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[2620:137:e000::1:20]) by mx.google.com with ESMTP id c4-20020a170902d48400b001b82da85c5asi4830105plg.336.2023.08.12.02.19.56; Sat, 12 Aug 2023 02:20:08 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20; Authentication-Results: mx.google.com; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=fail (p=QUARANTINE sp=QUARANTINE dis=NONE) header.from=huawei.com Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S236776AbjHLIwU (ORCPT + 99 others); Sat, 12 Aug 2023 04:52:20 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:38380 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S236139AbjHLIwE (ORCPT ); Sat, 12 Aug 2023 04:52:04 -0400 Received: from szxga02-in.huawei.com (szxga02-in.huawei.com [45.249.212.188]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id C4BBF2694; Sat, 12 Aug 2023 01:52:05 -0700 (PDT) Received: from kwepemm600003.china.huawei.com (unknown [172.30.72.56]) by szxga02-in.huawei.com (SkyGuard) with ESMTP id 4RNDr94VYrzTmPN; Sat, 12 Aug 2023 16:50:01 +0800 (CST) Received: from localhost.localdomain (10.67.174.95) by kwepemm600003.china.huawei.com (7.193.23.202) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2507.27; Sat, 12 Aug 2023 16:52:00 +0800 From: Yang Jihong To: , , , , , , , , , , , , , CC: Subject: [RFC v1 00/16] perf kwork: Implement perf kwork top Date: Sat, 12 Aug 2023 08:49:01 +0000 Message-ID: <20230812084917.169338-1-yangjihong1@huawei.com> X-Mailer: git-send-email 2.30.GIT MIME-Version: 1.0 Content-Transfer-Encoding: 7BIT Content-Type: text/plain; charset=US-ASCII X-Originating-IP: [10.67.174.95] X-ClientProxiedBy: dggems706-chm.china.huawei.com (10.3.19.183) To kwepemm600003.china.huawei.com (7.193.23.202) X-CFilter-Loop: Reflected X-Spam-Status: No, score=-4.2 required=5.0 tests=BAYES_00,RCVD_IN_DNSWL_MED, RCVD_IN_MSPIKE_H5,RCVD_IN_MSPIKE_WL,SPF_HELO_NONE,SPF_PASS, URIBL_BLOCKED autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Some common tools for collecting statistics on CPU usage, such as top, obtain statistics from timer interrupt sampling, and then periodically read statistics from /proc/stat. This method has some deviations: 1. In the tick interrupt, the time between the last tick and the current tick is counted in the current task. However, the task may be running only part of the time. 2. For each task, the top tool periodically reads the /proc/{PID}/status information. For tasks with a short life cycle, it may be missed. In conclusion, the top tool cannot accurately collect statistics on the CPU usage and running time of tasks. The statistical method based on sched_switch tracepoint can accurately calculate the CPU usage of all tasks. This method is applicable to scenarios where performance comparison data is of high precision. In addition to parsing the perf.data file, the provides BPF-based CPU usage statistics to reduce the load of the perf process. Example usage: # perf kwork top -h Usage: perf kwork top [] -C, --cpu list of cpus to profile -i, --input input file name -n, --name event name to profile -s, --sort sort by key(s): rate, runtime, tid --time Time span for analysis (start,stop) # ./perf kwork -k sched,irq,softirq record -- ./perf bench sched messaging -g 1 -l 10000 # Running 'sched/messaging' benchmark: # 20 sender and receiver processes