Re: [PATCH 0/4] perf: Teach perf tool to profile sleep times (v2)

[Andrey Wagin]

2012/8/8 Namhyung Kim <namhyung@xxxxxxxxxx>:
>>
>> $ ./perf record -e sched:sched_stat_sleep -e sched:sched_switch \
>>               -e sched:sched_process_exit -gP -o ~/perf.data.raw ~/foo

Actually this string is not completed, because sched:sched_switch
should be filtered by state.

>> [ perf record: Woken up 1 times to write data ]
>> [ perf record: Captured and wrote 0.015 MB /root/perf.data.raw (~661 samples) ]
>> $ ./perf inject -v -s -i ~/perf.data.raw -o ~/perf.data
>> $ ./perf report -i ~/perf.data
>
> The usage like this is too specific and hard to use IMHO. How about
> putting it somehow into perf sched or new command?
>
> /me don't have an idea though. :-)
>

I'm going to add a script, so the usage will look like this:
$ perf script record sched-stat -e sched:sched_stat_sleep <command>
This command will collect sched_stat_* and proper sched_switch events
$ perf script report sched-stat
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