - "MetricExpr": "UOPS_DISPATCHED_PORT.PORT_4 / CORE_CLKS", - "MetricGroup": "TopdownL6;tma_store_op_utilization_group", - "MetricName": "tma_port_4", - "ScaleUnit": "100%" + "BriefDescription": "Instructions per FP Arithmetic instruction (l= ower number means higher occurrence rate)", + "MetricExpr": "1 / (tma_fp_scalar + tma_fp_vector)", + "MetricGroup": "Flops;InsType", + "MetricName": "tma_info_iparith", + "MetricThreshold": "tma_info_iparith < 10", + "PublicDescription": "Instructions per FP Arithmetic instruction (= lower number means higher occurrence rate). May undercount due to FMA doubl= e counting. Approximated prior to BDW." }, { - "BriefDescription": "This category represents fraction of slots ut= ilized by useful work i.e. issued uops that eventually get retired", - "MetricExpr": "UOPS_RETIRED.RETIRE_SLOTS / SLOTS", - "MetricGroup": "TopdownL1;tma_L1_group", - "MetricName": "tma_retiring", - "PublicDescription": "This category represents fraction of slots u= tilized by useful work i.e. issued uops that eventually get retired. Ideall= y; all pipeline slots would be attributed to the Retiring category. Retiri= ng of 100% would indicate the maximum Pipeline_Width throughput was achieve= d. Maximizing Retiring typically increases the Instructions-per-cycle (see= IPC metric). Note that a high Retiring value does not necessary mean there= is no room for more performance. For example; Heavy-operations or Microco= de Assists are categorized under Retiring. They often indicate suboptimal p= erformance and can often be optimized or avoided. Sample with: UOPS_RETIRE= D.RETIRE_SLOTS", - "ScaleUnit": "100%" + "BriefDescription": "Instructions per Branch (lower number means h= igher occurrence rate)", + "MetricExpr": "INST_RETIRED.ANY / BR_INST_RETIRED.ALL_BRANCHES", + "MetricGroup": "Branches;Fed;InsType", + "MetricName": "tma_info_ipbranch", + "MetricThreshold": "tma_info_ipbranch < 8" }, { - "BriefDescription": "This metric represents fraction of slots wher= e the CPU was retiring light-weight operations -- instructions that require= no more than one uop (micro-operation)", - "MetricExpr": "tma_retiring - tma_heavy_operations", - "MetricGroup": "Retire;TopdownL2;tma_L2_group;tma_retiring_group", - "MetricName": "tma_light_operations", - "PublicDescription": "This metric represents fraction of slots whe= re the CPU was retiring light-weight operations -- instructions that requir= e no more than one uop (micro-operation). This correlates with total number= of instructions used by the program. A uops-per-instruction (see UPI metri= c) ratio of 1 or less should be expected for decently optimized software ru= nning on Intel Core/Xeon products. While this often indicates efficient X86= instructions were executed; high value does not necessarily mean better pe= rformance cannot be achieved. Sample with: INST_RETIRED.PREC_DIST", - "ScaleUnit": "100%" + "BriefDescription": "Instructions Per Cycle (per Logical Processor= )", + "MetricExpr": "INST_RETIRED.ANY / tma_info_clks", + "MetricGroup": "Ret;Summary", + "MetricName": "tma_info_ipc" }, { - "BriefDescription": "This metric represents overall arithmetic flo= ating-point (FP) operations fraction the CPU has executed (retired)", - "MetricExpr": "tma_x87_use + tma_fp_scalar + tma_fp_vector", - "MetricGroup": "HPC;TopdownL3;tma_light_operations_group", - "MetricName": "tma_fp_arith", - "PublicDescription": "This metric represents overall arithmetic fl= oating-point (FP) operations fraction the CPU has executed (retired). Note = this metric's value may exceed its parent due to use of \"Uops\" CountDomai= n and FMA double-counting.", - "ScaleUnit": "100%" + "BriefDescription": "Instructions per (near) call (lower number me= ans higher occurrence rate)", + "MetricExpr": "INST_RETIRED.ANY / BR_INST_RETIRED.NEAR_CALL", + "MetricGroup": "Branches;Fed;PGO", + "MetricName": "tma_info_ipcall", + "MetricThreshold": "tma_info_ipcall < 200" }, { - "BriefDescription": "This metric serves as an approximation of leg= acy x87 usage", - "MetricExpr": "UOPS_RETIRED.RETIRE_SLOTS * FP_COMP_OPS_EXE.X87 / U= OPS_EXECUTED.THREAD", - "MetricGroup": "Compute;TopdownL4;tma_fp_arith_group", - "MetricName": "tma_x87_use", - "PublicDescription": "This metric serves as an approximation of le= gacy x87 usage. It accounts for instructions beyond X87 FP arithmetic opera= tions; hence may be used as a thermometer to avoid X87 high usage and prefe= rably upgrade to modern ISA. See Tip under Tuning Hint.", - "ScaleUnit": "100%" + "BriefDescription": "Instructions per Far Branch ( Far Branches ap= ply upon transition from application to operating system, handling interrup= ts, exceptions) [lower number means higher occurrence rate]", + "MetricExpr": "INST_RETIRED.ANY / BR_INST_RETIRED.FAR_BRANCH:u", + "MetricGroup": "Branches;OS", + "MetricName": "tma_info_ipfarbranch", + "MetricThreshold": "tma_info_ipfarbranch < 1e6" }, { - "BriefDescription": "This metric approximates arithmetic floating-= point (FP) scalar uops fraction the CPU has retired", - "MetricExpr": "(FP_COMP_OPS_EXE.SSE_SCALAR_SINGLE + FP_COMP_OPS_EX= E.SSE_SCALAR_DOUBLE) / UOPS_EXECUTED.THREAD", - "MetricGroup": "Compute;Flops;TopdownL4;tma_fp_arith_group", - "MetricName": "tma_fp_scalar", - "PublicDescription": "This metric approximates arithmetic floating= -point (FP) scalar uops fraction the CPU has retired. May overcount due to = FMA double counting.", - "ScaleUnit": "100%" + "BriefDescription": "Instructions per Load (lower number means hig= her occurrence rate)", + "MetricExpr": "INST_RETIRED.ANY / MEM_UOPS_RETIRED.ALL_LOADS", + "MetricGroup": "InsType", + "MetricName": "tma_info_ipload", + "MetricThreshold": "tma_info_ipload < 3" }, { - "BriefDescription": "This metric approximates arithmetic floating-= point (FP) vector uops fraction the CPU has retired aggregated across all v= ector widths", - "MetricExpr": "(FP_COMP_OPS_EXE.SSE_PACKED_DOUBLE + FP_COMP_OPS_EX= E.SSE_PACKED_SINGLE + SIMD_FP_256.PACKED_SINGLE + SIMD_FP_256.PACKED_DOUBLE= ) / UOPS_EXECUTED.THREAD", - "MetricGroup": "Compute;Flops;TopdownL4;tma_fp_arith_group", - "MetricName": "tma_fp_vector", - "PublicDescription": "This metric approximates arithmetic floating= -point (FP) vector uops fraction the CPU has retired aggregated across all = vector widths. May overcount due to FMA double counting.", - "ScaleUnit": "100%" + "BriefDescription": "Instructions per retired mispredicts for indi= rect CALL or JMP branches (lower number means higher occurrence rate).", + "MetricExpr": "tma_info_instructions / (UOPS_RETIRED.RETIRE_SLOTS = / UOPS_ISSUED.ANY * cpu@BR_MISP_EXEC.ALL_BRANCHES\\,umask\\=3D0xE4@)", + "MetricGroup": "Bad;BrMispredicts", + "MetricName": "tma_info_ipmisp_indirect", + "MetricThreshold": "tma_info_ipmisp_indirect < 1e3" }, { - "BriefDescription": "This metric represents fraction of slots wher= e the CPU was retiring heavy-weight operations -- instructions that require= two or more uops or microcoded sequences", - "MetricExpr": "tma_microcode_sequencer", - "MetricGroup": "Retire;TopdownL2;tma_L2_group;tma_retiring_group", - "MetricName": "tma_heavy_operations", - "PublicDescription": "This metric represents fraction of slots whe= re the CPU was retiring heavy-weight operations -- instructions that requir= e two or more uops or microcoded sequences. This highly-correlates with the= uop length of these instructions/sequences.", - "ScaleUnit": "100%" + "BriefDescription": "Number of Instructions per non-speculative Br= anch Misprediction (JEClear) (lower number means higher occurrence rate)", + "MetricExpr": "INST_RETIRED.ANY / BR_MISP_RETIRED.ALL_BRANCHES", + "MetricGroup": "Bad;BadSpec;BrMispredicts", + "MetricName": "tma_info_ipmispredict", + "MetricThreshold": "tma_info_ipmispredict < 200" }, { - "BriefDescription": "This metric represents fraction of slots the = CPU was retiring uops fetched by the Microcode Sequencer (MS) unit", - "MetricExpr": "UOPS_RETIRED.RETIRE_SLOTS / UOPS_ISSUED.ANY * IDQ.M= S_UOPS / SLOTS", - "MetricGroup": "MicroSeq;TopdownL3;tma_heavy_operations_group", - "MetricName": "tma_microcode_sequencer", - "PublicDescription": "This metric represents fraction of slots the= CPU was retiring uops fetched by the Microcode Sequencer (MS) unit. The M= S is used for CISC instructions not supported by the default decoders (like= repeat move strings; or CPUID); or by microcode assists used to address so= me operation modes (like in Floating Point assists). These cases can often = be avoided. Sample with: IDQ.MS_UOPS", - "ScaleUnit": "100%" + "BriefDescription": "Instructions per Store (lower number means hi= gher occurrence rate)", + "MetricExpr": "INST_RETIRED.ANY / MEM_UOPS_RETIRED.ALL_STORES", + "MetricGroup": "InsType", + "MetricName": "tma_info_ipstore", + "MetricThreshold": "tma_info_ipstore < 8" }, { - "BriefDescription": "This metric estimates fraction of slots the C= PU retired uops delivered by the Microcode_Sequencer as a result of Assists= ", - "MetricExpr": "100 * OTHER_ASSISTS.ANY_WB_ASSIST / SLOTS", - "MetricGroup": "TopdownL4;tma_microcode_sequencer_group", - "MetricName": "tma_assists", - "PublicDescription": "This metric estimates fraction of slots the = CPU retired uops delivered by the Microcode_Sequencer as a result of Assist= s. Assists are long sequences of uops that are required in certain corner-c= ases for operations that cannot be handled natively by the execution pipeli= ne. For example; when working with very small floating point values (so-cal= led Denormals); the FP units are not set up to perform these operations nat= ively. Instead; a sequence of instructions to perform the computation on th= e Denormals is injected into the pipeline. Since these microcode sequences = might be dozens of uops long; Assists can be extremely deleterious to perfo= rmance and they can be avoided in many cases. Sample with: OTHER_ASSISTS.AN= Y", - "ScaleUnit": "100%" + "BriefDescription": "Instruction per taken branch", + "MetricExpr": "INST_RETIRED.ANY / BR_INST_RETIRED.NEAR_TAKEN", + "MetricGroup": "Branches;Fed;FetchBW;Frontend;PGO;tma_issueFB", + "MetricName": "tma_info_iptb", + "MetricThreshold": "tma_info_iptb < 9", + "PublicDescription": "Instruction per taken branch. Related metric= s: tma_dsb_switches, tma_fetch_bandwidth, tma_info_dsb_coverage, tma_lcp" }, { - "BriefDescription": "This metric estimates fraction of cycles the = CPU retired uops originated from CISC (complex instruction set computer) in= struction", - "MetricExpr": "max(0, tma_microcode_sequencer - tma_assists)", - "MetricGroup": "TopdownL4;tma_microcode_sequencer_group", - "MetricName": "tma_cisc", - "PublicDescription": "This metric estimates fraction of cycles the= CPU retired uops originated from CISC (complex instruction set computer) i= nstruction. A CISC instruction has multiple uops that are required to perfo= rm the instruction's functionality as in the case of read-modify-write as a= n example. Since these instructions require multiple uops they may or may n= ot imply sub-optimal use of machine resources.", - "ScaleUnit": "100%" + "BriefDescription": "Instructions per speculative Unknown Branch M= isprediction (BAClear) (lower number means higher occurrence rate)", + "MetricExpr": "tma_info_instructions / BACLEARS.ANY", + "MetricGroup": "Fed", + "MetricName": "tma_info_ipunknown_branch" }, { - "BriefDescription": "Instructions Per Cycle (per Logical Processor= )", - "MetricExpr": "INST_RETIRED.ANY / CLKS", - "MetricGroup": "Ret;Summary", - "MetricName": "IPC" + "BriefDescription": "Cycles Per Instruction for the Operating Syst= em (OS) Kernel mode", + "MetricExpr": "CPU_CLK_UNHALTED.THREAD_P:k / INST_RETIRED.ANY_P:k"= , + "MetricGroup": "OS", + "MetricName": "tma_info_kernel_cpi" }, { - "BriefDescription": "Uops Per Instruction", - "MetricExpr": "UOPS_RETIRED.RETIRE_SLOTS / INST_RETIRED.ANY", - "MetricGroup": "Pipeline;Ret;Retire", - "MetricName": "UPI" + "BriefDescription": "Fraction of cycles spent in the Operating Sys= tem (OS) Kernel mode", + "MetricExpr": "CPU_CLK_UNHALTED.THREAD_P:k / CPU_CLK_UNHALTED.THRE= AD", + "MetricGroup": "OS", + "MetricName": "tma_info_kernel_utilization", + "MetricThreshold": "tma_info_kernel_utilization > 0.05" }, { - "BriefDescription": "Instruction per taken branch", - "MetricExpr": "UOPS_RETIRED.RETIRE_SLOTS / BR_INST_RETIRED.NEAR_TA= KEN", - "MetricGroup": "Branches;Fed;FetchBW", - "MetricName": "UpTB" + "BriefDescription": "Average per-core data fill bandwidth to the L= 1 data cache [GB / sec]", + "MetricExpr": "64 * L1D.REPLACEMENT / 1e9 / duration_time", + "MetricGroup": "Mem;MemoryBW", + "MetricName": "tma_info_l1d_cache_fill_bw" }, { - "BriefDescription": "Cycles Per Instruction (per Logical Processor= )", - "MetricExpr": "1 / IPC", - "MetricGroup": "Mem;Pipeline", - "MetricName": "CPI" + "BriefDescription": "Average per-thread data fill bandwidth to the= L1 data cache [GB / sec]", + "MetricExpr": "tma_info_l1d_cache_fill_bw", + "MetricGroup": "Mem;MemoryBW", + "MetricName": "tma_info_l1d_cache_fill_bw_1t" }, { - "BriefDescription": "Per-Logical Processor actual clocks when the = Logical Processor is active.", - "MetricExpr": "CPU_CLK_UNHALTED.THREAD", - "MetricGroup": "Pipeline", - "MetricName": "CLKS" + "BriefDescription": "L1 cache true misses per kilo instruction for= retired demand loads", + "MetricExpr": "1e3 * MEM_LOAD_UOPS_RETIRED.L1_MISS / INST_RETIRED.= ANY", + "MetricGroup": "CacheMisses;Mem", + "MetricName": "tma_info_l1mpki" }, { - "BriefDescription": "Total issue-pipeline slots (per-Physical Core= till ICL; per-Logical Processor ICL onward)", - "MetricExpr": "4 * CORE_CLKS", - "MetricGroup": "tma_L1_group", - "MetricName": "SLOTS" + "BriefDescription": "Average per-core data fill bandwidth to the L= 2 cache [GB / sec]", + "MetricExpr": "64 * L2_LINES_IN.ALL / 1e9 / duration_time", + "MetricGroup": "Mem;MemoryBW", + "MetricName": "tma_info_l2_cache_fill_bw" }, { - "BriefDescription": "The ratio of Executed- by Issued-Uops", - "MetricExpr": "UOPS_EXECUTED.THREAD / UOPS_ISSUED.ANY", - "MetricGroup": "Cor;Pipeline", - "MetricName": "Execute_per_Issue", - "PublicDescription": "The ratio of Executed- by Issued-Uops. Ratio= > 1 suggests high rate of uop micro-fusions. Ratio < 1 suggest high rate o= f \"execute\" at rename stage." + "BriefDescription": "Average per-thread data fill bandwidth to the= L2 cache [GB / sec]", + "MetricExpr": "tma_info_l2_cache_fill_bw", + "MetricGroup": "Mem;MemoryBW", + "MetricName": "tma_info_l2_cache_fill_bw_1t" }, { - "BriefDescription": "Instructions Per Cycle across hyper-threads (= per physical core)", - "MetricExpr": "INST_RETIRED.ANY / CORE_CLKS", - "MetricGroup": "Ret;SMT;tma_L1_group", - "MetricName": "CoreIPC" + "BriefDescription": "L2 cache true misses per kilo instruction for= retired demand loads", + "MetricExpr": "1e3 * MEM_LOAD_UOPS_RETIRED.L2_MISS / INST_RETIRED.= ANY", + "MetricGroup": "Backend;CacheMisses;Mem", + "MetricName": "tma_info_l2mpki" }, { - "BriefDescription": "Floating Point Operations Per Cycle", - "MetricExpr": "(FP_COMP_OPS_EXE.SSE_SCALAR_SINGLE + FP_COMP_OPS_EX= E.SSE_SCALAR_DOUBLE + 2 * FP_COMP_OPS_EXE.SSE_PACKED_DOUBLE + 4 * (FP_COMP_= OPS_EXE.SSE_PACKED_SINGLE + SIMD_FP_256.PACKED_DOUBLE) + 8 * SIMD_FP_256.PA= CKED_SINGLE) / CORE_CLKS", - "MetricGroup": "Flops;Ret", - "MetricName": "FLOPc" + "BriefDescription": "Average per-thread data access bandwidth to t= he L3 cache [GB / sec]", + "MetricExpr": "0", + "MetricGroup": "Mem;MemoryBW;Offcore", + "MetricName": "tma_info_l3_cache_access_bw_1t" }, { - "BriefDescription": "Instruction-Level-Parallelism (average number= of uops executed when there is execution) per-core", - "MetricExpr": "UOPS_EXECUTED.THREAD / (cpu@UOPS_EXECUTED.CORE\\,cm= ask\\=3D1@ / 2 if #SMT_on else UOPS_EXECUTED.CYCLES_GE_1_UOP_EXEC)", - "MetricGroup": "Backend;Cor;Pipeline;PortsUtil", - "MetricName": "ILP" + "BriefDescription": "Average per-core data fill bandwidth to the L= 3 cache [GB / sec]", + "MetricExpr": "64 * LONGEST_LAT_CACHE.MISS / 1e9 / duration_time", + "MetricGroup": "Mem;MemoryBW", + "MetricName": "tma_info_l3_cache_fill_bw" }, { - "BriefDescription": "Core actual clocks when any Logical Processor= is active on the Physical Core", - "MetricExpr": "(CPU_CLK_UNHALTED.THREAD / 2 * (1 + CPU_CLK_UNHALTE= D.ONE_THREAD_ACTIVE / CPU_CLK_UNHALTED.REF_XCLK) if #core_wide < 1 else (CP= U_CLK_UNHALTED.THREAD_ANY / 2 if #SMT_on else CLKS))", - "MetricGroup": "SMT", - "MetricName": "CORE_CLKS" + "BriefDescription": "Average per-thread data fill bandwidth to the= L3 cache [GB / sec]", + "MetricExpr": "tma_info_l3_cache_fill_bw", + "MetricGroup": "Mem;MemoryBW", + "MetricName": "tma_info_l3_cache_fill_bw_1t" }, { - "BriefDescription": "Instructions per Load (lower number means hig= her occurrence rate)", - "MetricExpr": "INST_RETIRED.ANY / MEM_UOPS_RETIRED.ALL_LOADS", - "MetricGroup": "InsType", - "MetricName": "IpLoad" + "BriefDescription": "L3 cache true misses per kilo instruction for= retired demand loads", + "MetricExpr": "1e3 * MEM_LOAD_UOPS_RETIRED.LLC_MISS / INST_RETIRED= .ANY", + "MetricGroup": "CacheMisses;Mem", + "MetricName": "tma_info_l3mpki" }, { - "BriefDescription": "Instructions per Store (lower number means hi= gher occurrence rate)", - "MetricExpr": "INST_RETIRED.ANY / MEM_UOPS_RETIRED.ALL_STORES", - "MetricGroup": "InsType", - "MetricName": "IpStore" + "BriefDescription": "Average Latency for L2 cache miss demand Load= s", + "MetricExpr": "OFFCORE_REQUESTS_OUTSTANDING.DEMAND_DATA_RD / OFFCO= RE_REQUESTS.DEMAND_DATA_RD", + "MetricGroup": "Memory_Lat;Offcore", + "MetricName": "tma_info_load_l2_miss_latency" }, { - "BriefDescription": "Instructions per Branch (lower number means h= igher occurrence rate)", - "MetricExpr": "INST_RETIRED.ANY / BR_INST_RETIRED.ALL_BRANCHES", - "MetricGroup": "Branches;Fed;InsType", - "MetricName": "IpBranch" + "BriefDescription": "Average Parallel L2 cache miss demand Loads", + "MetricExpr": "OFFCORE_REQUESTS_OUTSTANDING.DEMAND_DATA_RD / OFFCO= RE_REQUESTS_OUTSTANDING.CYCLES_WITH_DEMAND_DATA_RD", + "MetricGroup": "Memory_BW;Offcore", + "MetricName": "tma_info_load_l2_mlp" }, { - "BriefDescription": "Instructions per (near) call (lower number me= ans higher occurrence rate)", - "MetricExpr": "INST_RETIRED.ANY / BR_INST_RETIRED.NEAR_CALL", - "MetricGroup": "Branches;Fed;PGO", - "MetricName": "IpCall" + "BriefDescription": "Actual Average Latency for L1 data-cache miss= demand load operations (in core cycles)", + "MetricConstraint": "NO_GROUP_EVENTS", + "MetricExpr": "L1D_PEND_MISS.PENDING / (MEM_LOAD_UOPS_RETIRED.L1_M= ISS + MEM_LOAD_UOPS_RETIRED.HIT_LFB)", + "MetricGroup": "Mem;MemoryBound;MemoryLat", + "MetricName": "tma_info_load_miss_real_latency" }, { - "BriefDescription": "Instruction per taken branch", - "MetricExpr": "INST_RETIRED.ANY / BR_INST_RETIRED.NEAR_TAKEN", - "MetricGroup": "Branches;Fed;FetchBW;Frontend;PGO", - "MetricName": "IpTB" + "BriefDescription": "Average number of parallel data read requests= to external memory", + "MetricExpr": "UNC_C_TOR_OCCUPANCY.MISS_OPCODE@filter_opc\\=3D0x18= 2@ / UNC_C_TOR_OCCUPANCY.MISS_OPCODE@filter_opc\\=3D0x182\\,thresh\\=3D1@", + "MetricGroup": "Mem;MemoryBW;SoC", + "MetricName": "tma_info_mem_parallel_reads", + "PublicDescription": "Average number of parallel data read request= s to external memory. Accounts for demand loads and L1/L2 prefetches" }, { - "BriefDescription": "Branch instructions per taken branch. ", - "MetricExpr": "BR_INST_RETIRED.ALL_BRANCHES / BR_INST_RETIRED.NEAR= _TAKEN", - "MetricGroup": "Branches;Fed;PGO", - "MetricName": "BpTkBranch" + "BriefDescription": "Average latency of data read request to exter= nal memory (in nanoseconds)", + "MetricExpr": "1e9 * (UNC_C_TOR_OCCUPANCY.MISS_OPCODE@filter_opc\\= =3D0x182@ / UNC_C_TOR_INSERTS.MISS_OPCODE@filter_opc\\=3D0x182@) / (tma_inf= o_socket_clks / duration_time)", + "MetricGroup": "Mem;MemoryLat;SoC", + "MetricName": "tma_info_mem_read_latency", + "PublicDescription": "Average latency of data read request to exte= rnal memory (in nanoseconds). Accounts for demand loads and L1/L2 prefetche= s. ([RKL+]memory-controller only)" }, { - "BriefDescription": "Instructions per FP Arithmetic instruction (l= ower number means higher occurrence rate)", - "MetricExpr": "1 / (tma_fp_scalar + tma_fp_vector)", - "MetricGroup": "Flops;InsType", - "MetricName": "IpArith", - "PublicDescription": "Instructions per FP Arithmetic instruction (= lower number means higher occurrence rate). May undercount due to FMA doubl= e counting. Approximated prior to BDW." + "BriefDescription": "Memory-Level-Parallelism (average number of L= 1 miss demand load when there is at least one such miss", + "MetricConstraint": "NO_GROUP_EVENTS", + "MetricExpr": "L1D_PEND_MISS.PENDING / L1D_PEND_MISS.PENDING_CYCLE= S", + "MetricGroup": "Mem;MemoryBW;MemoryBound", + "MetricName": "tma_info_mlp", + "PublicDescription": "Memory-Level-Parallelism (average number of = L1 miss demand load when there is at least one such miss. Per-Logical Proce= ssor)" }, { - "BriefDescription": "Total number of retired Instructions Sample w= ith: INST_RETIRED.PREC_DIST", - "MetricExpr": "INST_RETIRED.ANY", - "MetricGroup": "Summary;tma_L1_group", - "MetricName": "Instructions" + "BriefDescription": "Utilization of the core's Page Walker(s) serv= ing STLB misses triggered by instruction/Load/Store accesses", + "MetricExpr": "(ITLB_MISSES.WALK_DURATION + DTLB_LOAD_MISSES.WALK_= DURATION + DTLB_STORE_MISSES.WALK_DURATION) / tma_info_core_clks", + "MetricGroup": "Mem;MemoryTLB", + "MetricName": "tma_info_page_walks_utilization", + "MetricThreshold": "tma_info_page_walks_utilization > 0.5" }, { "BriefDescription": "Average number of Uops retired in cycles wher= e at least one uop has retired.", "MetricExpr": "UOPS_RETIRED.RETIRE_SLOTS / cpu@UOPS_RETIRED.RETIRE= _SLOTS\\,cmask\\=3D1@", "MetricGroup": "Pipeline;Ret", - "MetricName": "Retire" + "MetricName": "tma_info_retire" }, { - "BriefDescription": "", - "MetricExpr": "UOPS_EXECUTED.THREAD / cpu@UOPS_EXECUTED.THREAD\\,c= mask\\=3D1@", - "MetricGroup": "Cor;Pipeline;PortsUtil;SMT", - "MetricName": "Execute" + "BriefDescription": "Total issue-pipeline slots (per-Physical Core= till ICL; per-Logical Processor ICL onward)", + "MetricExpr": "4 * tma_info_core_clks", + "MetricGroup": "TmaL1;tma_L1_group", + "MetricName": "tma_info_slots" }, { - "BriefDescription": "Fraction of Uops delivered by the DSB (aka De= coded ICache; or Uop Cache)", - "MetricExpr": "IDQ.DSB_UOPS / (IDQ.DSB_UOPS + LSD.UOPS + IDQ.MITE_= UOPS + IDQ.MS_UOPS)", - "MetricGroup": "DSB;Fed;FetchBW", - "MetricName": "DSB_Coverage" + "BriefDescription": "Fraction of cycles where both hardware Logica= l Processors were active", + "MetricExpr": "(1 - CPU_CLK_UNHALTED.ONE_THREAD_ACTIVE / (CPU_CLK_= UNHALTED.REF_XCLK_ANY / 2) if #SMT_on else 0)", + "MetricGroup": "SMT", + "MetricName": "tma_info_smt_2t_utilization" }, { - "BriefDescription": "Number of Instructions per non-speculative Br= anch Misprediction (JEClear) (lower number means higher occurrence rate)", - "MetricExpr": "INST_RETIRED.ANY / BR_MISP_RETIRED.ALL_BRANCHES", - "MetricGroup": "Bad;BadSpec;BrMispredicts", - "MetricName": "IpMispredict" + "BriefDescription": "Socket actual clocks when any core is active = on that socket", + "MetricExpr": "cbox_0@event\\=3D0x0@", + "MetricGroup": "SoC", + "MetricName": "tma_info_socket_clks" }, { - "BriefDescription": "Actual Average Latency for L1 data-cache miss= demand load operations (in core cycles)", - "MetricExpr": "L1D_PEND_MISS.PENDING / (MEM_LOAD_UOPS_RETIRED.L1_M= ISS + MEM_LOAD_UOPS_RETIRED.HIT_LFB)", - "MetricGroup": "Mem;MemoryBound;MemoryLat", - "MetricName": "Load_Miss_Real_Latency" + "BriefDescription": "Average Frequency Utilization relative nomina= l frequency", + "MetricExpr": "tma_info_clks / CPU_CLK_UNHALTED.REF_TSC", + "MetricGroup": "Power", + "MetricName": "tma_info_turbo_utilization" }, { - "BriefDescription": "Memory-Level-Parallelism (average number of L= 1 miss demand load when there is at least one such miss. Per-Logical Proces= sor)", - "MetricExpr": "L1D_PEND_MISS.PENDING / L1D_PEND_MISS.PENDING_CYCLE= S", - "MetricGroup": "Mem;MemoryBW;MemoryBound", - "MetricName": "MLP" + "BriefDescription": "Uops Per Instruction", + "MetricExpr": "UOPS_RETIRED.RETIRE_SLOTS / INST_RETIRED.ANY", + "MetricGroup": "Pipeline;Ret;Retire", + "MetricName": "tma_info_uoppi", + "MetricThreshold": "tma_info_uoppi > 1.05" }, { - "BriefDescription": "L1 cache true misses per kilo instruction for= retired demand loads", - "MetricExpr": "1e3 * MEM_LOAD_UOPS_RETIRED.L1_MISS / INST_RETIRED.= ANY", - "MetricGroup": "CacheMisses;Mem", - "MetricName": "L1MPKI" + "BriefDescription": "Instruction per taken branch", + "MetricExpr": "UOPS_RETIRED.RETIRE_SLOTS / BR_INST_RETIRED.NEAR_TA= KEN", + "MetricGroup": "Branches;Fed;FetchBW", + "MetricName": "tma_info_uptb", + "MetricThreshold": "tma_info_uptb < 6" }, { - "BriefDescription": "L2 cache true misses per kilo instruction for= retired demand loads", - "MetricExpr": "1e3 * MEM_LOAD_UOPS_RETIRED.L2_MISS / INST_RETIRED.