Re: [PATCH v2 0/3] perf: introduce perf based task analyzer

[Petar Gligoric]

On Tue, Dec 06, 2022 at 10:32:35AM -0800, Namhyung Kim wrote:
> Hello,
> 
> Have you looked at 'perf sched timehist' ?
> I think it has the common functionality and can be easily extended if there's
> missing one.
> 
> Thanks,
> Namhyung
> 

Thanks for the input! For this patchset we explicitly decided against
extending "perf sched timehist" - after some pros and cons. Mainly we
didn't want to break existing programs (which might parse the output of
perf sched) and also the goal of the task-analyzer is a bit different.
E.g what will follow as a follow-up patch, is to show IRQs visually
pleasing intermixed with tasks to show potential sources of task
latency. This will be offered as an option for the task-analyzer, but
would be too much functionality for "perf sched timehist". This was the
main reason why we decided against the extension.

Best Regards,
Petar