linux-kernel - Re: [RFC 0/4] perf sched: Introduce schedstat tool

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Date: Thu, 9 May 2024 11:32:12 +0530
From: Ravi Bangoria <ravi.bangoria@....com>
To: Namhyung Kim <namhyung@...nel.org>
Cc: peterz@...radead.org, mingo@...hat.com, acme@...nel.org,
 irogers@...gle.com, swapnil.sapkal@....com, mark.rutland@....com,
 alexander.shishkin@...ux.intel.com, jolsa@...nel.org, rostedt@...dmis.org,
 vincent.guittot@...aro.org, bristot@...hat.com, adrian.hunter@...el.com,
 james.clark@....com, kan.liang@...ux.intel.com, gautham.shenoy@....com,
 kprateek.nayak@....com, juri.lelli@...hat.com, yangjihong@...edance.com,
 linux-kernel@...r.kernel.org, linux-perf-users@...r.kernel.org,
 santosh.shukla@....com, ananth.narayan@....com, sandipan.das@....com,
 Ravi Bangoria <ravi.bangoria@....com>
Subject: Re: [RFC 0/4] perf sched: Introduce schedstat tool

>> USAGE
>> -----
>>
>>   # perf sched schedstat record
>>   # perf sched schedstat report
> 
> Hmm. I think we can remove the duplication in 'sched'. :)

You mean `perf sched stat record/report` ?

> Given you are thinking of taskstat, how about making it
> 'cpustat' instead?

Sure. How about:

  # perf sched stat --cpu --task record
  # perf sched stat report

> Also I think it'd be easier if you also provide 'live' mode so that
> users can skip record + report steps and run the workload
> directly like uftrace does. :)
> 
> Something like this
> 
>   # perf sched cpustat  myworkload
>   (result here ...)

Sure.

Thanks for the feedback,
Ravi