On 04/09/2012 09:24 PM, Pantelis Antoniou wrote:
Here's a updated patch for builtin-sched.c that should fix your issues.
Now when you issue list a field will show the amount of nsecs the
task was burning cycles.
It should also fix the crash you've encountered.
1) IIUC, 'perf sched spr-replay -l' should lists the tasks only, but it looks
like it tries to execute something just after displaying the list. While this
command is running, I can see a lot of perf processes, like:
root 2846 28.0 1.8 30552 19328 pts/0 S+ 07:51 0:01 perf sched
spr-replay -l
root 2847 36.6 1.4 30552 14572 pts/0 R+ 07:51 0:01 perf sched
spr-replay -l
root 2848 11.6 1.4 30552 14580 pts/0 S+ 07:51 0:00 perf sched
spr-replay -l
root 2849 36.3 1.4 30552 14548 pts/0 R+ 07:51 0:01 perf sched
spr-replay -l
root 2850 13.0 1.4 30552 14576 pts/0 S+ 07:51 0:00 perf sched
spr-replay -l
root 2851 7.3 1.4 30552 14584 pts/0 S+ 07:51 0:00 perf sched
spr-replay -l
root 2852 0.0 1.4 30552 14584 pts/0 S+ 07:51 0:00 perf sched
spr-replay -l
root 2853 5.0 1.4 30552 14588 pts/0 S+ 07:51 0:00 perf sched
spr-replay -l
root 2854 0.0 1.4 30552 14576 pts/0 S+ 07:51 0:00 perf sched
spr-replay -l
root 2855 0.0 1.4 30552 14576 pts/0 S+ 07:51 0:00 perf sched
spr-replay -l
root 2856 0.0 1.4 30552 14576 pts/0 S+ 07:51 0:00 perf sched
spr-replay -l
root 2857 0.0 1.4 30552 14576 pts/0 S+ 07:51 0:00 perf sched
spr-replay -l
root 2858 37.3 1.4 30552 14548 pts/0 R+ 07:51 0:01 perf sched
spr-replay -l
root 2859 37.3 1.4 30552 14548 pts/0 R+ 07:51 0:01 perf sched
spr-replay -l
root 2860 35.3 1.4 30552 14548 pts/0 R+ 07:51 0:01 perf sched
spr-replay -l
root 2861 37.3 1.4 30552 14548 pts/0 R+ 07:51 0:01 perf sched
spr-replay -l
And:
perf: builtin-sched.c:2621: execute_wait_id: Assertion `ret == 0 || ret == 11'
failed.
from one of them.
2) When I'm trying to generate SPR from an interesting process with 'perf sched
spr-replay -s 2580 -g',
I got:
[testbrowser/2580]
burn 36007422086
exit 0
end
I suppose this is wrong because it means that testbrowser/2580 newer yields the
CPU until exit.
Could you try to look at my perf.data and replay testbrowser/2580? Gzipped copy
is here:
http://78.153.153.8/tmp/perf.data.gz
Thanks,
Dmitry
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