From patchwork Sat Jun 27 19:51:41 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Aleksandar Markovic X-Patchwork-Id: 11629869 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 7CE58138C for ; Sat, 27 Jun 2020 19:55:58 +0000 (UTC) Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 532FD2071A for ; Sat, 27 Jun 2020 19:55:58 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="Yfna7c7v" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 532FD2071A Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=gmail.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=qemu-devel-bounces+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org Received: from localhost ([::1]:35270 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1jpGvd-0008TK-IL for patchwork-qemu-devel@patchwork.kernel.org; Sat, 27 Jun 2020 15:55:57 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:33772) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1jpGre-0002OH-PY for qemu-devel@nongnu.org; Sat, 27 Jun 2020 15:51:50 -0400 Received: from mail-ed1-x543.google.com ([2a00:1450:4864:20::543]:44194) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1jpGrc-0003uz-QK for qemu-devel@nongnu.org; Sat, 27 Jun 2020 15:51:50 -0400 Received: by mail-ed1-x543.google.com with SMTP id s28so9446172edw.11 for ; Sat, 27 Jun 2020 12:51:48 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:cc:subject:date:message-id:in-reply-to:references; bh=GP6FfKUQQ7/PDaeGu/ePS+hzQJumHWPaJpKy6/KoXmU=; b=Yfna7c7v8w1bOkBY9yVBj3ZVpdW+a/5pZktXOrWf/UJ6S1P9aQO9oHyh9IKJDbhVpO 0nacSqCTm0a3+FgNHJR6sduf7B1V/c6cEM6SZ/clI0m78+4GqPFJBScSn5CWZyOMim8p 7OHuTDEocz/BnTf9Vlms5T5vZ153H2E3G7I/UQA7AftpfI23keIkGI6r0muIKD8DoDq4 aOuWEWyy/DmTGLf7eodBqmvzC7WK2DMK5N4Dsc1lRIbkfJZfHLfgzW45JqaAVdWLgK7i lff17XgAp0iWRJzcTfrhCFJ4Hp0bKjkwjC3DT6Y84gCihIat81DoVebwjXn6Yk/eE4If WYNQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references; bh=GP6FfKUQQ7/PDaeGu/ePS+hzQJumHWPaJpKy6/KoXmU=; b=IPRWqAI7wwRkfTiFE90k21r0uU2v5vr77bCGLM4E2KcM6fBgJ9XE15tTe1GHloPfyj rHlAsxBtW0k+Ul1zTTce8DbYHEag7G/549+gItjcPUD5tCAJQqBMger+09i4kwNpsfOI IFYhCSeJohc3N+KlQVOfTRRV0bJ0wqO+JSFdIQ5GIeZ4fg59RBxCelbgbH39rcd6cMC/ efOVy4fjzvK1D2t9y+bpeB2sCWcY6fE8gumvWi4tVIIQ5yWGo+EuDxMH4ynqa9KUG9vm i90XCKE4yqnDoAdHQRyKJBi2rab+5GvEmaxH4YqC4FRuFprPypQcy1gOxuGW4wI8U9ak mhxQ== X-Gm-Message-State: AOAM531wRxm4h2MygeGyhojviM4B3efBryCkVdc5DuimL3JwGy9fkamY Fy06DDaMvdMCeCkYZ3RlGixcTszn X-Google-Smtp-Source: ABdhPJy2Zy+UAKz0riGAjzUMs4vqvjazCYZHzgwdHfw/6ePneD3KRSqn5xN0DqqR6X+G2CVT9dTWfg== X-Received: by 2002:a50:9e02:: with SMTP id z2mr9507208ede.87.1593287507295; Sat, 27 Jun 2020 12:51:47 -0700 (PDT) Received: from rtrkw774-lin.syrmia.com ([46.240.135.226]) by smtp.gmail.com with ESMTPSA id y11sm5298734ejw.63.2020.06.27.12.51.46 (version=TLS1_2 cipher=ECDHE-ECDSA-AES128-GCM-SHA256 bits=128/128); Sat, 27 Jun 2020 12:51:46 -0700 (PDT) From: Aleksandar Markovic To: qemu-devel@nongnu.org, peter.maydell@linaro.org Subject: [PULL 4/6] scripts/performance: Add topN_perf.py script Date: Sat, 27 Jun 2020 21:51:41 +0200 Message-Id: <1593287503-25197-5-git-send-email-aleksandar.qemu.devel@gmail.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1593287503-25197-1-git-send-email-aleksandar.qemu.devel@gmail.com> References: <1593287503-25197-1-git-send-email-aleksandar.qemu.devel@gmail.com> Received-SPF: pass client-ip=2a00:1450:4864:20::543; envelope-from=aleksandar.qemu.devel@gmail.com; helo=mail-ed1-x543.google.com X-detected-operating-system: by eggs.gnu.org: No matching host in p0f cache. That's all we know. X-Spam_score_int: -10 X-Spam_score: -1.1 X-Spam_bar: - X-Spam_report: (-1.