= ANY", - "MetricGroup": "Backend;CacheMisses;Mem", - "MetricName": "L2MPKI" + "BriefDescription": "This metric represents fraction of cycles the= CPU was stalled due to Instruction TLB (ITLB) misses", + "MetricExpr": "(12 * ITLB_MISSES.STLB_HIT + ITLB_MISSES.WALK_DURAT= ION) / tma_info_clks", + "MetricGroup": "BigFoot;FetchLat;MemoryTLB;TopdownL3;tma_L3_group;= tma_fetch_latency_group", + "MetricName": "tma_itlb_misses", + "MetricThreshold": "tma_itlb_misses > 0.05 & (tma_fetch_latency > = 0.1 & tma_frontend_bound > 0.15)", + "PublicDescription": "This metric represents fraction of cycles th= e CPU was stalled due to Instruction TLB (ITLB) misses. Sample with: ITLB_M= ISSES.WALK_COMPLETED", + "ScaleUnit": "100%" }, { - "BriefDescription": "L3 cache true misses per kilo instruction for= retired demand loads", - "MetricExpr": "1e3 * MEM_LOAD_UOPS_RETIRED.LLC_MISS / INST_RETIRED= .ANY", - "MetricGroup": "CacheMisses;Mem", - "MetricName": "L3MPKI" + "BriefDescription": "This metric estimates how often the CPU was s= talled without loads missing the L1 data cache", + "MetricExpr": "max((min(CPU_CLK_UNHALTED.THREAD, CYCLE_ACTIVITY.ST= ALLS_LDM_PENDING) - CYCLE_ACTIVITY.STALLS_L1D_PENDING) / tma_info_clks, 0)"= , + "MetricGroup": "CacheMisses;MemoryBound;TmaL3mem;TopdownL3;tma_L3_= group;tma_issueL1;tma_issueMC;tma_memory_bound_group", + "MetricName": "tma_l1_bound", + "MetricThreshold": "tma_l1_bound > 0.1 & (tma_memory_bound > 0.2 &= tma_backend_bound > 0.2)", + "PublicDescription": "This metric estimates how often the CPU was = stalled without loads missing the L1 data cache. The L1 data cache typical= ly has the shortest latency. However; in certain cases like loads blocked = on older stores; a load might suffer due to high latency even though it is = being satisfied by the L1. Another example is loads who miss in the TLB. Th= ese cases are characterized by execution unit stalls; while some non-comple= ted demand load lives in the machine without having that demand load missin= g the L1 cache. Sample with: MEM_LOAD_UOPS_RETIRED.L1_HIT_PS;MEM_LOAD_UOPS_= RETIRED.HIT_LFB_PS. Related metrics: tma_clears_resteers, tma_machine_clear= s, tma_microcode_sequencer, tma_ms_switches, tma_ports_utilized_1", + "ScaleUnit": "100%" }, { - "BriefDescription": "Utilization of the core's Page Walker(s) serv= ing STLB misses triggered by instruction/Load/Store accesses", - "MetricConstraint": "NO_NMI_WATCHDOG", - "MetricExpr": "(ITLB_MISSES.WALK_DURATION + DTLB_LOAD_MISSES.WALK_= DURATION + DTLB_STORE_MISSES.WALK_DURATION) / CORE_CLKS", - "MetricGroup": "Mem;MemoryTLB", - "MetricName": "Page_Walks_Utilization" + "BriefDescription": "This metric estimates how often the CPU was s= talled due to L2 cache accesses by loads", + "MetricExpr": "(CYCLE_ACTIVITY.STALLS_L1D_PENDING - CYCLE_ACTIVITY= .STALLS_L2_PENDING) / tma_info_clks", + "MetricGroup": "CacheMisses;MemoryBound;TmaL3mem;TopdownL3;tma_L3_= group;tma_memory_bound_group", + "MetricName": "tma_l2_bound", + "MetricThreshold": "tma_l2_bound > 0.05 & (tma_memory_bound > 0.2 = & tma_backend_bound > 0.2)", + "PublicDescription": "This metric estimates how often the CPU was = stalled due to L2 cache accesses by loads. Avoiding cache misses (i.e. L1 = misses/L2 hits) can improve the latency and increase performance. Sample wi= th: MEM_LOAD_UOPS_RETIRED.L2_HIT_PS", + "ScaleUnit": "100%" }, { - "BriefDescription": "Average per-core data fill bandwidth to the L= 1 data cache [GB / sec]", - "MetricExpr": "64 * L1D.REPLACEMENT / 1e9 / duration_time", - "MetricGroup": "Mem;MemoryBW", - "MetricName": "L1D_Cache_Fill_BW" + "BriefDescription": "This metric estimates how often the CPU was s= talled due to loads accesses to L3 cache or contended with a sibling Core", + "MetricConstraint": "NO_GROUP_EVENTS_SMT", + "MetricExpr": "MEM_LOAD_UOPS_RETIRED.LLC_HIT / (MEM_LOAD_UOPS_RETI= RED.LLC_HIT + 7 * MEM_LOAD_UOPS_RETIRED.LLC_MISS) * CYCLE_ACTIVITY.STALLS_L= 2_PENDING / tma_info_clks", + "MetricGroup": "CacheMisses;MemoryBound;TmaL3mem;TopdownL3;tma_L3_= group;tma_memory_bound_group", + "MetricName": "tma_l3_bound", + "MetricThreshold": "tma_l3_bound > 0.05 & (tma_memory_bound > 0.2 = & tma_backend_bound > 0.2)", + "PublicDescription": "This metric estimates how often the CPU was = stalled due to loads accesses to L3 cache or contended with a sibling Core.= Avoiding cache misses (i.e. L2 misses/L3 hits) can improve the latency an= d increase performance. Sample with: MEM_LOAD_UOPS_RETIRED.L3_HIT_PS", + "ScaleUnit": "100%" }, { - "BriefDescription": "Average per-core data fill bandwidth to the L= 2 cache [GB / sec]", - "MetricExpr": "64 * L2_LINES_IN.ALL / 1e9 / duration_time", - "MetricGroup": "Mem;MemoryBW", - "MetricName": "L2_Cache_Fill_BW" + "BriefDescription": "This metric represents fraction of cycles wit= h demand load accesses that hit the L3 cache under unloaded scenarios (poss= ibly L3 latency limited)", + "MetricConstraint": "NO_GROUP_EVENTS", + "MetricExpr": "41 * (MEM_LOAD_UOPS_RETIRED.LLC_HIT * (1 + MEM_LOAD= _UOPS_RETIRED.HIT_LFB / (MEM_LOAD_UOPS_RETIRED.L2_HIT + MEM_LOAD_UOPS_RETIR= ED.LLC_HIT + MEM_LOAD_UOPS_LLC_HIT_RETIRED.XSNP_HIT + MEM_LOAD_UOPS_LLC_HIT= _RETIRED.XSNP_HITM + MEM_LOAD_UOPS_LLC_HIT_RETIRED.XSNP_MISS + MEM_LOAD_UOP= S_LLC_MISS_RETIRED.LOCAL_DRAM + MEM_LOAD_UOPS_LLC_MISS_RETIRED.REMOTE_DRAM = + MEM_LOAD_UOPS_LLC_MISS_RETIRED.REMOTE_HITM + MEM_LOAD_UOPS_LLC_MISS_RETIR= ED.REMOTE_FWD))) / tma_info_clks", + "MetricGroup": "MemoryLat;TopdownL4;tma_L4_group;tma_issueLat;tma_= l3_bound_group", + "MetricName": "tma_l3_hit_latency", + "MetricThreshold": "tma_l3_hit_latency > 0.1 & (tma_l3_bound > 0.0= 5 & (tma_memory_bound > 0.2 & tma_backend_bound > 0.2))", + "PublicDescription": "This metric represents fraction of cycles wi= th demand load accesses that hit the L3 cache under unloaded scenarios (pos= sibly L3 latency limited). Avoiding private cache misses (i.e. L2 misses/L= 3 hits) will improve the latency; reduce contention with sibling physical c= ores and increase performance. Note the value of this node may overlap wit= h its siblings. Sample with: MEM_LOAD_UOPS_RETIRED.L3_HIT_PS. Related metri= cs: tma_mem_latency", + "ScaleUnit": "100%" }, { - "BriefDescription": "Average per-core data fill bandwidth to the L= 3 cache [GB / sec]", - "MetricExpr": "64 * LONGEST_LAT_CACHE.MISS / 1e9 / duration_time", - "MetricGroup": "Mem;MemoryBW", - "MetricName": "L3_Cache_Fill_BW" + "BriefDescription": "This metric represents fraction of cycles CPU= was stalled due to Length Changing Prefixes (LCPs)", + "MetricExpr": "ILD_STALL.LCP / tma_info_clks", + "MetricGroup": "FetchLat;TopdownL3;tma_L3_group;tma_fetch_latency_= group;tma_issueFB", + "MetricName": "tma_lcp", + "MetricThreshold": "tma_lcp > 0.05 & (tma_fetch_latency > 0.1 & tm= a_frontend_bound > 0.15)", + "PublicDescription": "This metric represents fraction of cycles CP= U was stalled due to Length Changing Prefixes (LCPs). Using proper compiler= flags or Intel Compiler by default will certainly avoid this. #Link: Optim= ization Guide about LCP BKMs. Related metrics: tma_dsb_switches, tma_fetch_= bandwidth, tma_info_dsb_coverage, tma_info_iptb", + "ScaleUnit": "100%" }, { - "BriefDescription": "Average per-thread data fill bandwidth to the= L1 data cache [GB / sec]", - "MetricExpr": "L1D_Cache_Fill_BW", - "MetricGroup": "Mem;MemoryBW", - "MetricName": "L1D_Cache_Fill_BW_1T" + "BriefDescription": "This metric represents fraction of slots wher= e the CPU was retiring light-weight operations -- instructions that require= no more than one uop (micro-operation)", + "MetricExpr": "tma_retiring - tma_heavy_operations", + "MetricGroup": "Retire;TmaL2;TopdownL2;tma_L2_group;tma_retiring_g= roup", + "MetricName": "tma_light_operations", + "MetricThreshold": "tma_light_operations > 0.6", + "PublicDescription": "This metric represents fraction of slots whe= re the CPU was retiring light-weight operations -- instructions that requir= e no more than one uop (micro-operation). This correlates with total number= of instructions used by the program. A uops-per-instruction (see UopPI met= ric) ratio of 1 or less should be expected for decently optimized software = running on Intel Core/Xeon products. While this often indicates efficient X= 86 instructions were executed; high value does not necessarily mean better = performance cannot be achieved. Sample with: INST_RETIRED.PREC_DIST", + "ScaleUnit": "100%" }, { - "BriefDescription": "Average per-thread data fill bandwidth to the= L2 cache [GB / sec]", - "MetricExpr": "L2_Cache_Fill_BW", - "MetricGroup": "Mem;MemoryBW", - "MetricName": "L2_Cache_Fill_BW_1T" + "BriefDescription": "This metric represents Core fraction of cycle= s CPU dispatched uops on execution port for Load operations", + "MetricConstraint": "NO_GROUP_EVENTS_NMI", + "MetricExpr": "(UOPS_DISPATCHED_PORT.PORT_2 + UOPS_DISPATCHED_PORT= .PORT_3 - UOPS_DISPATCHED_PORT.PORT_4) / (2 * tma_info_core_clks)", + "MetricGroup": "TopdownL5;tma_L5_group;tma_ports_utilized_3m_group= ", + "MetricName": "tma_load_op_utilization", + "MetricThreshold": "tma_load_op_utilization > 0.6", + "PublicDescription": "This metric represents Core fraction of cycl= es CPU dispatched uops on execution port for Load operations. Sample with: = UOPS_DISPATCHED.PORT_2_3", + "ScaleUnit": "100%" }, { - "BriefDescription": "Average per-thread data fill bandwidth to the= L3 cache [GB / sec]", - "MetricExpr": "L3_Cache_Fill_BW", - "MetricGroup": "Mem;MemoryBW", - "MetricName": "L3_Cache_Fill_BW_1T" + "BriefDescription": "This metric estimates fraction of cycles whil= e the memory subsystem was handling loads from local memory", + "MetricConstraint": "NO_GROUP_EVENTS", + "MetricExpr": "200 * (MEM_LOAD_UOPS_LLC_MISS_RETIRED.LOCAL_DRAM * = (1 + MEM_LOAD_UOPS_RETIRED.HIT_LFB / (MEM_LOAD_UOPS_RETIRED.L2_HIT + MEM_LO= AD_UOPS_RETIRED.LLC_HIT + MEM_LOAD_UOPS_LLC_HIT_RETIRED.XSNP_HIT + MEM_LOAD= _UOPS_LLC_HIT_RETIRED.XSNP_HITM + MEM_LOAD_UOPS_LLC_HIT_RETIRED.XSNP_MISS += MEM_LOAD_UOPS_LLC_MISS_RETIRED.LOCAL_DRAM + MEM_LOAD_UOPS_LLC_MISS_RETIRED= .REMOTE_DRAM + MEM_LOAD_UOPS_LLC_MISS_RETIRED.REMOTE_HITM + MEM_LOAD_UOPS_L= LC_MISS_RETIRED.REMOTE_FWD))) / tma_info_clks", + "MetricGroup": "Server;TopdownL5;tma_L5_group;tma_mem_latency_grou= p", + "MetricName": "tma_local_dram", + "MetricThreshold": "tma_local_dram > 0.1 & (tma_mem_latency > 0.1 = & (tma_dram_bound > 0.1 & (tma_memory_bound > 0.2 & tma_backend_bound > 0.2= )))", + "PublicDescription": "This metric estimates fraction of cycles whi= le the memory subsystem was handling loads from local memory. Caching will = improve the latency and increase performance. Sample with: MEM_LOAD_UOPS_L3= _MISS_RETIRED.LOCAL_DRAM_PS", + "ScaleUnit": "100%" }, { - "BriefDescription": "Average per-thread data access bandwidth to t= he L3 cache [GB / sec]", - "MetricExpr": "0", - "MetricGroup": "Mem;MemoryBW;Offcore", - "MetricName": "L3_Cache_Access_BW_1T" + "BriefDescription": "This metric represents fraction of cycles the= CPU spent handling cache misses due to lock operations", + "MetricConstraint": "NO_GROUP_EVENTS", + "MetricExpr": "MEM_UOPS_RETIRED.LOCK_LOADS / MEM_UOPS_RETIRED.ALL_= STORES * min(CPU_CLK_UNHALTED.THREAD, OFFCORE_REQUESTS_OUTSTANDING.CYCLES_W= ITH_DEMAND_RFO) / tma_info_clks", + "MetricGroup": "Offcore;TopdownL4;tma_L4_group;tma_issueRFO;tma_l1= _bound_group", + "MetricName": "tma_lock_latency", + "MetricThreshold": "tma_lock_latency > 0.2 & (tma_l1_bound > 0.1 &= (tma_memory_bound > 0.2 & tma_backend_bound > 0.2))", + "PublicDescription": "This metric represents fraction of cycles th= e CPU spent handling cache misses due to lock operations. Due to the microa= rchitecture handling of locks; they are classified as L1_Bound regardless o= f what memory source satisfied them. Sample with: MEM_UOPS_RETIRED.LOCK_LOA= DS_PS. Related metrics: tma_store_latency", + "ScaleUnit": "100%" }, { - "BriefDescription": "Average CPU Utilization", - "MetricExpr": "CPU_CLK_UNHALTED.REF_TSC / TSC", - "MetricGroup": "HPC;Summary", - "MetricName": "CPU_Utilization" + "BriefDescription": "This metric represents fraction of slots the = CPU has wasted due to Machine Clears", + "MetricConstraint": "NO_GROUP_EVENTS", + "MetricExpr": "tma_bad_speculation - tma_branch_mispredicts", + "MetricGroup": "BadSpec;MachineClears;TmaL2;TopdownL2;tma_L2_group= ;tma_bad_speculation_group;tma_issueMC;tma_issueSyncxn", + "MetricName": "tma_machine_clears", + "MetricThreshold": "tma_machine_clears > 0.1 & tma_bad_speculation= > 0.15", + "PublicDescription": "This metric represents fraction of slots the= CPU has wasted due to Machine Clears. These slots are either wasted by uo= ps fetched prior to the clear; or stalls the out-of-order portion of the ma= chine needs to recover its state after the clear. For example; this can hap= pen due to memory ordering Nukes (e.g. Memory Disambiguation) or Self-Modif= ying-Code (SMC) nukes. Sample with: MACHINE_CLEARS.COUNT. Related metrics: = tma_clears_resteers, tma_contested_accesses, tma_data_sharing, tma_false_sh= aring, tma_l1_bound, tma_microcode_sequencer, tma_ms_switches, tma_remote_c= ache", + "ScaleUnit": "100%" }, { - "BriefDescription": "Measured Average Frequency for unhalted proce= ssors [GHz]", - "MetricExpr": "Turbo_Utilization * TSC / 1e9 / duration_time", - "MetricGroup": "Power;Summary", - "MetricName": "Average_Frequency" + "BriefDescription": "This metric estimates fraction of cycles wher= e the core's performance was likely hurt due to approaching bandwidth limit= s of external memory (DRAM)", + "MetricExpr": "min(CPU_CLK_UNHALTED.THREAD, cpu@OFFCORE_REQUESTS_O= UTSTANDING.ALL_DATA_RD\\,cmask\\=3D6@) / tma_info_clks", + "MetricGroup": "MemoryBW;Offcore;TopdownL4;tma_L4_group;tma_dram_b= ound_group;tma_issueBW", + "MetricName": "tma_mem_bandwidth", + "MetricThreshold": "tma_mem_bandwidth > 0.2 & (tma_dram_bound > 0.= 1 & (tma_memory_bound > 0.2 & tma_backend_bound > 0.2))", + "PublicDescription": "This metric estimates fraction of cycles whe= re the core's performance was likely hurt due to approaching bandwidth limi= ts of external memory (DRAM). The underlying heuristic assumes that a simi= lar off-core traffic is generated by all IA cores. This metric does not agg= regate non-data-read requests by this logical processor; requests from othe= r IA Logical Processors/Physical Cores/sockets; or other non-IA devices lik= e GPU; hence the maximum external memory bandwidth limits may or may not be= approached when this metric is flagged (see Uncore counters for that). Rel= ated metrics: tma_fb_full, tma_info_dram_bw_use, tma_sq_full", + "ScaleUnit": "100%" }, { - "BriefDescription": "Giga Floating Point Operations Per Second", - "MetricExpr": "(FP_COMP_OPS_EXE.SSE_SCALAR_SINGLE + FP_COMP_OPS_EX= E.SSE_SCALAR_DOUBLE + 2 * FP_COMP_OPS_EXE.SSE_PACKED_DOUBLE + 4 * (FP_COMP_= OPS_EXE.SSE_PACKED_SINGLE + SIMD_FP_256.PACKED_DOUBLE) + 8 * SIMD_FP_256.PA= CKED_SINGLE) / 1e9 / duration_time", - "MetricGroup": "Cor;Flops;HPC", - "MetricName": "GFLOPs", - "PublicDescription": "Giga Floating Point Operations Per Second. A= ggregate across all supported options of: FP precisions, scalar and vector = instructions, vector-width and AMX engine." + "BriefDescription": "This metric estimates fraction of cycles wher= e the performance was likely hurt due to latency from external memory (DRAM= )", + "MetricExpr": "min(CPU_CLK_UNHALTED.THREAD, OFFCORE_REQUESTS_OUTST= ANDING.CYCLES_WITH_DATA_RD) / tma_info_clks - tma_mem_bandwidth", + "MetricGroup": "MemoryLat;Offcore;TopdownL4;tma_L4_group;tma_dram_= bound_group;tma_issueLat", + "MetricName": "tma_mem_latency", + "MetricThreshold": "tma_mem_latency > 0.1 & (tma_dram_bound > 0.1 = & (tma_memory_bound > 0.2 & tma_backend_bound > 0.2))", + "PublicDescription": "This metric estimates fraction of cycles whe= re the performance was likely hurt due to latency from external memory (DRA= M). This metric does not aggregate requests from other Logical Processors/= Physical Cores/sockets (see Uncore counters for that). Related metrics: tma= _l3_hit_latency", + "ScaleUnit": "100%" }, { - "BriefDescription": "Average Frequency Utilization relative nomina= l frequency", - "MetricExpr": "CLKS / CPU_CLK_UNHALTED.REF_TSC", - "MetricGroup": "Power", - "MetricName": "Turbo_Utilization" + "BriefDescription": "This metric represents fraction of slots the = Memory subsystem within the Backend was a bottleneck", + "MetricConstraint": "NO_GROUP_EVENTS", + "MetricExpr": "(min(CPU_CLK_UNHALTED.THREAD, CYCLE_ACTIVITY.STALLS= _LDM_PENDING) + RESOURCE_STALLS.SB) / (min(CPU_CLK_UNHALTED.THREAD, CYCLE_A= CTIVITY.CYCLES_NO_EXECUTE) + UOPS_EXECUTED.CYCLES_GE_1_UOP_EXEC - (UOPS_EXE= CUTED.CYCLES_GE_3_UOPS_EXEC if tma_info_ipc > 1.8 else UOPS_EXECUTED.CYCLES= _GE_2_UOPS_EXEC) - (RS_EVENTS.EMPTY_CYCLES if tma_fetch_latency > 0.1 else = 0) + RESOURCE_STALLS.SB) * tma_backend_bound", + "MetricGroup": "Backend;TmaL2;TopdownL2;tma_L2_group;tma_backend_b= ound_group", + "MetricName": "tma_memory_bound", + "MetricThreshold": "tma_memory_bound > 0.2 & tma_backend_bound > 0= .2", + "PublicDescription": "This metric represents fraction of slots the= Memory subsystem within the Backend was a bottleneck. Memory Bound estima= tes fraction of slots where pipeline is likely stalled due to demand load o= r store instructions. This accounts mainly for (1) non-completed in-flight = memory demand loads which coincides with execution units starvation; in add= ition to (2) cases where stores could impose backpressure on the pipeline w= hen many of them get buffered at the same time (less common out of the two)= .", + "ScaleUnit": "100%" }, { - "BriefDescription": "Fraction of cycles where both hardware Logica= l Processors were active", - "MetricExpr": "(1 - CPU_CLK_UNHALTED.ONE_THREAD_ACTIVE / (CPU_CLK_= UNHALTED.REF_XCLK_ANY / 2) if #SMT_on else 0)", - "MetricGroup": "SMT", - "MetricName": "SMT_2T_Utilization" + "BriefDescription": "This metric represents fraction of slots the = CPU was retiring uops fetched by the Microcode Sequencer (MS) unit", + "MetricExpr": "UOPS_RETIRED.RETIRE_SLOTS / UOPS_ISSUED.ANY * IDQ.M= S_UOPS / tma_info_slots", + "MetricGroup": "MicroSeq;TopdownL3;tma_L3_group;tma_heavy_operatio= ns_group;tma_issueMC;tma_issueMS", + "MetricName": "tma_microcode_sequencer", + "MetricThreshold": "tma_microcode_sequencer > 0.05 & tma_heavy_ope= rations > 0.1", + "PublicDescription": "This metric represents fraction of slots the= CPU was retiring uops fetched by the Microcode Sequencer (MS) unit. The M= S is used for CISC instructions not supported by the default decoders (like= repeat move