| # twatch - Experimental use of the perf python interface |
| # Copyright (C) 2011 Arnaldo Carvalho de Melo <acme@redhat.com> |
| # This application 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; version 2. |
| # This application 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. |
| threads = perf.thread_map() |
| evsel = perf.evsel(task = 1, comm = 1, mmap = 0, |
| wakeup_events = 1, watermark = 1, |
| sample_type = perf.SAMPLE_PERIOD | perf.SAMPLE_TID | perf.SAMPLE_CPU) |
| evsel.open(cpus = cpus, threads = threads); |
| evlist = perf.evlist(cpus, threads) |
| evlist.poll(timeout = -1) |
| event = evlist.read_on_cpu(cpu) |
| print "cpu: %2d, pid: %4d, tid: %4d" % (event.sample_cpu, |
| if __name__ == '__main__': |