linux-kernel - Re: Increased CPU usage after upgrading to 2.6.21

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Message-ID: <20070806183207.GB5761@ucw.cz>
Date:	Mon, 6 Aug 2007 18:32:08 +0000
From:	Pavel Machek <pavel@....cz>
To:	Gautam Iyer <gautam@...h.stanford.edu>
Cc:	linux-kernel@...r.kernel.org
Subject: Re: Increased CPU usage after upgrading to 2.6.21

Hi!

> PS: I'm using the kernel with Gentoo patchset. But I confirmed the above
>     persists with the vanilla kernels.
> 
> PPS: I also played around with the timer frequency, and premption model.
>      Would those make a difference to CPU usage?

Yes. Or rather, it will make accounting more accurate, so that you see
that 1% cpu usage, unlike previous kernels where something still ate
cpu but kernel did not know it.
							Pavel
-- 
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
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