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 D3F86C433F5 for ; Wed, 12 Jan 2022 19:09:14 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1356541AbiALTJN convert rfc822-to-8bit (ORCPT ); Wed, 12 Jan 2022 14:09:13 -0500 Received: from out02.mta.xmission.com ([166.70.13.232]:35838 "EHLO out02.mta.xmission.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1356537AbiALTI6 (ORCPT ); Wed, 12 Jan 2022 14:08:58 -0500 Received: from in02.mta.xmission.com ([166.70.13.52]:43728) by out02.mta.xmission.com with esmtps (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.93) (envelope-from ) id 1n7izP-008jRt-2A; Wed, 12 Jan 2022 12:08:55 -0700 Received: from ip68-110-24-146.om.om.cox.net ([68.110.24.146]:44962 helo=email.froward.int.ebiederm.org.xmission.com) by in02.mta.xmission.com with esmtpsa (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.93) (envelope-from ) id 1n7izM-0017iX-Uq; Wed, 12 Jan 2022 12:08:54 -0700 From: "Eric W. Biederman" To: kernel test robot Cc: Alexey Gladkov , Gleb Fotengauer-Malinovskiy , LKML , lkp@lists.01.org, lkp@intel.com, ying.huang@intel.com, feng.tang@intel.com, zhengjun.xing@linux.intel.com, fengwei.yin@intel.com References: <20220112134211.GA10024@xsang-OptiPlex-9020> Date: Wed, 12 Jan 2022 13:08:23 -0600 In-Reply-To: <20220112134211.GA10024@xsang-OptiPlex-9020> (kernel test robot's message of "Wed, 12 Jan 2022 21:42:11 +0800") Message-ID: <874k68pyag.fsf@email.froward.int.ebiederm.org> User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/27.1 (gnu/linux) MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 8BIT X-XM-SPF: eid=1n7izM-0017iX-Uq;;;mid=<874k68pyag.fsf@email.froward.int.ebiederm.org>;;;hst=in02.mta.xmission.com;;;ip=68.110.24.146;;;frm=ebiederm@xmission.com;;;spf=neutral X-XM-AID: U2FsdGVkX1+QwHgyFlXld2lCyqslpaiEChw3kflu0yI= X-SA-Exim-Connect-IP: 68.110.24.146 X-SA-Exim-Mail-From: ebiederm@xmission.com Subject: Re: [ucounts] 59ec71575a: will-it-scale.per_process_ops -10.3% regression X-SA-Exim-Version: 4.2.1 (built Sat, 08 Feb 2020 21:53:50 +0000) X-SA-Exim-Scanned: Yes (on in02.mta.xmission.com) Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org kernel test robot writes: > Greeting, > > FYI, we noticed a -10.3% regression of will-it-scale.per_process_ops due to commit: I am having a bit of a challenge reading this report. Does the -10.3% mean that will-it-scale.per_process_ops is performing 70873 operations per second instead of 78995 aka -10.3% fewer operations per second? The per-profile.self-cycles-pp.do_dec_rlimits_put_ucounts now takes +2.6 more cycles, and perf-profile.self.cycles.pp.inc_rlimit_get_ucounts now takes +3.8 more cycles. Which if I read this correctly is a regression report about two functions taking 3 or 4 cycles more after the code was rearranged inside of them. Is that correct? Is this a regression report saying those two functions are taking a few cycles more which leads to will-it-scale.per_process_ops not being able to perform as many operations per second? Given the change in the commit mentioned I think this is all down to a bug fix causing the code to be rearranged and a compiler