Messages in this thread |  | | From | Namhyung Kim <> | Subject | Re: [PATCH v2 2/3] perf script: Print comm, fork and exit events also | Date | Tue, 19 Nov 2013 09:18:20 +0900 |
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Hi Arnaldo,
On Mon, 18 Nov 2013 10:57:00 -0300, Arnaldo Carvalho de Melo wrote: > Em Mon, Nov 18, 2013 at 02:34:53PM +0900, Namhyung Kim escreveu: >> If --show-task option is given, also print internal COMM, FORK and >> EXIT events. It would be helpful for debugging. > > Humm, --show-task-events is clearer albeit long :-\ With shell > completion shouldn't be an issue tho.
Okay, will change.
> > Also, can't we use: perf_event__fprintf_{mmap,comm,task}?
We can do it. The output will look like below if we use perf_event__fprintf():
swapper 0 [009] 3350640.335261: sched:sched_switch: prev_comm=swapper/9 sleep 9486 [009] 3350640.335509: PERF_RECORD_COMM: sleep:9486 sleep 9486 [009] 3350640.335806: sched:sched_stat_runtime: comm=sleep pid=9486 firefox 2635 [003] 3350641.275896: PERF_RECORD_FORK(2635:9487):(2635:2635) firefox 2635 [003] 3350641.275896: sched:sched_process_fork: comm=firefox pid=2635 sleep 9486 [009] 3350641.336009: PERF_RECORD_EXIT(9486:9486):(9486:9486)
But I'd prefer original version below since it shows the changes more intuitively, no?
Thanks, Namhyung
> >> $ perf script --show-task >> ... >> swapper 0 [009] 3350640.335261: sched:sched_switch: prev_comm=swapper/9 >> sleep 9486 [009] 3350640.335509: comm: perf --> sleep (9486) >> sleep 9486 [009] 3350640.335806: sched:sched_stat_runtime: comm=sleep pid=9486 >> firefox 2635 [003] 3350641.275896: fork: firefox (2635 --> 9487) >> firefox 2635 [003] 3350641.275896: sched:sched_process_fork: comm=firefox pid=2635 >> sleep 9486 [009] 3350641.336009: exit: sleep (9486)
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