per group # 1 groups == 40 processes run Total time: 1.854 [sec] [ perf record: Woken up 13 times to write data ] [ perf record: Captured and wrote 27.436 MB perf.data (235986 samples) ] # # perf kwork top Total : 22419.068 ms, 12 cpus %Cpu(s): 17.99% id, 0.00% hi, 0.09% si %Cpu0 [|||||||||||||||||||||||| 82.56%] %Cpu1 [|||||||||||||||||||||||| 81.73%] %Cpu2 [|||||||||||||||||||||||| 83.00%] %Cpu3 [|||||||||||||||||||||||| 81.01%] %Cpu4 [|||||||||||||||||||||||| 81.66%] %Cpu5 [|||||||||||||||||||||||| 82.10%] %Cpu6 [|||||||||||||||||||||||| 81.65%] %Cpu7 [|||||||||||||||||||||||| 82.00%] %Cpu8 [|||||||||||||||||||||||| 82.54%] %Cpu9 [|||||||||||||||||||||||| 81.02%] %Cpu10 [|||||||||||||||||||||||| 81.78%] %Cpu11 [|||||||||||||||||||||||| 81.87%] PID %CPU RUNTIME COMMMAND ---------------------------------------------------- 2913025 27.62 516.976 ms sched-messaging 2913017 27.56 516.273 ms sched-messaging 2913018 27.56 516.152 ms sched-messaging 2913008 27.54 515.447 ms sched-messaging 2913010 27.50 514.890 ms sched-messaging 2913007 27.48 514.411 ms sched-messaging 2913015 27.36 512.563 ms sched-messaging 2913026 27.35 512.198 ms sched-messaging 2913011 27.32 511.632 ms sched-messaging 2913014 27.32 511.381 ms sched-messaging 2913012 27.30 511.138 ms sched-messaging 2913013 27.30 511.109 ms sched-messaging 2913009 27.30 510.997 ms sched-messaging 2913019 27.25 510.488 ms sched-messaging 2913021 27.23 509.661 ms sched-messaging 2913023 27.21 509.400 ms sched-messaging 2913020 27.20 509.677 ms sched-messaging 2913022 27.19 509.061 ms sched-messaging 2913016 27.18 509.231 ms sched-messaging 2913024 27.18 509.108 ms sched-messaging 2912999 21.79 407.929 ms sched-messaging 2913000 21.78 408.045 ms sched-messaging 2912998 21.75 407.579 ms sched-messaging 2912993 21.69 406.166 ms sched-messaging 2912991 21.59 404.378 ms sched-messaging 2912992 21.57 403.845 ms sched-messaging 2913005 21.56 403.715 ms sched-messaging 2913001 21.55 403.803 ms sched-messaging 2912990 21.54 403.601 ms sched-messaging 2912994 21.52 403.087 ms sched-messaging 2912995 21.49 402.421 ms sched-messaging 2912996 21.48 402.666 ms sched-messaging 2912989 21.46 402.303 ms sched-messaging 2913003 21.46 402.034 ms sched-messaging 2912988 21.44 401.820 ms sched-messaging 2913004 21.37 400.242 ms sched-messaging 2912987 21.28 398.512 ms sched-messaging 2913002 21.27 398.759 ms sched-messaging 2912997 21.27 398.518 ms sched-messaging 2913006 21.23 397.888 ms sched-messaging 0 18.89 353.061 ms swapper/3 0 18.89 353.026 ms swapper/9 0 18.26 341.190 ms swapper/6 0 18.25 341.048 ms swapper/4 0 18.13 338.844 ms swapper/10 0 18.12 338.686 ms swapper/1 0 18.05 337.333 ms swapper/11 0 17.92 334.903 ms swapper/7 0 17.80 332.691 ms swapper/5 0 17.38 324.762 ms swapper/8 0 17.29 323.102 ms swapper/0 0 16.89 315.630 ms swapper/2 2912984 2.10 39.452 ms perf 2912985 0.73 14.004 ms sched-messaging 660381 0.14 3.527 ms containerd 3006112 0.07 1.402 ms redis-server 2904655 0.05 1.071 ms kworker/0:0 659822 0.03 1.729 ms containerd 659824 0.03 1.346 ms containerd 1053 0.01 0.353 ms zabbix_agentd 2895571 0.01 0.349 ms kworker/8:1 10 0.00 0.535 ms rcu_sched 2912192 0.00 0.272 ms kworker/u24:2 2903540 0.00 0.182 ms sshd 801 0.00 0.120 ms jbd2/sda4-8 2929605 0.00 0.108 ms grpc_global_tim 2912986 0.00 0.075 ms perf 2897765 0.00 0.073 ms kworker/7:1 