On Sun, Apr 12, 2009 at 02:45:38PM -0700, Stewart W. Putnam wrote:
> Updating my driver from 32 bit etch to 64 bit lenny I've found similar  
> 'errors' in reported % cpu values.
Thankyou very much for your analysis.  I too had it vaguely down to
"something is wrong in the kernel" but you've gone much further than
that.

> I think it affects both 32 bit and 64 bit kernels, both distribution  
> kernels and my custom kernels, and that magnitude and consistency of the  
> errors vary with kernel .config ( processor type and features,  
> scheduler? cpu-freq scaling ? powernow ? virtialization ? guest os? )  
> options.  I do not see a clear pattern to the error.
Nor do I.  You could be onto something about what is configured or, for
modules, loaded though.  It would explain why I am seeing the "right"
numbers and you and others are not.

It could also be related to #517108 where the "cpu numbers" are 0.
4576 (mplayer) S 4210 4576 4210 34817 4576 4202496 4784 0 0 0 0 0 0 0 20 0 1
                                                              ^^^^^^^
Are you getting sensible figures for these numbers in /proc/<pid>/stat?

 - Craig
-- 
Craig Small      GnuPG:1C1B D893 1418 2AF4 45EE  95CB C76C E5AC 12CA DFA5
http://www.enc.com.au/                             csmall at : enc.com.au
http://www.debian.org/          Debian GNU/Linux, software should be Free 



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