strings; or CPUID); or by microcode assists used to address so= me operation modes (like in Floating Point assists). These cases can often = be avoided. Sample with: IDQ.MS_UOPS. Related metrics: tma_clears_resteers,= tma_l1_bound, tma_machine_clears, tma_ms_switches", + "ScaleUnit": "100%" }, { - "BriefDescription": "Fraction of cycles spent in the Operating Sys= tem (OS) Kernel mode", - "MetricExpr": "CPU_CLK_UNHALTED.THREAD_P:k / CPU_CLK_UNHALTED.THRE= AD", - "MetricGroup": "OS", - "MetricName": "Kernel_Utilization" + "BriefDescription": "This metric represents Core fraction of cycle= s in which CPU was likely limited due to the MITE pipeline (the legacy deco= de pipeline)", + "MetricExpr": "(IDQ.ALL_MITE_CYCLES_ANY_UOPS - IDQ.ALL_MITE_CYCLES= _4_UOPS) / tma_info_core_clks / 2", + "MetricGroup": "DSBmiss;FetchBW;TopdownL3;tma_L3_group;tma_fetch_b= andwidth_group", + "MetricName": "tma_mite", + "MetricThreshold": "tma_mite > 0.1 & (tma_fetch_bandwidth > 0.1 & = tma_frontend_bound > 0.15 & tma_info_ipc / 4 > 0.35)", + "PublicDescription": "This metric represents Core fraction of cycl= es in which CPU was likely limited due to the MITE pipeline (the legacy dec= ode pipeline). This pipeline is used for code that was not pre-cached in th= e DSB or LSD. For example; inefficiencies due to asymmetric decoders; use o= f long immediate or LCP can manifest as MITE fetch bandwidth bottleneck.", + "ScaleUnit": "100%" }, { - "BriefDescription": "Cycles Per Instruction for the Operating Syst= em (OS) Kernel mode", - "MetricExpr": "CPU_CLK_UNHALTED.THREAD_P:k / INST_RETIRED.ANY_P:k"= , - "MetricGroup": "OS", - "MetricName": "Kernel_CPI" + "BriefDescription": "This metric estimates the fraction of cycles = when the CPU was stalled due to switches of uop delivery to the Microcode S= equencer (MS)", + "MetricExpr": "3 * IDQ.MS_SWITCHES / tma_info_clks", + "MetricGroup": "FetchLat;MicroSeq;TopdownL3;tma_L3_group;tma_fetch= _latency_group;tma_issueMC;tma_issueMS;tma_issueMV;tma_issueSO", + "MetricName": "tma_ms_switches", + "MetricThreshold": "tma_ms_switches > 0.05 & (tma_fetch_latency > = 0.1 & tma_frontend_bound > 0.15)", + "PublicDescription": "This metric estimates the fraction of cycles= when the CPU was stalled due to switches of uop delivery to the Microcode = Sequencer (MS). Commonly used instructions are optimized for delivery by th= e DSB (decoded i-cache) or MITE (legacy instruction decode) pipelines. Cert= ain operations cannot be handled natively by the execution pipeline; and mu= st be performed by microcode (small programs injected into the execution st= ream). Switching to the MS too often can negatively impact performance. The= MS is designated to deliver long uop flows required by CISC instructions l= ike CPUID; or uncommon conditions like Floating Point Assists when dealing = with Denormals. Sample with: IDQ.MS_SWITCHES. Related metrics: tma_clears_r= esteers, tma_l1_bound, tma_machine_clears, tma_microcode_sequencer, tma_mix= ing_vectors, tma_serializing_operation", + "ScaleUnit": "100%" }, { - "BriefDescription": "Average external Memory Bandwidth Use for rea= ds and writes [GB / sec]", - "MetricExpr": "64 * (UNC_M_CAS_COUNT.RD + UNC_M_CAS_COUNT.WR) / 1e= 9 / duration_time", - "MetricGroup": "HPC;Mem;MemoryBW;SoC", - "MetricName": "DRAM_BW_Use" + "BriefDescription": "This metric represents Core fraction of cycle= s CPU dispatched uops on execution port 0 ([SNB+] ALU; [HSW+] ALU and 2nd b= ranch)", + "MetricExpr": "UOPS_DISPATCHED_PORT.PORT_0 / tma_info_core_clks", + "MetricGroup": "Compute;TopdownL6;tma_L6_group;tma_alu_op_utilizat= ion_group;tma_issue2P", + "MetricName": "tma_port_0", + "MetricThreshold": "tma_port_0 > 0.6", + "PublicDescription": "This metric represents Core fraction of cycl= es CPU dispatched uops on execution port 0 ([SNB+] ALU; [HSW+] ALU and 2nd = branch). Sample with: UOPS_DISPATCHED_PORT.PORT_0. Related metrics: tma_fp_= scalar, tma_fp_vector, tma_fp_vector_512b, tma_port_1, tma_port_5, tma_port= _6, tma_ports_utilized_2", + "ScaleUnit": "100%" }, { - "BriefDescription": "Average latency of data read request to exter= nal memory (in nanoseconds). Accounts for demand loads and L1/L2 prefetches= ", - "MetricExpr": "1e9 * (UNC_C_TOR_OCCUPANCY.MISS_OPCODE@filter_opc\\= =3D0x182@ / UNC_C_TOR_INSERTS.MISS_OPCODE@filter_opc\\=3D0x182@) / (Socket_= CLKS / duration_time)", - "MetricGroup": "Mem;MemoryLat;SoC", - "MetricName": "MEM_Read_Latency" + "BriefDescription": "This metric represents Core fraction of cycle= s CPU dispatched uops on execution port 1 (ALU)", + "MetricExpr": "UOPS_DISPATCHED_PORT.PORT_1 / tma_info_core_clks", + "MetricGroup": "TopdownL6;tma_L6_group;tma_alu_op_utilization_grou= p;tma_issue2P", + "MetricName": "tma_port_1", + "MetricThreshold": "tma_port_1 > 0.6", + "PublicDescription": "This metric represents Core fraction of cycl= es CPU dispatched uops on execution port 1 (ALU). Sample with: UOPS_DISPATC= HED_PORT.PORT_1. Related metrics: tma_fp_scalar, tma_fp_vector, tma_fp_vect= or_512b, tma_port_0, tma_port_5, tma_port_6, tma_ports_utilized_2", + "ScaleUnit": "100%" }, { - "BriefDescription": "Average number of parallel data read requests= to external memory. Accounts for demand loads and L1/L2 prefetches", - "MetricExpr": "UNC_C_TOR_OCCUPANCY.MISS_OPCODE@filter_opc\\=3D0x18= 2@ / UNC_C_TOR_OCCUPANCY.MISS_OPCODE@filter_opc\\=3D0x182\\,thresh\\=3D1@", - "MetricGroup": "Mem;MemoryBW;SoC", - "MetricName": "MEM_Parallel_Reads" + "BriefDescription": "This metric represents Core fraction of cycle= s CPU dispatched uops on execution port 2 ([SNB+]Loads and Store-address; [= ICL+] Loads)", + "MetricExpr": "UOPS_DISPATCHED_PORT.PORT_2 / tma_info_core_clks", + "MetricGroup": "TopdownL6;tma_L6_group;tma_load_op_utilization_gro= up", + "MetricName": "tma_port_2", + "MetricThreshold": "tma_port_2 > 0.6", + "PublicDescription": "This metric represents Core fraction of cycl= es CPU dispatched uops on execution port 2 ([SNB+]Loads and Store-address; = [ICL+] Loads). Sample with: UOPS_DISPATCHED_PORT.PORT_2", + "ScaleUnit": "100%" }, { - "BriefDescription": "Socket actual clocks when any core is active = on that socket", - "MetricExpr": "cbox_0@event\\=3D0x0@", - "MetricGroup": "SoC", - "MetricName": "Socket_CLKS" + "BriefDescription": "This metric represents Core fraction of cycle= s CPU dispatched uops on execution port 3 ([SNB+]Loads and Store-address; [= ICL+] Loads)", + "MetricExpr": "UOPS_DISPATCHED_PORT.PORT_3 / tma_info_core_clks", + "MetricGroup": "TopdownL6;tma_L6_group;tma_load_op_utilization_gro= up", + "MetricName": "tma_port_3", + "MetricThreshold": "tma_port_3 > 0.6", + "PublicDescription": "This metric represents Core fraction of cycl= es CPU dispatched uops on execution port 3 ([SNB+]Loads and Store-address; = [ICL+] Loads). Sample with: UOPS_DISPATCHED_PORT.PORT_3", + "ScaleUnit": "100%" }, { - "BriefDescription": "Instructions per Far Branch ( Far Branches ap= ply upon transition from application to operating system, handling interrup= ts, exceptions) [lower number means higher occurrence rate]", - "MetricExpr": "INST_RETIRED.ANY / BR_INST_RETIRED.FAR_BRANCH:u", - "MetricGroup": "Branches;OS", - "MetricName": "IpFarBranch" + "BriefDescription": "This metric represents Core fraction of cycle= s CPU dispatched uops on execution port 4 (Store-data)", + "MetricExpr": "tma_store_op_utilization", + "MetricGroup": "TopdownL6;tma_L6_group;tma_issueSpSt;tma_store_op_= utilization_group", + "MetricName": "tma_port_4", + "MetricThreshold": "tma_port_4 > 0.6", + "PublicDescription": "This metric represents Core fraction of cycl= es CPU dispatched uops on execution port 4 (Store-data). Sample with: UOPS_= DISPATCHED_PORT.PORT_4. Related metrics: tma_split_stores", + "ScaleUnit": "100%" }, { - "BriefDescription": "Uncore frequency per die [GHZ]", - "MetricExpr": "Socket_CLKS / #num_dies / duration_time / 1e9", - "MetricGroup": "SoC", - "MetricName": "UNCORE_FREQ" + "BriefDescription": "This metric represents Core fraction of cycle= s CPU dispatched uops on execution port 5 ([SNB+] Branches and ALU; [HSW+] = ALU)", + "MetricExpr": "UOPS_DISPATCHED_PORT.PORT_5 / tma_info_core_clks", + "MetricGroup": "TopdownL6;tma_L6_group;tma_alu_op_utilization_grou= p;tma_issue2P", + "MetricName": "tma_port_5", + "MetricThreshold": "tma_port_5 > 0.6", + "PublicDescription": "This metric represents Core fraction of cycl= es CPU dispatched uops on execution port 5 ([SNB+] Branches and ALU; [HSW+]= ALU). Sample with: UOPS_DISPATCHED.PORT_5. Related metrics: tma_fp_scalar,= tma_fp_vector, tma_fp_vector_512b, tma_port_0, tma_port_1, tma_port_6, tma= _ports_utilized_2", + "ScaleUnit": "100%" }, { - "BriefDescription": "C3 residency percent per core", - "MetricExpr": "cstate_core@c3\\-residency@ / TSC", - "MetricGroup": "Power", - "MetricName": "C3_Core_Residency", + "BriefDescription": "This metric estimates fraction of cycles the = CPU performance was potentially limited due to Core computation issues (non= divider-related)", + "MetricConstraint": "NO_GROUP_EVENTS", + "MetricExpr": "(min(CPU_CLK_UNHALTED.THREAD, CYCLE_ACTIVITY.CYCLES= _NO_EXECUTE) + UOPS_EXECUTED.CYCLES_GE_1_UOP_EXEC - (UOPS_EXECUTED.CYCLES_G= E_3_UOPS_EXEC if tma_info_ipc > 1.8 else UOPS_EXECUTED.CYCLES_GE_2_UOPS_EXE= C) - (RS_EVENTS.EMPTY_CYCLES if tma_fetch_latency > 0.1 else 0) + RESOURCE_= STALLS.SB - RESOURCE_STALLS.SB - min(CPU_CLK_UNHALTED.THREAD, CYCLE_ACTIVIT= Y.STALLS_LDM_PENDING)) / tma_info_clks", + "MetricGroup": "PortsUtil;TopdownL3;tma_L3_group;tma_core_bound_gr= oup", + "MetricName": "tma_ports_utilization", + "MetricThreshold": "tma_ports_utilization > 0.15 & (tma_core_bound= > 0.1 & tma_backend_bound > 0.2)", + "PublicDescription": "This metric estimates fraction of cycles the= CPU performance was potentially limited due to Core computation issues (no= n divider-related). Two distinct categories can be attributed into this me= tric: (1) heavy data-dependency among contiguous instructions would manifes= t in this metric - such cases are often referred to as low Instruction Leve= l Parallelism (ILP). (2) Contention on some hardware execution unit other t= han Divider. For example; when there are too many multiply operations.", "ScaleUnit": "100%" }, { - "BriefDescription": "C6 residency percent per core", - "MetricExpr": "cstate_core@c6\\-residency@ / TSC", - "MetricGroup": "Power", - "MetricName": "C6_Core_Residency", + "BriefDescription": "This metric represents fraction of cycles CPU= executed no uops on any execution port (Logical Processor cycles since ICL= , Physical Core cycles otherwise)", + "MetricExpr": "(cpu@UOPS_EXECUTED.CORE\\,inv\\,cmask\\=3D1@ / 2 if= #SMT_on else (min(CPU_CLK_UNHALTED.THREAD, CYCLE_ACTIVITY.CYCLES_NO_EXECUT= E) - (RS_EVENTS.EMPTY_CYCLES if tma_fetch_latency > 0.1 else 0)) / tma_info= _core_clks)", + "MetricGroup": "PortsUtil;TopdownL4;tma_L4_group;tma_ports_utiliza= tion_group", + "MetricName": "tma_ports_utilized_0", + "MetricThreshold": "tma_ports_utilized_0 > 0.2 & (tma_ports_utiliz= ation > 0.15 & (tma_core_bound > 0.1 & tma_backend_bound > 0.2))", + "PublicDescription": "This metric represents fraction of cycles CP= U executed no uops on any execution port (Logical Processor cycles since IC= L, Physical Core cycles otherwise). Long-latency instructions like divides = may contribute to this metric.", "ScaleUnit": "100%" }, { - "BriefDescription": "C7 residency percent per core", - "MetricExpr": "cstate_core@c7\\-residency@ / TSC", - "MetricGroup": "Power", - "MetricName": "C7_Core_Residency", + "BriefDescription": "This metric represents fraction of cycles whe= re the CPU executed total of 1 uop per cycle on all execution ports (Logica= l Processor cycles since ICL, Physical Core cycles otherwise)", + "MetricExpr": "((cpu@UOPS_EXECUTED.CORE\\,cmask\\=3D1@ - cpu@UOPS_= EXECUTED.CORE\\,cmask\\=3D2@) / 2 if #SMT_on else (UOPS_EXECUTED.CYCLES_GE_= 1_UOP_EXEC - UOPS_EXECUTED.CYCLES_GE_2_UOPS_EXEC) / tma_info_core_clks)", + "MetricGroup": "PortsUtil;TopdownL4;tma_L4_group;tma_issueL1;tma_p= orts_utilization_group", + "MetricName": "tma_ports_utilized_1", + "MetricThreshold": "tma_ports_utilized_1 > 0.2 & (tma_ports_utiliz= ation > 0.15 & (tma_core_bound > 0.1 & tma_backend_bound > 0.2))", + "PublicDescription": "This metric represents fraction of cycles wh= ere the CPU executed total of 1 uop per cycle on all execution ports (Logic= al Processor cycles since ICL, Physical Core cycles otherwise). This can be= due to heavy data-dependency among software instructions; or over oversubs= cribing a particular hardware resource. In some other cases with high 1_Por= t_Utilized and L1_Bound; this metric can point to L1 data-cache latency bot= tleneck that may not necessarily manifest with complete execution starvatio= n (due to the short L1 latency e.g. walking a linked list) - looking at the= assembly can be helpful. Related metrics: tma_l1_bound", "ScaleUnit": "100%" }, { - "BriefDescription": "C2 residency percent per package", - "MetricExpr": "cstate_pkg@c2\\-residency@ / TSC", - "MetricGroup": "Power", - "MetricName": "C2_Pkg_Residency", + "BriefDescription": "This metric represents fraction of cycles CPU= executed total of 2 uops per cycle on all execution ports (Logical Process= or cycles since ICL, Physical Core cycles otherwise)", + "MetricExpr": "((cpu@UOPS_EXECUTED.CORE\\,cmask\\=3D2@ - cpu@UOPS_= EXECUTED.CORE\\,cmask\\=3D3@) / 2 if #SMT_on else (UOPS_EXECUTED.CYCLES_GE_= 2_UOPS_EXEC - UOPS_EXECUTED.CYCLES_GE_3_UOPS_EXEC) / tma_info_core_clks)", + "MetricGroup": "PortsUtil;TopdownL4;tma_L4_group;tma_issue2P;tma_p= orts_utilization_group", + "MetricName": "tma_ports_utilized_2", + "MetricThreshold": "tma_ports_utilized_2 > 0.15 & (tma_ports_utili= zation > 0.15 & (tma_core_bound > 0.1 & tma_backend_bound > 0.2))", + "PublicDescription": "This metric represents fraction of cycles CP= U executed total of 2 uops per cycle on all execution ports (Logical Proces= sor cycles since ICL, Physical Core cycles otherwise). Loop Vectorization = -most compilers feature auto-Vectorization options today- reduces pressure = on the execution ports as multiple elements are calculated with same uop. R= elated metrics: tma_fp_scalar, tma_fp_vector, tma_fp_vector_512b, tma_port_= 0, tma_port_1, tma_port_5, tma_port_6", "ScaleUnit": "100%" }, { - "BriefDescription": "C3 residency percent per package", - "MetricExpr": "cstate_pkg@c3\\-residency@ / TSC", - "MetricGroup": "Power", - "MetricName": "C3_Pkg_Residency", + "BriefDescription": "This metric represents fraction of cycles CPU= executed total of 3 or more uops per cycle on all execution ports (Logical= Processor cycles since ICL, Physical Core cycles otherwise).", + "MetricExpr": "(cpu@UOPS_EXECUTED.CORE\\,cmask\\=3D3@ / 2 if #SMT_= on else UOPS_EXECUTED.CYCLES_GE_3_UOPS_EXEC) / tma_info_core_clks", + "MetricGroup": "PortsUtil;TopdownL4;tma_L4_group;tma_ports_utiliza= tion_group", + "MetricName": "tma_ports_utilized_3m", + "MetricThreshold": "tma_ports_utilized_3m > 0.7 & (tma_ports_utili= zation > 0.15 & (tma_core_bound > 0.1 & tma_backend_bound > 0.2))", "ScaleUnit": "100%" }, { - "BriefDescription": "C6 residency percent per package", - "MetricExpr": "cstate_pkg@c6\\-residency@ / TSC", - "MetricGroup": "Power", - "MetricName": "C6_Pkg_Residency", + "BriefDescription": "This metric estimates fraction of cycles whil= e the memory subsystem was handling loads from remote cache in other socket= s including synchronizations issues", + "MetricConstraint": "NO_GROUP_EVENTS", + "MetricExpr": "(200 * (MEM_LOAD_UOPS_LLC_MISS_RETIRED.REMOTE_HITM = * (1 + MEM_LOAD_UOPS_RETIRED.HIT_LFB / (MEM_LOAD_UOPS_RETIRED.L2_HIT + MEM_= LOAD_UOPS_RETIRED.LLC_HIT + MEM_LOAD_UOPS_LLC_HIT_RETIRED.XSNP_HIT + MEM_LO= AD_UOPS_LLC_HIT_RETIRED.XSNP_HITM + MEM_LOAD_UOPS_LLC_HIT_RETIRED.XSNP_MISS= + MEM_LOAD_UOPS_LLC_MISS_RETIRED.LOCAL_DRAM + MEM_LOAD_UOPS_LLC_MISS_RETIR= ED.REMOTE_DRAM + MEM_LOAD_UOPS_LLC_MISS_RETIRED.REMOTE_HITM + MEM_LOAD_UOPS= _LLC_MISS_RETIRED.REMOTE_FWD))) + 180 * (MEM_LOAD_UOPS_LLC_MISS_RETIRED.REM= OTE_FWD * (1 + MEM_LOAD_UOPS_RETIRED.HIT_LFB / (MEM_LOAD_UOPS_RETIRED.L2_HI= T + MEM_LOAD_UOPS_RETIRED.LLC_HIT + MEM_LOAD_UOPS_LLC_HIT_RETIRED.XSNP_HIT = + MEM_LOAD_UOPS_LLC_HIT_RETIRED.XSNP_HITM + MEM_LOAD_UOPS_LLC_HIT_RETIRED.X= SNP_MISS + MEM_LOAD_UOPS_LLC_MISS_RETIRED.LOCAL_DRAM + MEM_LOAD_UOPS_LLC_MI= SS_RETIRED.REMOTE_DRAM + MEM_LOAD_UOPS_LLC_MISS_RETIRED.REMOTE_HITM + MEM_L= OAD_UOPS_LLC_MISS_RETIRED.REMOTE_FWD)))) / tma_info_clks", + "MetricGroup": "Offcore;Server;Snoop;TopdownL5;tma_L5_group;tma_is= sueSyncxn;tma_mem_latency_group", + "MetricName": "tma_remote_cache", + "MetricThreshold": "tma_remote_cache > 0.05 & (tma_mem_latency > 0= .1 & (tma_dram_bound > 0.1 & (tma_memory_bound > 0.2 & tma_backend_bound > = 0.2)))", + "PublicDescription": "This metric estimates fraction of cycles whi= le the memory subsystem was handling loads from remote cache in other socke= ts including synchronizations issues. This is caused often due to non-optim= al NUMA allocations. #link to NUMA article. Sample with: MEM_LOAD_UOPS_L3_M= ISS_RETIRED.REMOTE_HITM_PS;MEM_LOAD_UOPS_L3_MISS_RETIRED.REMOTE_FWD_PS. Rel= ated metrics: tma_contested_accesses, tma_data_sharing, tma_false_sharing, = tma_machine_clears", "ScaleUnit": "100%" }, { - "BriefDescription": "C7 residency percent per package", - "MetricExpr": "cstate_pkg@c7\\-residency@ / TSC", - "MetricGroup": "Power", - "MetricName": "C7_Pkg_Residency", + "BriefDescription": "This metric estimates fraction of cycles whil= e the memory subsystem was handling loads from remote memory", + "MetricConstraint": "NO_GROUP_EVENTS", + "MetricExpr": "310 * (MEM_LOAD_UOPS_LLC_MISS_RETIRED.REMOTE_DRAM *= (1 + MEM_LOAD_UOPS_RETIRED.HIT_LFB / (MEM_LOAD_UOPS_RETIRED.L2_HIT + MEM_L= OAD_UOPS_RETIRED.LLC_HIT + MEM_LOAD_UOPS_LLC_HIT_RETIRED.XSNP_HIT + MEM_LOA= D_UOPS_LLC_HIT_RETIRED.XSNP_HITM + MEM_LOAD_UOPS_LLC_HIT_RETIRED.XSNP_MISS = + MEM_LOAD_UOPS_LLC_MISS_RETIRED.LOCAL_DRAM + MEM_LOAD_UOPS_LLC_MISS_RETIRE= D.REMOTE_DRAM + MEM_LOAD_UOPS_LLC_MISS_RETIRED.REMOTE_HITM + MEM_LOAD_UOPS_= LLC_MISS_RETIRED.REMOTE_FWD))) / tma_info_clks", + "MetricGroup": "Server;Snoop;TopdownL5;tma_L5_group;tma_mem_latenc= y_group", + "MetricName": "tma_remote_dram", + "MetricThreshold": "tma_remote_dram > 0.1 & (tma_mem_latency > 0.1= & (tma_dram_bound > 0.1 & (tma_memory_bound > 0.2 & tma_backend_bound > 0.