2912817 0.00 0.070 ms kworker/2:1 391756 0.00 0.067 ms grpc_global_tim 2901459 0.00 0.056 ms kworker/3:0 2908185 0.00 0.052 ms kworker/10:1 2901521 0.00 0.050 ms kworker/6:1 2902444 0.00 0.046 ms kworker/5:1 2898513 0.00 0.041 ms kworker/1:1 2912280 0.00 0.039 ms kworker/11:3 1057 0.00 0.037 ms zabbix_agentd 2908010 0.00 0.037 ms kworker/9:3 2912951 0.00 0.036 ms kworker/4:3 793 0.00 0.027 ms multipathd 42 0.00 0.023 ms ksoftirqd/5 9 0.00 0.022 ms ksoftirqd/0 24 0.00 0.019 ms ksoftirqd/2 59 0.00 0.019 ms migration/8 2929607 0.00 0.018 ms wecode-db 29 0.00 0.012 ms migration/3 11 0.00 0.012 ms migration/0 65 0.00 0.012 ms migration/9 17 0.00 0.011 ms migration/1 71 0.00 0.011 ms migration/10 53 0.00 0.011 ms migration/7 23 0.00 0.011 ms migration/2 47 0.00 0.011 ms migration/6 789 0.00 0.010 ms multipathd 35 0.00 0.010 ms migration/4 480 0.00 0.009 ms kworker/4:1H 41 0.00 0.008 ms migration/5 54 0.00 0.006 ms ksoftirqd/7 36 0.00 0.005 ms ksoftirqd/4 72 0.00 0.005 ms ksoftirqd/10 66 0.00 0.005 ms ksoftirqd/9 30 0.00 0.004 ms ksoftirqd/3 2898362 0.00 0.003 ms kworker/u24:0 # perf kwork top -C 2,4,5 Total : 5604.885 ms, 3 cpus %Cpu(s): 17.65% id, 0.00% hi, 0.09% si %Cpu2 [|||||||||||||||||||||||| 83.00%] %Cpu4 [|||||||||||||||||||||||| 81.66%] %Cpu5 [|||||||||||||||||||||||| 82.10%] PID %CPU RUNTIME COMMMAND ---------------------------------------------------- 0 18.25 341.048 ms swapper/4 0 17.80 332.691 ms swapper/5 0 16.89 315.630 ms swapper/2 2913012 8.99 168.201 ms sched-messaging 2913021 8.74 163.456 ms sched-messaging 2913026 8.34 156.120 ms sched-messaging 2913010 8.14 152.372 ms sched-messaging 2913007 7.74 144.754 ms sched-messaging 2913016 7.42 138.977 ms sched-messaging 2913022 7.28 136.279 ms sched-messaging 2913013 7.00 130.894 ms sched-messaging 2913019 6.96 130.455 ms sched-messaging 2913023 6.91 129.364 ms sched-messaging 2913008 6.47 121.331 ms sched-messaging 2913018 6.47 121.124 ms sched-messaging 2912994 6.42 120.213 ms sched-messaging 2913025 6.42 120.140 ms sched-messaging 2913020 6.37 119.386 ms sched-messaging 2913011 6.35 118.921 ms sched-messaging 2913014 6.24 116.779 ms sched-messaging 2913009 6.01 112.661 ms sched-messaging 2913005 5.96 111.587 ms sched-messaging 2913003 5.94 111.142 ms sched-messaging 2913024 5.87 109.876 ms sched-messaging 2912988 5.84 109.396 ms sched-messaging 2912987 5.80 108.550 ms sched-messaging 2912990 5.51 103.322 ms sched-messaging 2912993 5.45 102.045 ms sched-messaging 2912996 5.42 101.622 ms sched-messaging 2913006 5.42 101.592 ms sched-messaging 2913000 5.41 101.511 ms sched-messaging 2913002 5.41 101.420 ms sched-messaging 2912997 5.40 101.315 ms sched-messaging 2913004 5.33 99.872 ms sched-messaging 2913015 5.29 99.252 ms sched-messaging 2913017 5.22 97.822 ms sched-messaging 2912991 5.11 95.773 ms sched-messaging 2912992 5.11 95.579 ms sched-messaging 2913001 5.07 95.033 ms sched-messaging 2912989 4.93 92.425 ms sched-messaging 2912995 4.85 90.892 ms sched-messaging 2912998 4.78 89.617 ms sched-messaging 2912999 4.56 85.576 ms sched-messaging 3006112 0.07 1.402 ms redis-server 660381 0.02 0.566 ms containerd 2912984 0.02 0.452 ms perf 659824 0.01 0.369 ms containerd 659822 0.00 0.316 ms containerd 10 0.00 0.176 ms rcu_sched 801 0.00 0.120 ms jbd2/sda4-8 2912985 0.00 0.107 ms sched-messaging 2912986 0.00 0.075 ms perf 