Arnaldo Carvalho de Melo | 877108e | 2011-01-29 15:44:29 -0200 | [diff] [blame] | 1 | #! /usr/bin/python |
| 2 | # -*- python -*- |
| 3 | # -*- coding: utf-8 -*- |
| 4 | # twatch - Experimental use of the perf python interface |
| 5 | # Copyright (C) 2011 Arnaldo Carvalho de Melo <acme@redhat.com> |
| 6 | # |
| 7 | # This application is free software; you can redistribute it and/or |
| 8 | # modify it under the terms of the GNU General Public License |
| 9 | # as published by the Free Software Foundation; version 2. |
| 10 | # |
| 11 | # This application is distributed in the hope that it will be useful, |
| 12 | # but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 13 | # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| 14 | # General Public License for more details. |
| 15 | |
| 16 | import perf |
| 17 | |
| 18 | def main(): |
| 19 | cpus = perf.cpu_map() |
| 20 | threads = perf.thread_map() |
| 21 | evsel = perf.evsel(task = 1, comm = 1, mmap = 0, |
| 22 | wakeup_events = 1, sample_period = 1, |
| 23 | sample_id_all = 1, |
| 24 | sample_type = perf.SAMPLE_PERIOD | perf.SAMPLE_TID | perf.SAMPLE_CPU | perf.SAMPLE_TID) |
| 25 | evsel.open(cpus = cpus, threads = threads); |
Arnaldo Carvalho de Melo | 7e2ed09 | 2011-01-30 11:59:43 -0200 | [diff] [blame] | 26 | evlist = perf.evlist(cpus, threads) |
Arnaldo Carvalho de Melo | 877108e | 2011-01-29 15:44:29 -0200 | [diff] [blame] | 27 | evlist.add(evsel) |
Arnaldo Carvalho de Melo | 7e2ed09 | 2011-01-30 11:59:43 -0200 | [diff] [blame] | 28 | evlist.mmap() |
Arnaldo Carvalho de Melo | 877108e | 2011-01-29 15:44:29 -0200 | [diff] [blame] | 29 | while True: |
| 30 | evlist.poll(timeout = -1) |
| 31 | for cpu in cpus: |
| 32 | event = evlist.read_on_cpu(cpu) |
| 33 | if not event: |
| 34 | continue |
| 35 | print "cpu: %2d, pid: %4d, tid: %4d" % (event.sample_cpu, |
| 36 | event.sample_pid, |
| 37 | event.sample_tid), |
| 38 | print event |
| 39 | |
| 40 | if __name__ == '__main__': |
| 41 | main() |