optimizations. I don't see much room to do anything about this. Eric > commit: 59ec71575ab440cd5ca0aa53b2a2985b3639fad4 ("ucounts: Fix rlimit max values check") > https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git master > > in testcase: will-it-scale > on test machine: 144 threads 4 sockets Intel(R) Xeon(R) Gold 5318H CPU @ 2.50GHz with 128G memory > with following parameters: > > nr_task: 100% > mode: process > test: signal1 > cpufreq_governor: performance > ucode: 0x7002302 > > test-description: Will It Scale takes a testcase and runs it from 1 through to n parallel copies to see if the testcase will scale. It builds both a process and threads based test in order to see any differences between the two. > test-url: https://github.com/antonblanchard/will-it-scale > > > > If you fix the issue, kindly add following tag > Reported-by: kernel test robot > > > Details are as below: > --------------------------------------------------------------------------------------------------> > > > To reproduce: > > git clone https://github.com/intel/lkp-tests.git > cd lkp-tests > sudo bin/lkp install job.yaml # job file is attached in this email > bin/lkp split-job --compatible job.yaml # generate the yaml file for lkp run > sudo bin/lkp run generated-yaml-file > > # if come across any failure that blocks the test, > # please remove ~/.lkp and /lkp dir to run from a clean state. > > ========================================================================================= > compiler/cpufreq_governor/kconfig/mode/nr_task/rootfs/tbox_group/test/testcase/ucode: > gcc-9/performance/x86_64-rhel-8.3/process/100%/debian-10.4-x86_64-20200603.cgz/lkp-cpl-4sp1/signal1/will-it-scale/0x7002302 > > commit: > v5.16-rc2 > 59ec71575a ("ucounts: Fix rlimit max values check") > > v5.16-rc2 59ec71575ab440cd5ca0aa53b2a > ---------------- --------------------------- > %stddev %change %stddev > \ | \ > 11375458 -10.3% 10205843 will-it-scale.144.processes > 78995 -10.3% 70873 will-it-scale.per_process_ops > 11375458 -10.3% 10205843 will-it-scale.workload > 35.26 +4.6% 36.90 turbostat.RAMWatt > 1.177e+10 -10.1% 1.058e+10 perf-stat.i.branch-instructions > 87846548 -6.7% 81932988 perf-stat.i.branch-misses > 43.42 +2.7 46.09 perf-stat.i.cache-miss-rate% > 91079467 ± 2% +27.6% 1.162e+08 perf-stat.i.cache-misses > 2.086e+08 +20.7% 2.517e+08 perf-stat.i.cache-references > 7.77 +11.8% 8.68 perf-stat.i.cpi > 5126 -21.1% 4044 perf-stat.i.cycles-between-cache-misses > 1.814e+10 -10.6% 1.621e+10 ± 2% perf-stat.i.dTLB-loads > 1.17e+10 -11.1% 1.04e+10 ± 2% perf-stat.i.dTLB-stores > 53823400 -22.3% 41823499 ± 16% perf-stat.i.iTLB-load-misses > 6e+10 -9.9% 5.405e+10 perf-stat.i.instructions > 0.13 -10.5% 0.12 perf-stat.i.ipc > 290.39 -10.4% 260.05 ± 2% perf-stat.i.metric.M/sec > 5934502 ± 3% +38.4% 8213006 perf-stat.i.node-load-misses > 504440 ± 3% +34.1% 676425 ± 2% perf-stat.i.node-loads > 3.48 +34.0% 4.66 perf-stat.overall.MPKI > 0.75 +0.0 0.77 ± 2% perf-stat.overall.branch-miss-rate% > 43.63 +2.5 46.13 perf-stat.overall.cache-miss-rate% > 7.78 +11.8% 8.70 perf-stat.overall.cpi > 5128 -21.1% 4045 