= 2)))", + "PublicDescription": "This metric estimates fraction of cycles whi= le the memory subsystem was handling loads from remote memory. This is caus= ed often due to non-optimal NUMA allocations. #link to NUMA article. Sample= with: MEM_LOAD_UOPS_L3_MISS_RETIRED.REMOTE_DRAM_PS", + "ScaleUnit": "100%" + }, + { + "BriefDescription": "This category represents fraction of slots ut= ilized by useful work i.e. issued uops that eventually get retired", + "MetricExpr": "UOPS_RETIRED.RETIRE_SLOTS / tma_info_slots", + "MetricGroup": "TmaL1;TopdownL1;tma_L1_group", + "MetricName": "tma_retiring", + "MetricThreshold": "tma_retiring > 0.7 | tma_heavy_operations > 0.= 1", + "PublicDescription": "This category represents fraction of slots u= tilized by useful work i.e. issued uops that eventually get retired. Ideall= y; all pipeline slots would be attributed to the Retiring category. Retiri= ng of 100% would indicate the maximum Pipeline_Width throughput was achieve= d. Maximizing Retiring typically increases the Instructions-per-cycle (see= IPC metric). Note that a high Retiring value does not necessary mean there= is no room for more performance. For example; Heavy-operations or Microco= de Assists are categorized under Retiring. They often indicate suboptimal p= erformance and can often be optimized or avoided. Sample with: UOPS_RETIRED= .RETIRE_SLOTS", + "ScaleUnit": "100%" + }, + { + "BriefDescription": "This metric estimates fraction of cycles hand= ling memory load split accesses - load that cross 64-byte cache line bounda= ry", + "MetricConstraint": "NO_GROUP_EVENTS", + "MetricExpr": "13 * LD_BLOCKS.NO_SR / tma_info_clks", + "MetricGroup": "TopdownL4;tma_L4_group;tma_l1_bound_group", + "MetricName": "tma_split_loads", + "MetricThreshold": "tma_split_loads > 0.2 & (tma_l1_bound > 0.1 & = (tma_memory_bound > 0.2 & tma_backend_bound > 0.2))", + "PublicDescription": "This metric estimates fraction of cycles han= dling memory load split accesses - load that cross 64-byte cache line bound= ary. Sample with: MEM_UOPS_RETIRED.SPLIT_LOADS_PS", + "ScaleUnit": "100%" + }, + { + "BriefDescription": "This metric represents rate of split store ac= cesses", + "MetricExpr": "2 * MEM_UOPS_RETIRED.SPLIT_STORES / tma_info_core_c= lks", + "MetricGroup": "TopdownL4;tma_L4_group;tma_issueSpSt;tma_store_bou= nd_group", + "MetricName": "tma_split_stores", + "MetricThreshold": "tma_split_stores > 0.2 & (tma_store_bound > 0.= 2 & (tma_memory_bound > 0.2 & tma_backend_bound > 0.2))", + "PublicDescription": "This metric represents rate of split store a= ccesses. Consider aligning your data to the 64-byte cache line granularity= . Sample with: MEM_UOPS_RETIRED.SPLIT_STORES_PS. Related metrics: tma_port_= 4", + "ScaleUnit": "100%" + }, + { + "BriefDescription": "This metric measures fraction of cycles where= the Super Queue (SQ) was full taking into account all request-types and bo= th hardware SMT threads (Logical Processors)", + "MetricExpr": "(OFFCORE_REQUESTS_BUFFER.SQ_FULL / 2 if #SMT_on els= e OFFCORE_REQUESTS_BUFFER.SQ_FULL) / tma_info_core_clks", + "MetricGroup": "MemoryBW;Offcore;TopdownL4;tma_L4_group;tma_issueB= W;tma_l3_bound_group", + "MetricName": "tma_sq_full", + "MetricThreshold": "tma_sq_full > 0.3 & (tma_l3_bound > 0.05 & (tm= a_memory_bound > 0.2 & tma_backend_bound > 0.2))", + "PublicDescription": "This metric measures fraction of cycles wher= e the Super Queue (SQ) was full taking into account all request-types and b= oth hardware SMT threads (Logical Processors). Related metrics: tma_fb_full= , tma_info_dram_bw_use, tma_mem_bandwidth", + "ScaleUnit": "100%" + }, + { + "BriefDescription": "This metric estimates how often CPU was stall= ed due to RFO store memory accesses; RFO store issue a read-for-ownership = request before the write", + "MetricExpr": "RESOURCE_STALLS.SB / tma_info_clks", + "MetricGroup": "MemoryBound;TmaL3mem;TopdownL3;tma_L3_group;tma_me= mory_bound_group", + "MetricName": "tma_store_bound", + "MetricThreshold": "tma_store_bound > 0.2 & (tma_memory_bound > 0.= 2 & tma_backend_bound > 0.2)", + "PublicDescription": "This metric estimates how often CPU was stal= led due to RFO store memory accesses; RFO store issue a read-for-ownership= request before the write. Even though store accesses do not typically stal= l out-of-order CPUs; there are few cases where stores can lead to actual st= alls. This metric will be flagged should RFO stores be a bottleneck. Sample= with: MEM_UOPS_RETIRED.ALL_STORES_PS", + "ScaleUnit": "100%" + }, + { + "BriefDescription": "This metric roughly estimates fraction of cyc= les when the memory subsystem had loads blocked since they could not forwar= d data from earlier (in program order) overlapping stores", + "MetricExpr": "13 * LD_BLOCKS.STORE_FORWARD / tma_info_clks", + "MetricGroup": "TopdownL4;tma_L4_group;tma_l1_bound_group", + "MetricName": "tma_store_fwd_blk", + "MetricThreshold": "tma_store_fwd_blk > 0.1 & (tma_l1_bound > 0.1 = & (tma_memory_bound > 0.2 & tma_backend_bound > 0.2))", + "PublicDescription": "This metric roughly estimates fraction of cy= cles when the memory subsystem had loads blocked since they could not forwa= rd data from earlier (in program order) overlapping stores. To streamline m= emory operations in the pipeline; a load can avoid waiting for memory if a = prior in-flight store is writing the data that the load wants to read (stor= e forwarding process). However; in some cases the load may be blocked for a= significant time pending the store forward. For example; when the prior st= ore is writing a smaller region than the load is reading.", + "ScaleUnit": "100%" + }, + { + "BriefDescription": "This metric estimates fraction of cycles the = CPU spent handling L1D store misses", + "MetricConstraint": "NO_GROUP_EVENTS", + "MetricExpr": "(L2_RQSTS.RFO_HIT * 9 * (1 - MEM_UOPS_RETIRED.LOCK_= LOADS / MEM_UOPS_RETIRED.ALL_STORES) + (1 - MEM_UOPS_RETIRED.LOCK_LOADS / M= EM_UOPS_RETIRED.ALL_STORES) * min(CPU_CLK_UNHALTED.THREAD, OFFCORE_REQUESTS= _OUTSTANDING.CYCLES_WITH_DEMAND_RFO)) / tma_info_clks", + "MetricGroup": "MemoryLat;Offcore;TopdownL4;tma_L4_group;tma_issue= RFO;tma_issueSL;tma_store_bound_group", + "MetricName": "tma_store_latency", + "MetricThreshold": "tma_store_latency > 0.1 & (tma_store_bound > 0= .2 & (tma_memory_bound > 0.2 & tma_backend_bound > 0.2))", + "PublicDescription": "This metric estimates fraction of cycles the= CPU spent handling L1D store misses. Store accesses usually less impact ou= t-of-order core performance; however; holding resources for longer time can= lead into undesired implications (e.g. contention on L1D fill-buffer entri= es - see FB_Full). Related metrics: tma_fb_full, tma_lock_latency", + "ScaleUnit": "100%" + }, + { + "BriefDescription": "This metric represents Core fraction of cycle= s CPU dispatched uops on execution port for Store operations", + "MetricExpr": "UOPS_DISPATCHED_PORT.PORT_4 / tma_info_core_clks", + "MetricGroup": "TopdownL5;tma_L5_group;tma_ports_utilized_3m_group= ", + "MetricName": "tma_store_op_utilization", + "MetricThreshold": "tma_store_op_utilization > 0.6", + "ScaleUnit": "100%" + }, + { + "BriefDescription": "This metric serves as an approximation of leg= acy x87 usage", + "MetricExpr": "UOPS_RETIRED.RETIRE_SLOTS * FP_COMP_OPS_EXE.X87 / U= OPS_EXECUTED.THREAD", + "MetricGroup": "Compute;TopdownL4;tma_L4_group;tma_fp_arith_group"= , + "MetricName": "tma_x87_use", + "MetricThreshold": "tma_x87_use > 0.1 & (tma_fp_arith > 0.2 & tma_= light_operations > 0.6)", + "PublicDescription": "This metric serves as an approximation of le= gacy x87 usage. It accounts for instructions beyond X87 FP arithmetic opera= tions; hence may be used as a thermometer to avoid X87 high usage and prefe= rably upgrade to modern ISA. See Tip under Tuning Hint.", "ScaleUnit": "100%" } ] --=20 2.39.2.637.g21b0678d19-goog