2912817 0.00 0.070 ms kworker/2:1 2912192 0.00 0.056 ms kworker/u24:2 2929605 0.00 0.046 ms grpc_global_tim 2902444 0.00 0.046 ms kworker/5:1 2912951 0.00 0.036 ms kworker/4:3 42 0.00 0.023 ms ksoftirqd/5 24 0.00 0.019 ms ksoftirqd/2 23 0.00 0.011 ms migration/2 35 0.00 0.010 ms migration/4 480 0.00 0.009 ms kworker/4:1H 41 0.00 0.008 ms migration/5 36 0.00 0.005 ms ksoftirqd/4 # perf kwork top -n perf Total : 22419.068 ms, 12 cpus %Cpu(s): 17.99% id, 0.00% hi, 0.09% si %Cpu0 [ 0.00%] %Cpu1 [ 0.00%] %Cpu2 [ 0.02%] %Cpu3 [ 0.00%] %Cpu4 [ 0.00%] %Cpu5 [ 0.00%] %Cpu6 [ 0.00%] %Cpu7 [ 0.00%] %Cpu8 [ 0.03%] %Cpu9 [ 0.09%] %Cpu10 [ 0.00%] %Cpu11 [ 1.96%] PID %CPU RUNTIME COMMMAND ---------------------------------------------------- 2912984 2.10 39.452 ms perf 2912986 0.00 0.075 ms perf # perf kwork top -s tid -n sched-messaging Total : 22419.068 ms, 12 cpus %Cpu(s): 17.99% id, 0.00% hi, 0.09% si %Cpu0 [|||||||||||||||||||||||| 81.80%] %Cpu1 [|||||||||||||||||||||||| 81.65%] %Cpu2 [|||||||||||||||||||||||| 82.88%] %Cpu3 [|||||||||||||||||||||||| 80.96%] %Cpu4 [|||||||||||||||||||||||| 81.64%] %Cpu5 [|||||||||||||||||||||||| 82.04%] %Cpu6 [|||||||||||||||||||||||| 81.63%] %Cpu7 [|||||||||||||||||||||||| 81.97%] %Cpu8 [|||||||||||||||||||||||| 82.43%] %Cpu9 [|||||||||||||||||||||||| 80.86%] %Cpu10 [|||||||||||||||||||||||| 81.72%] %Cpu11 [||||||||||||||||||||||| 79.89%] PID %CPU RUNTIME COMMMAND ---------------------------------------------------- 2912985 0.04 1.111 ms sched-messaging 2912987 21.28 398.512 ms sched-messaging 2912988 21.44 401.820 ms sched-messaging 2912989 21.46 402.303 ms sched-messaging 2912990 21.54 403.601 ms sched-messaging 2912991 21.59 404.378 ms sched-messaging 2912992 21.57 403.845 ms sched-messaging 2912993 21.69 406.166 ms sched-messaging 2912994 21.52 403.087 ms sched-messaging 2912995 21.49 402.421 ms sched-messaging 2912996 21.48 402.666 ms sched-messaging 2912997 21.27 398.518 ms sched-messaging 2912998 21.75 407.579 ms sched-messaging 2912999 21.79 407.929 ms sched-messaging 2913000 21.78 408.045 ms sched-messaging 2913001 21.55 403.803 ms sched-messaging 2913002 21.27 398.759 ms sched-messaging 2913003 21.46 402.034 ms sched-messaging 2913004 21.37 400.242 ms sched-messaging 2913005 21.56 403.715 ms sched-messaging 2913006 21.23 397.888 ms sched-messaging 2913007 27.48 514.411 ms sched-messaging 2913008 27.54 515.447 ms sched-messaging 2913009 27.30 510.997 ms sched-messaging 2913010 27.50 514.890 ms sched-messaging 2913011 27.32 511.632 ms sched-messaging 2913012 27.30 511.138 ms sched-messaging 2913013 27.30 511.109 ms sched-messaging 2913014 27.32 511.381 ms sched-messaging 2913015 27.36 512.563 ms sched-messaging 2913016 27.18 509.231 ms sched-messaging 2913017 27.56 516.273 ms sched-messaging 2913018 27.56 516.152 ms sched-messaging 2913019 27.25 510.488 ms sched-messaging 2913020 27.20 509.677 ms sched-messaging 2913021 27.23 509.661 ms sched-messaging 2913022 27.19 509.061 ms sched-messaging 2913023 27.21 509.400 ms sched-messaging 2913024 27.18 509.108 ms sched-messaging 2913025 27.62 516.976 ms sched-messaging 2913026 27.35 512.198 ms sched-messaging # perf kwork top -b Starting trace, Hit to stop and report ^C Total : 89209.004 ms, 4 cpus %Cpu(s): 13.47% id, 0.01% hi, 0.24% si %Cpu0 [||||||||||||||||||||||||| 86.08%] %Cpu1 [|||||||||||||||||||||||||| 