perf-stat.overall.cycles-between-cache-misses > 0.13 -10.5% 0.11 perf-stat.overall.ipc > 1.174e+10 -10.1% 1.055e+10 perf-stat.ps.branch-instructions > 87583795 -6.8% 81664372 perf-stat.ps.branch-misses > 90844134 ± 2% +27.5% 1.158e+08 perf-stat.ps.cache-misses > 2.082e+08 +20.6% 2.511e+08 perf-stat.ps.cache-references > 1.809e+10 -10.7% 1.616e+10 ± 2% perf-stat.ps.dTLB-loads > 1.167e+10 -11.1% 1.037e+10 ± 2% perf-stat.ps.dTLB-stores > 53794169 -22.4% 41750328 ± 16% perf-stat.ps.iTLB-load-misses > 5.984e+10 -10.0% 5.388e+10 perf-stat.ps.instructions > 5915765 ± 3% +38.4% 8188054 perf-stat.ps.node-load-misses > 542552 ± 4% +30.8% 709510 ± 3% perf-stat.ps.node-loads > 1.826e+13 -10.5% 1.634e+13 perf-stat.total.instructions > 48.83 -8.5 40.29 perf-profile.calltrace.cycles-pp.security_task_kill.do_send_specific.do_tkill.__x64_sys_tgkill.do_syscall_64 > 48.72 -8.5 40.21 perf-profile.calltrace.cycles-pp.apparmor_task_kill.security_task_kill.do_send_specific.do_tkill.__x64_sys_tgkill > 66.93 -4.7 62.21 perf-profile.calltrace.cycles-pp.__x64_sys_tgkill.do_syscall_64.entry_SYSCALL_64_after_hwframe.raise > 66.86 -4.7 62.16 perf-profile.calltrace.cycles-pp.do_tkill.__x64_sys_tgkill.do_syscall_64.entry_SYSCALL_64_after_hwframe.raise > 66.62 -4.7 61.93 perf-profile.calltrace.cycles-pp.do_send_specific.do_tkill.__x64_sys_tgkill.do_syscall_64.entry_SYSCALL_64_after_hwframe > 21.22 -4.1 17.12 perf-profile.calltrace.cycles-pp.aa_get_task_label.apparmor_task_kill.security_task_kill.do_send_specific.do_tkill > 95.18 -1.5 93.70 perf-profile.calltrace.cycles-pp.raise > 2.11 -1.1 0.96 ±100% perf-profile.calltrace.cycles-pp.__setup_rt_frame.arch_do_signal_or_restart.exit_to_user_mode_prepare.syscall_exit_to_user_mode.do_syscall_64 > 1.70 -0.9 0.78 ±100% perf-profile.calltrace.cycles-pp.copy_fpstate_to_sigframe.__setup_rt_frame.arch_do_signal_or_restart.exit_to_user_mode_prepare.syscall_exit_to_user_mode > 1.48 -0.8 0.70 ±100% perf-profile.calltrace.cycles-pp.__fpu_restore_sig.fpu__restore_sig.restore_sigcontext.__x64_sys_rt_sigreturn.do_syscall_64 > 92.89 -0.8 92.13 perf-profile.calltrace.cycles-pp.entry_SYSCALL_64_after_hwframe.raise > 92.54 -0.7 91.80 perf-profile.calltrace.cycles-pp.do_syscall_64.entry_SYSCALL_64_after_hwframe.raise > 1.04 -0.5 0.50 ±100% perf-profile.calltrace.cycles-pp.restore_fpregs_from_user.__fpu_restore_sig.fpu__restore_sig.restore_sigcontext.__x64_sys_rt_sigreturn > 2.38 ± 5% -0.4 1.96 ± 4% perf-profile.calltrace.cycles-pp.aa_may_signal.apparmor_task_kill.security_task_kill.do_send_specific.do_tkill > 1.50 -0.4 1.11 ± 23% perf-profile.calltrace.cycles-pp.__entry_text_start.raise > 1.56 -0.2 1.40 ± 5% perf-profile.calltrace.cycles-pp.restore_sigcontext.__x64_sys_rt_sigreturn.do_syscall_64.entry_SYSCALL_64_after_hwframe.raise > 1.52 -0.2 1.36 ± 5% perf-profile.calltrace.cycles-pp.fpu__restore_sig.restore_sigcontext.__x64_sys_rt_sigreturn.do_syscall_64.entry_SYSCALL_64_after_hwframe > 2.20 +0.3 2.54 ± 8% perf-profile.calltrace.cycles-pp.__x64_sys_rt_sigreturn.do_syscall_64.entry_SYSCALL_64_after_hwframe.raise > 0.62 ± 3% +0.5 1.12 ± 26% perf-profile.calltrace.cycles-pp.restore_altstack.