From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-10.1 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 99EE0C433DF for ; Wed, 24 Jun 2020 15:33:22 +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 68B37206FA for ; Wed, 24 Jun 2020 15:33:22 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="SLUDmarG" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 68B37206FA 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+qemu-devel=archiver.kernel.org@nongnu.org Received: from localhost ([::1]:49846 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1jo7Or-00060S-MA for qemu-devel@archiver.kernel.org; Wed, 24 Jun 2020 11:33:21 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:58122) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1jo7Nd-0004op-Ml for qemu-devel@nongnu.org; Wed, 24 Jun 2020 11:32:05 -0400 Received: from mail-wr1-x444.google.com ([2a00:1450:4864:20::444]:43886) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1jo7Nb-0000H7-Le for qemu-devel@nongnu.org; Wed, 24 Jun 2020 11:32:05 -0400 Received: by mail-wr1-x444.google.com with SMTP id j4so239403wrp.10 for ; Wed, 24 Jun 2020 08:32:03 -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=TArnMat3Ju35uYmx6r3OwOxR+VLxrI0NAkcmv5YaMzE=; b=SLUDmarGXnbBCS5mX/u5Pac8ZP0idNHHapGfx9wZ8CcvYYqqPLaV743ZR2G5tHgGnW jCj6IulBfrLgO7ZLu/fadR+LE6bQUI+/kwRI+mZ7T5Bo8Av67/mkhct6NfFsqCtgvoEf 33uU0Gl8bL7h9bvOpyhOdIvyCVN0sFzjVHPnH3YoDL+t88svrBAnXd0BRweIau1H/ydq 39m2adjuWZXLBjHDZXyfbb/ElE1lO379jhDPqNUfjdNHHOen0fqJk5+uYH6GT+k1xPoa 8nDm+5mEzvQuCPRkwBB8D8S5YTA5u3AiRxRc1K3ArzpTOA6eq7NJQ1bC5BMh61vcfMHm DVYg== 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=TArnMat3Ju35uYmx6r3OwOxR+VLxrI0NAkcmv5YaMzE=; b=ZDqpToJPrZqMXf6BjSWRBMiFC+8oNtbm0z+k5O31DppGwzqzVHHCYm+xT+PT0BYlJC fcibktGHPmGFFgO3sGfvd15tl2aU2Gp0vMk6qMkc1LVnzcJr9L9zM4A8qf6a9Wx5G/Ew MvOac/VGJMcja4ikzdE6F4X6g7/A07wIJLkCFZmFsYpWEcT+8RQE3XqPK1VQw3VGtZCE AJtUQlwn9AtlfSOIyF+GMFjWUmpq8s512VqtOoeGi5nzvzNSRnG0wmp4rfgN0+6+b2v/ 9PKqkXJ34NKnS8S2NI7ruvGPrgng70UsDMGjLAsLdx4u4eqxHQUb1UE3EvlYKEtibVju McdA== X-Gm-Message-State: AOAM531Kg8ij3G7vUGA2kISz9mSz69fItlMd0oReuxt9kdWwB0V5P2pE OnnReQJcAnQdrN3SEYe0AoJqGAsV X-Google-Smtp-Source: ABdhPJxwk81LN1LOetlGly/C/bZr5jEBCxCzuvXBfdjLJc4UAuSfaT3ESPX/qx28wu4bGx/B0w/Rbw== X-Received: by 2002:a5d:6150:: with SMTP id y16mr33949474wrt.219.1593012722020; Wed, 24 Jun 2020 08:32:02 -0700 (PDT) Received: from AK-L.domain.name ([197.58.65.131]) by smtp.gmail.com with ESMTPSA id b184sm2011299wmc.20.2020.06.24.08.32.00 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 24 Jun 2020 08:32:01 -0700 (PDT) From: Ahmed Karaman To: qemu-devel@nongnu.org, aleksandar.qemu.devel@gmail.com, alex.bennee@linaro.org, eblake@redhat.com, rth@twiddle.net, ldoktor@redhat.com, ehabkost@redhat.com, crosa@redhat.com Subject: [PATCH v3 1/3] scripts/performance: Add topN_perf.py script Date: Wed, 24 Jun 2020 17:31:40 +0200 Message-Id: <20200624153142.13247-2-ahmedkhaledkaraman@gmail.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20200624153142.13247-1-ahmedkhaledkaraman@gmail.com> References: <20200624153142.13247-1-ahmedkhaledkaraman@gmail.com> Received-SPF: pass client-ip=2a00:1450:4864:20::444; envelope-from=ahmedkhaledkaraman@gmail.com; helo=mail-wr1-x444.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: Ahmed Karaman Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" 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 Caller ---- ---------- ------------------------- ------------------------- 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 --- scripts/performance/topN_perf.py | 142 +++++++++++++++++++++++++++++++ 1 file changed, 142 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 0000000000..d2b939c375 --- /dev/null +++ b/scripts/performance/topN_perf.py @@ -0,0 +1,142 @@ +#!/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 = subprocess.run(["which", "perf"], stdout=subprocess.DEVNULL) +if check_perf.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 +""" +) + +# Run perf record +perf_record = subprocess.run((["perf", "record"] + command), + stdout=subprocess.DEVNULL, stderr=subprocess.PIPE) +if perf_record.returncode: + os.unlink('perf.data') + sys.exit(perf_record.stderr.decode("utf-8")) + +# Save perf report output to perf_report.out +with open("perf_report.out", "w") as output: + perf_report = subprocess.run( + ["perf", "report", "--stdio"], stdout=output, stderr=subprocess.PIPE) + if perf_report.returncode: + os.unlink('perf.data') + output.close() + os.unlink('perf_report.out') + sys.exit(perf_report.stderr.decode("utf-8")) + +# Read the reported data to functions[] +functions = [] +with open("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', + 'Caller', + '-' * 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_caller = ' '.join(function_data[2:-2]) + print('{:>4} {:>10} {:<30} {}'.format(index, + function_percentage, + function_name, + function_caller)) + +# Remove intermediate files +os.unlink('perf.data') +os.unlink('perf_report.out') -- 2.17.1