87.08%] %Cpu2 [||||||||||||||||||||||||| 86.10%] %Cpu3 [||||||||||||||||||||||||| 85.86%] PID SPID %CPU RUNTIME COMMMAND ------------------------------------------------------------- 0 0 13.86 3092.482 ms [swapper/3] 0 0 13.71 3057.756 ms [swapper/0] 0 0 13.65 3044.987 ms [swapper/2] 0 0 12.63 2818.079 ms [swapper/1] 320 320 1.32 295.427 ms bash 414 320 1.09 247.658 ms sched-messaging 678 320 1.09 246.881 ms sched-messaging 354 320 1.09 246.683 ms sched-messaging 409 320 1.08 246.839 ms sched-messaging 554 320 1.07 243.045 ms sched-messaging 405 320 1.04 237.340 ms sched-messaging 525 320 1.04 235.718 ms sched-messaging 486 320 1.03 235.369 ms sched-messaging 714 320 1.03 235.142 ms sched-messaging 435 320 1.03 233.290 ms sched-messaging 408 320 1.03 231.687 ms sched-messaging 716 320 1.02 233.513 ms sched-messaging 453 320 1.02 233.181 ms sched-messaging 522 320 1.02 230.101 ms sched-messaging 651 320 1.02 229.554 ms sched-messaging 418 320 1.01 231.359 ms sched-messaging 644 320 1.01 229.848 ms sched-messaging 535 320 1.01 229.655 ms sched-messaging 536 320 1.01 229.147 ms sched-messaging 410 320 1.01 227.700 ms sched-messaging 689 320 1.00 227.988 ms sched-messaging 412 320 1.00 227.052 ms sched-messaging 489 320 1.00 226.374 ms sched-messaging 521 320 1.00 225.499 ms sched-messaging 530 320 1.00 225.262 ms sched-messaging 681 320 1.00 225.187 ms sched-messaging 415 320 0.99 225.714 ms sched-messaging 643 320 0.99 225.090 ms sched-messaging 325 320 0.99 223.385 ms sched-messaging 498 320 0.99 222.936 ms sched-messaging 413 320 0.98 225.213 ms sched-messaging 645 320 0.98 223.211 ms sched-messaging 544 320 0.98 222.714 ms sched-messaging 441 320 0.98 222.590 ms sched-messaging 697 320 0.98 222.426 ms sched-messaging 523 320 0.98 221.841 ms sched-messaging 402 320 0.98 221.776 ms sched-messaging Yang Jihong (16): perf kwork: Fix incorrect and missing free atom in work_push_atom() perf kwork: Add the supported subcommands to the document perf kwork: Set ordered_events for perf_tool perf kwork: Add `kwork` and `src_type` to work_init() for struct kwork_class perf kwork: Overwrite original atom in the list when a new atom is pushed. perf kwork: Set default events list if not specified in setup_event_list() perf kwork: Add sched record support perf kwork: Add `root` parameter to work_sort() perf kwork: Implement perf kwork top perf evsel: Add evsel__intval_common() helper perf kwork top: Add statistics on hardirq event support perf kwork top: Add statistics on softirq event support perf kwork top: Add -C/--cpu -i/--input -n/--name -s/--sort --time options perf kwork top: Implements BPF-based cpu usage statistics perf kwork top: Add BPF-based statistics on hardirq event support perf kwork top: Add BPF-based statistics on softirq event support tools/perf/Documentation/perf-kwork.txt | 38 +- tools/perf/Makefile.perf | 2 +- tools/perf/builtin-kwork.c | 758 +++++++++++++++++++++-- tools/perf/util/Build | 1 + tools/perf/util/bpf_kwork_top.c | 308 +++++++++ tools/perf/util/bpf_skel/kwork_top.bpf.c | 338 ++++++++++ tools/perf/util/evsel.c | 13 + tools/perf/util/evsel.h | 2 + tools/perf/util/kwork.h | 61 +- 9 files changed, 1472 insertions(+), 49 deletions(-) create mode 100644 tools/perf/util/bpf_kwork_top.c create mode 100644 tools/perf/util/bpf_skel/kwork_top.bpf.c -- 2.30.GIT