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SubjectRe: [RFC][PATCH v2 5/7] taskstats: Improve cumulative CPU time accounting
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On Mon, 2010-11-15 at 19:00 +0100, Martin Schwidefsky wrote:
> On Mon, 15 Nov 2010 18:51:57 +0100
> Peter Zijlstra <a.p.zijlstra@chello.nl> wrote:
>
> > On Mon, 2010-11-15 at 18:49 +0100, Martin Schwidefsky wrote:
> > > > To what purpose?
> > >
> > > Is that a trick question? Why do we have tools like "top"? Or process
> > > accounting? The point is that the quality of the numbers we get right
> > > now is rather bad, the overhead of scanning /proc is horrendous and
> > > the 10ms granularity is rather coarse.
> >
> > But you're not just replacing top, you're adding all kinds of new
> > accounting crap all over the place.
>
> We DO replace top. Patch #7 of 7.

You _also_ replace top, but its not by far the only thing you do. If you
simply replaced top you wouldn't need to add tons of extra accounting,
would you?


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