Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753452AbaB1Rn7 (ORCPT ); Fri, 28 Feb 2014 12:43:59 -0500 Received: from mx1.redhat.com ([209.132.183.28]:33636 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753282AbaB1Rn6 (ORCPT ); Fri, 28 Feb 2014 12:43:58 -0500 From: Don Zickus To: acme@ghostprotocols.net Cc: LKML , jolsa@redhat.com, jmario@redhat.com, fowles@inreach.com, eranian@google.com, Don Zickus Subject: [PATCH 19/19] perf, c2c: Add shared cachline summary table Date: Fri, 28 Feb 2014 12:43:08 -0500 Message-Id: <1393609388-40489-20-git-send-email-dzickus@redhat.com> In-Reply-To: <1393609388-40489-1-git-send-email-dzickus@redhat.com> References: <1393609388-40489-1-git-send-email-dzickus@redhat.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org This adds a quick summary of the hottest cache contention lines based on the input data. This summarizes what the broken table shows you, so you can see at a quick glance which cachelines are interesting. Originally done by Dick Fowles, backported by me. Sample output (width trimmed): =================================================================================================================================================== Shared Data Cache Line Table Total %All Total ---- Core Load Hit ---- -- LLC Load Hit -- ----- LLC Load Hitm ----- Index Phys Adrs Records Ld Miss %hitm Loads FB L1D L2D Lcl Rmt Total Lcl Rmt ==================================================================================================================================================== 0 0xffff881fa55b0140 72006 16.97% 23.31% 43095 13591 16860 45 2651 25 9526 3288 6238 1 0xffff881fba47f000 21854 5.29% 7.26% 13938 3887 6941 15 1 7 3087 1143 1944 2 0xffff881fc21b9cc0 2153 1.61% 2.21% 862 32 70 0 15 1 740 148 592 3 0xffff881fc7d91cc0 1957 1.40% 1.92% 866 34 94 0 14 3 720 207 513 4 0xffff881fba539cc0 1813 1.35% 1.85% 808 33 84 3 14 1 665 170 495 Original-by: Dick Fowles Signed-off-by: Don Zickus --- tools/perf/builtin-c2c.c | 136 +++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 136 insertions(+) diff --git a/tools/perf/builtin-c2c.c b/tools/perf/builtin-c2c.c index 0749ea6..57441b9 100644 --- a/tools/perf/builtin-c2c.c +++ b/tools/perf/builtin-c2c.c @@ -783,6 +783,141 @@ cleanup: } } +static void print_c2c_shared_cacheline_report(struct rb_root *hitm_tree, + struct c2c_stats *shared_stats __maybe_unused, + struct c2c_stats *c2c_stats __maybe_unused) +{ +#define SHM_TITLE "Shared Data Cache Line Table" + + struct rb_node *next = rb_first(hitm_tree); + struct c2c_hit *h; + char header[256]; + char delimit[256]; + u32 crecords; + u32 lclmiss; + u32 ldcnt; + double p_hitm; + double p_all; + int totmiss; + int rmt_hitm; + int len; + int pad; + int i; + + sprintf(header,"%28s %8s %8s %8s %8s %28s %18s %28s %18s %8s %28s", + " ", + "Total", + "%All ", + " ", + "Total", + "---- Core Load Hit ----", + "-- LLC Load Hit --", + "----- LLC Load Hitm -----", + "-- Load Dram --", + "LLC ", + "---- Store Reference ----"); + + len = strlen(header); + delimit[0] = '\0'; + + for (i = 0; i < len; i++) + strcat(delimit, "="); + + printf("\n\n"); + printf("%s\n", delimit); + printf("\n"); + pad = (strlen(header)/2) - (strlen(SHM_TITLE)/2); + for (i = 0; i < pad; i++) + printf(" "); + printf("%s\n", SHM_TITLE); + printf("\n"); + printf("%s\n", header); + + sprintf(header, "%8s %18s %8s %8s %8s %8s %8s %8s %8s %8s %8s %8s %8s %8s %8s %8s %8s %8s %8s %8s", + "Index", + "Phys Adrs", + "Records", + "Ld Miss", + "%hitm", + "Loads", + "FB", + "L1D", + "L2D", + "Lcl", + "Rmt", + "Total", + "Lcl", + "Rmt", + "Lcl", + "Rmt", + "Ld Miss", + "Total", + "L1Hit", + "L1Miss"); + + printf("%s\n", header); + printf("%s\n", delimit); + + rmt_hitm = c2c_stats->t.rmt_hitm; + totmiss = c2c_stats->t.lcl_dram + + c2c_stats->t.rmt_dram + + c2c_stats->t.rmt_hit + + c2c_stats->t.rmt_hitm; + + i = 0; + while (next) { + h = rb_entry(next, struct c2c_hit, rb_node); + next = rb_next(&h->rb_node); + + lclmiss = h->stats.t.lcl_dram + + h->stats.t.rmt_dram + + h->stats.t.rmt_hitm + + h->stats.t.rmt_hit; + + ldcnt = lclmiss + + h->stats.t.ld_fbhit + + h->stats.t.ld_l1hit + + h->stats.t.ld_l2hit + + h->stats.t.ld_llchit + + h->stats.t.lcl_hitm; + + crecords = ldcnt + + h->stats.t.st_l1hit + + h->stats.t.st_l1miss; + + p_hitm = (double)h->stats.t.rmt_hitm / (double)rmt_hitm; + p_all = (double)h->stats.t.rmt_hitm / (double)totmiss; + + /* stop when the percentage gets to low */ + if (p_hitm < DISPLAY_LINE_LIMIT) + break; + + printf("%8d %#18lx %8u %7.2f%% %7.2f%% %8u %8u %8u %8u %8u %8u %8u %8u %8u %8u %8u %8u %8u %8u %8u\n", + i, + h->cacheline, + crecords, + 100. * p_all, + 100. * p_hitm, + ldcnt, + h->stats.t.ld_fbhit, + h->stats.t.ld_l1hit, + h->stats.t.ld_l2hit, + h->stats.t.ld_llchit, + h->stats.t.rmt_hit, + h->stats.t.lcl_hitm + h->stats.t.rmt_hitm, + h->stats.t.lcl_hitm, + h->stats.t.rmt_hitm, + h->stats.t.lcl_dram, + h->stats.t.rmt_dram, + lclmiss, + h->stats.t.store, + h->stats.t.st_l1hit, + h->stats.t.st_l1miss); + + i++; + } +} + static void print_hitm_cacheline_header(void) { #define SHARING_REPORT_TITLE "Shared Cache Line Distribution Pareto" @@ -1290,6 +1425,7 @@ static void c2c_analyze_hitms(struct perf_c2c *c2c) free(h); print_shared_cacheline_info(&hitm_stats, shared_clines); + print_c2c_shared_cacheline_report(&hitm_tree, &hitm_stats, &c2c->stats); print_c2c_hitm_report(&hitm_tree, &hitm_stats, &c2c->stats); cleanup: -- 1.7.11.7 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/