__x64_sys_rt_sigreturn.do_syscall_64.entry_SYSCALL_64_after_hwframe.raise > 1.69 ± 2% +0.6 2.25 ± 9% perf-profile.calltrace.cycles-pp.do_syscall_64.entry_SYSCALL_64_after_hwframe.handler > 1.70 ± 2% +0.6 2.26 ± 9% perf-profile.calltrace.cycles-pp.entry_SYSCALL_64_after_hwframe.handler > 1.68 ± 2% +0.6 2.24 ± 9% perf-profile.calltrace.cycles-pp.exit_to_user_mode_prepare.syscall_exit_to_user_mode.do_syscall_64.entry_SYSCALL_64_after_hwframe.handler > 1.68 ± 2% +0.6 2.25 ± 9% perf-profile.calltrace.cycles-pp.syscall_exit_to_user_mode.do_syscall_64.entry_SYSCALL_64_after_hwframe.handler > 0.00 +0.6 0.64 ± 15% perf-profile.calltrace.cycles-pp.__set_current_blocked.__x64_sys_rt_sigreturn.do_syscall_64.entry_SYSCALL_64_after_hwframe > 0.00 +0.8 0.84 ± 36% perf-profile.calltrace.cycles-pp._raw_spin_lock_irq.do_sigaltstack.restore_altstack.__x64_sys_rt_sigreturn.do_syscall_64 > 0.00 +0.9 0.89 ± 34% perf-profile.calltrace.cycles-pp.do_sigaltstack.restore_altstack.__x64_sys_rt_sigreturn.do_syscall_64.entry_SYSCALL_64_after_hwframe > 1.08 ± 4% +1.0 2.11 ± 4% perf-profile.calltrace.cycles-pp._raw_spin_lock_irq.__set_current_blocked.sigprocmask.__x64_sys_rt_sigprocmask.do_syscall_64 > 2.65 +1.3 3.90 ± 3% perf-profile.calltrace.cycles-pp.__x64_sys_rt_sigprocmask.do_syscall_64.entry_SYSCALL_64_after_hwframe.raise > 4.24 +1.3 5.56 ± 4% perf-profile.calltrace.cycles-pp.handler > 1.76 ± 2% +1.3 3.11 ± 4% perf-profile.calltrace.cycles-pp.sigprocmask.__x64_sys_rt_sigprocmask.do_syscall_64.entry_SYSCALL_64_after_hwframe.raise > 1.70 ± 2% +1.4 3.06 ± 4% perf-profile.calltrace.cycles-pp.__set_current_blocked.sigprocmask.__x64_sys_rt_sigprocmask.do_syscall_64.entry_SYSCALL_64_after_hwframe > 20.17 ± 2% +2.5 22.62 perf-profile.calltrace.cycles-pp.syscall_exit_to_user_mode.do_syscall_64.entry_SYSCALL_64_after_hwframe.raise > 19.97 ± 2% +2.5 22.47 perf-profile.calltrace.cycles-pp.exit_to_user_mode_prepare.syscall_exit_to_user_mode.do_syscall_64.entry_SYSCALL_64_after_hwframe.raise > 16.45 ± 2% +3.8 20.23 perf-profile.calltrace.cycles-pp.__send_signal.do_send_sig_info.do_send_specific.do_tkill.__x64_sys_tgkill > 16.19 ± 2% +3.8 20.00 perf-profile.calltrace.cycles-pp.__sigqueue_alloc.__send_signal.do_send_sig_info.do_send_specific.do_tkill > 15.60 ± 2% +3.8 19.44 perf-profile.calltrace.cycles-pp.inc_rlimit_get_ucounts.__sigqueue_alloc.__send_signal.do_send_sig_info.do_send_specific > 17.39 ± 2% +3.9 21.29 perf-profile.calltrace.cycles-pp.do_send_sig_info.do_send_specific.do_tkill.__x64_sys_tgkill.do_syscall_64 > 48.84 -8.5 40.29 perf-profile.children.cycles-pp.security_task_kill > 48.81 -8.5 40.27 perf-profile.children.cycles-pp.apparmor_task_kill > 66.95 -4.7 62.22 perf-profile.children.cycles-pp.__x64_sys_tgkill > 66.87 -4.7 62.16 perf-profile.children.cycles-pp.do_tkill > 66.62 -4.7 61.93 perf-profile.children.cycles-pp.do_send_specific > 21.31 ± 2% -4.1 17.17 perf-profile.children.cycles-pp.aa_get_task_label > 95.20 -1.0 94.16 perf-profile.children.cycles-pp.raise > 1.49 -0.6 0.91 ± 55% perf-profile.children.cycles-pp.