Messages in this thread | | | Date | Sun, 26 Oct 2008 07:20:41 -0700 | From | Arjan van de Ven <> | Subject | Re: [PATCH v2][RFC] ftrace: function oprofiler |
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On Sun, 26 Oct 2008 11:35:57 +0100 Peter Zijlstra <peterz@infradead.org> wrote:
> On Sat, 2008-10-25 at 20:55 -0400, Steven Rostedt wrote: > > > This is a function profiler to count the number of times a function > > is hit. > > I have to ask, _why_? > > It seems like a nice enough gimmick, but is this information actually > useful?
yes.
If you are diagnosing "my system suddenly became slow", and if you have a baseline, a fingerprint like this can be used by less-trained people to look up the next steps in the diagnostics.
-- Arjan van de Ven Intel Open Source Technology Centre For development, discussion and tips for power savings, visit http://www.lesswatts.org
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