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AFNElJ9QAqbmsr7LM+Q1sfWFJ78Mi+4bcLUql9SPtPxYEptOUSYZbZJZmH9iD4moq6+pZU9b7suvSKY0kR6dGTNW+RXV@vger.kernel.org X-Gm-Message-State: AOJu0YyGqgGsEhWjS8X1fW7dTJjgAirL1pP7RP4T3PAoheKF9tnKLCiq IjRXNJHltE/cIABWYcQEibnyhstQ0Phx1w/0kcqjq+8GaTQIDarskD1FrfT3usg5DL42+sPpVDV WU2te76ziMg== X-Received: from dycnl14.prod.google.com ([2002:a05:7300:d10e:b0:2da:b59f:1e95]) (user=irogers job=prod-delivery.src-stubby-dispatcher) by 2002:a05:7300:7fa5:b0:2d9:ad46:4a92 with SMTP id 5a478bee46e88-2e478a2f27amr5951295eec.13.1776643223731; Sun, 19 Apr 2026 17:00:23 -0700 (PDT) Date: Sun, 19 Apr 2026 16:58:39 -0700 In-Reply-To: <20260419235911.2186050-1-irogers@google.com> Precedence: bulk X-Mailing-List: linux-perf-users@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: Mime-Version: 1.0 References: <20260419235911.2186050-1-irogers@google.com> X-Mailer: git-send-email 2.54.0.rc1.513.gad8abe7a5a-goog Message-ID: <20260419235911.2186050-28-irogers@google.com> Subject: [PATCH v1 27/58] perf syscall-counts: Port syscall-counts to use python module From: Ian Rogers To: Peter Zijlstra , Ingo Molnar , Arnaldo Carvalho de Melo , Namhyung Kim , Jiri Olsa , Adrian Hunter , James Clark , Alice Rogers , Suzuki K Poulose , Mike Leach , John Garry , Leo Yan , Yicong Yang , Jonathan Cameron , Nick Terrell , David Sterba , Nathan Chancellor , Nick Desaulniers , Bill Wendling , Justin Stitt , Alexandre Chartre , Dmitrii Dolgov <9erthalion6@gmail.com>, Yuzhuo Jing , Blake Jones , Changbin Du , Gautam Menghani , Wangyang Guo , Pan Deng , Zhiguo Zhou , Tianyou Li , Thomas Falcon , Athira Rajeev , Collin Funk , Dapeng Mi , Ravi Bangoria , Zecheng Li , tanze , Thomas Richter , Ankur Arora , "Tycho Andersen (AMD)" , Howard Chu , Sun Jian , Derek Foreman , Swapnil Sapkal , Anubhav Shelat , Ricky Ringler , Qinxin Xia , Aditya Bodkhe , Chun-Tse Shao , Stephen Brennan , Yang Li , Chuck Lever , Chen Ni , linux-kernel@vger.kernel.org, linux-perf-users@vger.kernel.org, coresight@lists.linaro.org, linux-arm-kernel@lists.infradead.org Cc: Ian Rogers Content-Type: text/plain; charset="UTF-8" Rewrite tools/perf/scripts/python/syscall-counts.py to use the python module and various style changes. By avoiding the overheads in the `perf script` execution the performance improves by more than 4x as shown in the following (with PYTHON_PATH and PERF_EXEC_PATH set as necessary): ``` $ perf record -e raw_syscalls:sys_enter -a sleep 1 ... $ time perf script tools/perf/scripts/python/syscall-counts.py perf Install the python-audit package to get syscall names. For example: # apt-get install python3-audit (Ubuntu) # yum install python3-audit (Fedora) etc. Press control+C to stop and show the summary Warning: 1 out of order events recorded. syscall events for perf: event count -------------------------------------- ------------ 1 538989 16 32 203 17 3 2 257 1 204 1 15 1 7 1 0 1 real 0m3.887s user 0m3.578s sys 0m0.308s $ time python3 tools/perf/python/syscall-counts.py perf Warning: 1 out of order events recorded. syscall events for perf: event count -------------------------------------- ------------ write 538989 ioctl 32 sched_setaffinity 17 close 2 openat 1 sched_getaffinity 1 rt_sigreturn 1 poll 1 read 1 real 0m0.953s user 0m0.905s sys 0m0.048s ``` Signed-off-by: Ian Rogers --- tools/perf/python/syscall-counts.py | 49 +++++++++++++++++++++++++++++ 1 file changed, 49 insertions(+) create mode 100755 tools/perf/python/syscall-counts.py diff --git a/tools/perf/python/syscall-counts.py b/tools/perf/python/syscall-counts.py new file mode 100755 index 000000000000..a2e0994ab736 --- /dev/null +++ b/tools/perf/python/syscall-counts.py @@ -0,0 +1,49 @@ +#!/usr/bin/env python3 +# SPDX-License-Identifier: GPL-2.0 +# Displays system-wide system call totals, broken down by syscall. +# If a [comm] arg is specified, only syscalls called by [comm] are displayed. + +import argparse +from collections import defaultdict +import perf + +syscalls = defaultdict(int) +for_comm = None +session = None + + +def print_syscall_totals(): + if for_comm is not None: + print(f"\nsyscall events for {for_comm}:\n") + else: + print("\nsyscall events:\n") + + print(f"{'event':<40} {'count':>10}") + print("---------------------------------------- -----------") + + for id, val in sorted(syscalls.items(), + key=lambda kv: (kv[1], kv[0]), reverse=True): + print(f"{perf.syscall_name(id):<40} {val:>10}") + + +def process_event(sample): + event_name = str(sample.evsel) + if event_name == "evsel(raw_syscalls:sys_enter)": + id = sample.id + elif event_name.startswith("evsel(syscalls:sys_enter_"): + id = sample.__syscall_nr + else: + return + if for_comm and session.process(sample.sample_pid).comm() != for_comm: + return + syscalls[id] += 1 + + +if __name__ == "__main__": + ap = argparse.ArgumentParser() + ap.add_argument("comm", nargs="?", help="Only report syscalls for comm") + args = ap.parse_args() + for_comm = args.comm + session = perf.session(perf.data("perf.data"), sample=process_event) + session.process_events() + print_syscall_totals() -- 2.54.0.rc1.513.gad8abe7a5a-goog