__fpu_restore_sig > 2.38 ± 5% -0.4 1.96 ± 4% perf-profile.children.cycles-pp.aa_may_signal > 1.92 -0.2 1.73 ± 4% perf-profile.children.cycles-pp.restore_sigcontext > 2.12 -0.2 1.93 perf-profile.children.cycles-pp.__setup_rt_frame > 1.72 -0.2 1.56 perf-profile.children.cycles-pp.copy_fpstate_to_sigframe > 1.52 -0.2 1.37 ± 4% perf-profile.children.cycles-pp.fpu__restore_sig > 1.00 -0.1 0.89 ± 2% perf-profile.children.cycles-pp._copy_from_user > 1.00 -0.1 0.88 perf-profile.children.cycles-pp.__entry_text_start > 1.04 -0.1 0.93 ± 7% perf-profile.children.cycles-pp.restore_fpregs_from_user > 0.89 -0.1 0.78 ± 2% perf-profile.children.cycles-pp.syscall_return_via_sysret > 0.52 -0.1 0.46 ± 2% perf-profile.children.cycles-pp.copy_user_enhanced_fast_string > 0.49 -0.1 0.44 perf-profile.children.cycles-pp.copy_user_generic_unrolled > 0.64 -0.0 0.59 ± 5% perf-profile.children.cycles-pp.__might_fault > 0.12 ± 4% -0.0 0.08 ± 27% perf-profile.children.cycles-pp.syscall_exit_to_user_mode_prepare > 0.27 ± 2% -0.0 0.24 ± 2% perf-profile.children.cycles-pp.__clear_user > 0.19 ± 2% -0.0 0.16 ± 10% perf-profile.children.cycles-pp.__might_sleep > 0.25 -0.0 0.23 ± 2% perf-profile.children.cycles-pp.__get_user_nocheck_8 > 0.20 ± 3% -0.0 0.18 ± 2% perf-profile.children.cycles-pp.__put_user_nocheck_4 > 0.14 ± 3% -0.0 0.12 ± 3% perf-profile.children.cycles-pp.syscall_enter_from_user_mode > 0.15 -0.0 0.14 ± 3% perf-profile.children.cycles-pp.entry_SYSCALL_64_safe_stack > 0.15 ± 3% -0.0 0.13 ± 3% perf-profile.children.cycles-pp.__x64_sys_getpid > 0.63 ± 5% +0.1 0.75 ± 7% perf-profile.children.cycles-pp._raw_spin_lock_irqsave > 0.95 +0.1 1.08 ± 7% perf-profile.children.cycles-pp.fpu__clear_user_states > 0.63 ± 4% +0.2 0.83 ± 11% perf-profile.children.cycles-pp.fpregs_mark_activate > 1.20 +0.4 1.59 perf-profile.children.cycles-pp.native_irq_return_iret > 0.66 ± 5% +0.4 1.08 ± 13% perf-profile.children.cycles-pp.signal_setup_done > 3.37 +0.5 3.86 ± 2% perf-profile.children.cycles-pp.__x64_sys_rt_sigreturn > 0.63 ± 3% +0.5 1.13 ± 26% perf-profile.children.cycles-pp.restore_altstack > 0.35 ± 5% +0.5 0.89 ± 34% perf-profile.children.cycles-pp.do_sigaltstack > 1.88 ± 4% +0.6 2.50 ± 2% perf-profile.children.cycles-pp.recalc_sigpending > 3.17 +0.9 4.08 ± 5% perf-profile.children.cycles-pp.handler > 2.67 +1.2 3.92 ± 3% perf-profile.children.cycles-pp.__x64_sys_rt_sigprocmask > 1.77 ± 2% +1.3 3.12 ± 4% perf-profile.children.cycles-pp.sigprocmask > 2.77 ± 2% +2.0 4.77 ± 7% perf-profile.children.cycles-pp.__set_current_blocked > 2.49 ± 3% +2.0 4.54 perf-profile.children.cycles-pp._raw_spin_lock_irq > 15.12 ± 2% +2.6 17.72 perf-profile.children.cycles-pp.do_dec_rlimit_put_ucounts > 16.73 ± 2% +2.7 19.40 ± 2% perf-profile.children.cycles-pp.dequeue_signal > 17.48 ± 2% +2.7 20.15 ± 2% perf-profile.children.cycles-pp.get_signal > 21.90 ± 2% +3.0 24.92 perf-profile.children.cycles-pp.syscall_exit_to_user_mode > 21.34 ± 2% +3.0 24.39 perf-profile.children.cycles-pp.arch_do_signal_or_restart > 21.67 ± 2% +3.1 24.74 perf-profile.children.cycles-pp.exit_to_user_mode_prepare > 16.48 ± 2% +3.8 20.25 perf-profile.children.cycles-pp.__send_signal > 16.20 ± 2% +3.8 20.01 perf-profile.children.cycles-pp.