Re: [PATCH v2][RFC] ftrace: function oprofiler

[Arjan van de Ven]

On Sun, 26 Oct 2008 11:35:57 +0100
Peter Zijlstra <peterz@xxxxxxxxxxxxx> 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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