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, FREEMAIL_FROM=0.001, PDS_OTHER_BAD_TLD=1, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, URIBL_BLOCKED=0.001 autolearn=_AUTOLEARN X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: aleksandar.qemu.devel@gmail.com Errors-To: qemu-devel-bounces+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org Sender: "Qemu-devel" From: Ahmed Karaman Syntax: topN_perf.py [-h] [-n] -- \ [] \ [] [-h] - Print the script arguments help message. [-n] - Specify the number of top functions to print. - If this flag is not specified, the tool defaults to 25. Example of usage: topN_perf.py -n 20 -- qemu-arm coulomb_double-arm Example Output: No. Percentage Name Invoked by ---- ---------- ------------------------- ------------------------- 1 16.25% float64_mul qemu-x86_64 2 12.01% float64_sub qemu-x86_64 3 11.99% float64_add qemu-x86_64 4 5.69% helper_mulsd qemu-x86_64 5 4.68% helper_addsd qemu-x86_64 6 4.43% helper_lookup_tb_ptr qemu-x86_64 7 4.28% helper_subsd qemu-x86_64 8 2.71% f64_compare qemu-x86_64 9 2.71% helper_ucomisd qemu-x86_64 10 1.04% helper_pand_xmm qemu-x86_64 11 0.71% float64_div qemu-x86_64 12 0.63% helper_pxor_xmm qemu-x86_64 13 0.50% 0x00007f7b7004ef95 [JIT] tid 491 14 0.50% 0x00007f7b70044e83 [JIT] tid 491 15 0.36% helper_por_xmm qemu-x86_64 16 0.32% helper_cc_compute_all qemu-x86_64 17 0.30% 0x00007f7b700433f0 [JIT] tid 491 18 0.30% float64_compare_quiet qemu-x86_64 19 0.27% soft_f64_addsub qemu-x86_64 20 0.26% round_to_int qemu-x86_64 Signed-off-by: Ahmed Karaman Signed-off-by: Aleksandar Markovic Reviewed-by: Aleksandar Markovic Message-Id: <20200626164546.22102-2-ahmedkhaledkaraman@gmail.com> --- scripts/performance/topN_perf.py | 149 +++++++++++++++++++++++++++++++++++++++ 1 file changed, 149 insertions(+) create mode 100755 scripts/performance/topN_perf.py diff --git a/scripts/performance/topN_perf.py b/scripts/performance/topN_perf.py new file mode 100755 index 0000000..07be195 --- /dev/null +++ b/scripts/performance/topN_perf.py @@ -0,0 +1,149 @@ +#!/usr/bin/env python3 + +# Print the top N most executed functions in QEMU using perf. +# Syntax: +# topN_perf.py [-h] [-n] -- \ +# [] \ +# [] +# +# [-h] - Print the script arguments help message. +# [-n] - Specify the number of top functions to print. +# - If this flag is not specified, the tool defaults to 25. +# +# Example of usage: +# topN_perf.py -n 20 -- qemu-arm coulomb_double-arm +# +# This file is a part of the project "TCG Continuous Benchmarking". +# +# Copyright (C) 2020 Ahmed Karaman +# Copyright (C) 2020 Aleksandar Markovic +# +# This program is free software: you can redistribute it and/or modify +# it under the terms of the GNU General Public License as published by +# the Free Software Foundation, either version 2 of the License, or +# (at your option) any later version. +# +# This program is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +# GNU General Public License for more details. +# +# You should have received a copy of the GNU General Public License +# along with this program. If not, see . + +import argparse +import os +import subprocess +import sys + + +# Parse the command line arguments +parser = argparse.ArgumentParser( + usage='topN_perf.py [-h] [-n] -- ' + ' [] ' + ' []') + +parser.add_argument('-n', dest='top', type=int, default=25, + help='Specify the number of top functions to print.') + +parser.add_argument('command', type=str, nargs='+', help=argparse.SUPPRESS) + +args = parser.parse_args() + +# Extract the needed variables from the args +command = args.command +top = args.top + +# Insure that perf is installed +check_perf_presence = subprocess.run(["which", "perf"], + stdout=subprocess.DEVNULL) +if check_perf_presence.returncode: + sys.exit("Please install perf before running the script!") + +# Insure user has previllage to run perf +check_perf_executability = subprocess.run(["perf", "stat", "ls", "/"], + stdout=subprocess.DEVNULL, + stderr=subprocess.DEVNULL) +if check_perf_executability.returncode: + sys.exit( +""" +Error: +You may not have permission to collect stats. + +Consider tweaking /proc/sys/kernel/perf_event_paranoid, +which controls use of the performance events system by +unprivileged users (without CAP_SYS_ADMIN). + + -1: Allow use of (almost) all events by all users + Ignore mlock limit after perf_event_mlock_kb without CAP_IPC_LOCK + 0: Disallow ftrace function tracepoint by users without CAP_SYS_ADMIN + Disallow raw tracepoint access by users without CAP_SYS_ADMIN + 1: Disallow CPU event access by users without CAP_SYS_ADMIN + 2: Disallow kernel profiling by users without CAP_SYS_ADMIN + +To make this setting permanent, edit /etc/sysctl.conf too, e.g.: + kernel.perf_event_paranoid = -1 + +* Alternatively, you can run this script under sudo privileges. +""" +) + +# Run perf record +perf_record = subprocess.run((["perf", "record", "--output=/tmp/perf.data"] + + command), + stdout=subprocess.DEVNULL, + stderr=subprocess.PIPE) +if perf_record.returncode: + os.unlink('/tmp/perf.data') + sys.exit(perf_record.stderr.decode("utf-8")) + +# Save perf report output to /tmp/perf_report.out +with open("/tmp/perf_report.out", "w") as output: + perf_report = subprocess.run( + ["perf", "report", "--input=/tmp/perf.data", "--stdio"], + stdout=output, + stderr=subprocess.PIPE) + if perf_report.returncode: + os.unlink('/tmp/perf.data') + output.close() + os.unlink('/tmp/perf_report.out') + sys.exit(perf_report.stderr.decode("utf-8")) + +# Read the reported data to functions[] +functions = [] +with open("/tmp/perf_report.out", "r") as data: + # Only read lines that are not comments (comments start with #) + # Only read lines that are not empty + functions = [line for line in data.readlines() if line and line[0] + != '#' and line[0] != "\n"] + +# Limit the number of top functions to "top" +number_of_top_functions = top if len(functions) > top else len(functions) + +# Store the data of the top functions in top_functions[] +top_functions = functions[:number_of_top_functions] + +# Print table header +print('{:>4} {:>10} {:<30} {}\n{} {} {} {}'.format('No.', + 'Percentage', + 'Name', + 'Invoked by', + '-' * 4, + '-' * 10, + '-' * 30, + '-' * 25)) + +# Print top N functions +for (index, function) in enumerate(top_functions, start=1): + function_data = function.split() + function_percentage = function_data[0] + function_name = function_data[-1] + function_invoker = ' '.join(function_data[2:-2]) + print('{:>4} {:>10} {:<30} {}'.format(index, + function_percentage, + function_name, + function_invoker)) + +# Remove intermediate files +os.unlink('/tmp/perf.data') +os.unlink('/tmp/perf_report.out')