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AFNElJ/KEuG+imPvHYdc9Ocd7p0ZgmXXqJzPa3e+lFBM0jrAELHX7Ga/vqmtuGZbK0dmEJ6XwUyTZOQped5Ai6gczpoi@vger.kernel.org X-Gm-Message-State: AOJu0YwBPP40OwW2shFa7OvVgvnFDPjhyRE7TpCzu8QYVFOWxKCld0WH xggh5SfanTpRzmlJDXTUsS19gBzbX1EbVHCHr4BxfI6EPKq6yotjjjdxt8FBCyoEGWJ8FEGJwoo 90kvhYazr9A== X-Received: from dybml37.prod.google.com ([2002:a05:7301:1525:b0:2db:47a8:4b3c]) (user=irogers job=prod-delivery.src-stubby-dispatcher) by 2002:a05:7300:72cc:b0:2cb:8d2f:e247 with SMTP id 5a478bee46e88-2e478839116mr5041963eec.13.1776643226195; Sun, 19 Apr 2026 17:00:26 -0700 (PDT) Date: Sun, 19 Apr 2026 16:58:40 -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: <20260419235911.2186050-29-irogers@google.com> Subject: [PATCH v1 28/58] perf syscall-counts-by-pid: Port syscall-counts-by-pid 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-by-pid.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 3.8x 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-by-pid.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: comm [pid]/syscalls count --------------------------------------- ---------- perf [3886080] 1 538989 16 32 203 17 3 2 257 1 204 1 15 1 0 1 perf [3886082] 7 1 real 0m3.852s user 0m3.512s sys 0m0.336s $ time python3 tools/perf/python/syscall-counts-by-pid.py perf Warning: 1 out of order events recorded. syscall events for perf: comm [pid]/syscalls count --------------------------------------- ----------- perf [3886080] write 538989 ioctl 32 sched_setaffinity 17 close 2 openat 1 sched_getaffinity 1 rt_sigreturn 1 read 1 perf [3886082] poll 1 real 0m1.011s user 0m0.963s sys 0m0.048s ``` Signed-off-by: Ian Rogers --- tools/perf/python/syscall-counts-by-pid.py | 57 ++++++++++++++++++++++ 1 file changed, 57 insertions(+) create mode 100755 tools/perf/python/syscall-counts-by-pid.py diff --git a/tools/perf/python/syscall-counts-by-pid.py b/tools/perf/python/syscall-counts-by-pid.py new file mode 100755 index 000000000000..a5d91060b18d --- /dev/null +++ b/tools/perf/python/syscall-counts-by-pid.py @@ -0,0 +1,57 @@ +#!/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(lambda: defaultdict(lambda: 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"{'comm [pid]/syscalls':<40} {'count':>10}") + print("---------------------------------------- -----------") + + comm_keys = syscalls.keys() + for comm in comm_keys: + pid_keys = syscalls[comm].keys() + for pid in pid_keys: + print(f"\n{comm} [{pid}]") + id_keys = syscalls[comm][pid].keys() + for id, val in sorted(syscalls[comm][pid].items(), + key=lambda kv: (kv[1], kv[0]), reverse=True): + print(f" {perf.syscall_name(id):<38} {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 + pid = sample.sample_pid + comm = session.process(pid).comm() + if for_comm and comm != for_comm: + return + syscalls[comm][pid][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