__sigqueue_alloc > 15.60 ± 2% +3.8 19.44 perf-profile.children.cycles-pp.inc_rlimit_get_ucounts > 17.40 ± 2% +3.9 21.30 perf-profile.children.cycles-pp.do_send_sig_info > 21.19 -4.1 17.07 perf-profile.self.cycles-pp.aa_get_task_label > 24.97 -4.0 21.02 perf-profile.self.cycles-pp.apparmor_task_kill > 0.81 -0.4 0.40 ± 85% perf-profile.self.cycles-pp.restore_fpregs_from_user > 2.37 ± 5% -0.4 1.95 ± 4% perf-profile.self.cycles-pp.aa_may_signal > 0.89 -0.1 0.78 ± 2% perf-profile.self.cycles-pp.syscall_return_via_sysret > 0.88 -0.1 0.77 perf-profile.self.cycles-pp.raise > 0.93 -0.1 0.84 ± 2% perf-profile.self.cycles-pp.copy_fpstate_to_sigframe > 0.54 -0.1 0.47 ± 5% perf-profile.self.cycles-pp.fpu__clear_user_states > 0.50 -0.1 0.44 ± 2% perf-profile.self.cycles-pp.copy_user_enhanced_fast_string > 0.36 ± 2% -0.1 0.31 ± 8% perf-profile.self.cycles-pp.__setup_rt_frame > 0.47 -0.1 0.42 perf-profile.self.cycles-pp.copy_user_generic_unrolled > 0.16 ± 3% -0.0 0.11 ± 26% perf-profile.self.cycles-pp.kmem_cache_free > 0.38 -0.0 0.34 ± 2% perf-profile.self.cycles-pp.entry_SYSCALL_64_after_hwframe > 0.43 -0.0 0.38 perf-profile.self.cycles-pp.__entry_text_start > 0.22 -0.0 0.19 ± 3% perf-profile.self.cycles-pp.__x64_sys_rt_sigprocmask > 0.17 ± 2% -0.0 0.14 ± 10% perf-profile.self.cycles-pp.__might_sleep > 0.25 -0.0 0.22 ± 3% perf-profile.self.cycles-pp.__get_user_nocheck_8 > 0.19 ± 2% -0.0 0.17 ± 2% perf-profile.self.cycles-pp.__put_user_nocheck_4 > 0.16 ± 2% -0.0 0.14 ± 4% perf-profile.self.cycles-pp.__send_signal > 0.17 ± 2% -0.0 0.15 ± 3% perf-profile.self.cycles-pp.__clear_user > 0.22 ± 2% -0.0 0.20 ± 3% perf-profile.self.cycles-pp.kmem_cache_alloc > 0.13 -0.0 0.11 ± 3% perf-profile.self.cycles-pp.syscall_enter_from_user_mode > 0.15 -0.0 0.13 ± 3% perf-profile.self.cycles-pp.entry_SYSCALL_64_safe_stack > 0.12 ± 2% -0.0 0.10 ± 4% perf-profile.self.cycles-pp._copy_from_user > 0.10 ± 4% -0.0 0.09 ± 5% perf-profile.self.cycles-pp.handler > 0.14 ± 3% -0.0 0.12 ± 5% perf-profile.self.cycles-pp.get_signal > 0.11 -0.0 0.09 ± 5% perf-profile.self.cycles-pp.__might_fault > 0.08 ± 5% -0.0 0.07 perf-profile.self.cycles-pp.__sigqueue_alloc > 0.09 ± 3% -0.0 0.08 ± 4% perf-profile.self.cycles-pp.restore_sigcontext > 0.63 ± 5% +0.1 0.75 ± 7% perf-profile.self.cycles-pp._raw_spin_lock_irqsave > 0.60 ± 5% +0.2 0.81 ± 11% perf-profile.self.cycles-pp.fpregs_mark_activate > 1.20 +0.4 1.59 perf-profile.self.cycles-pp.native_irq_return_iret > 1.48 ± 5% +0.7 2.22 ± 14% perf-profile.self.cycles-pp.recalc_sigpending > 2.48 ± 3% +2.0 4.53 perf-profile.self.cycles-pp._raw_spin_lock_irq > 15.12 ± 2% +2.6 17.72 perf-profile.self.cycles-pp.do_dec_rlimit_put_ucounts > 15.60 ± 2% +3.8 19.44 perf-profile.self.cycles-pp.inc_rlimit_get_ucounts > > > > > Disclaimer: > Results have been estimated based on internal Intel analysis and are provided > for informational purposes only. Any difference in system hardware or software > design or configuration may affect actual performance. > > > --- > 0DAY/LKP+ Test Infrastructure Open Source Technology Center > https://lists.01.org/hyperkitty/list/lkp@lists.01.org Intel Corporation > > Thanks, > Oliver Sang