linux-kernel - Re: CFS review

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Date:	Wed, 1 Aug 2007 17:07:42 +0200
From:	Ingo Molnar <mingo@...e.hu>
To:	Roman Zippel <zippel@...ux-m68k.org>
Cc:	Mike Galbraith <efault@....de>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	linux-kernel@...r.kernel.org
Subject: Re: CFS review

* Roman Zippel <zippel@...ux-m68k.org> wrote:

> > Please also send me the output of this script:
> > 
> >   http://people.redhat.com/mingo/cfs-scheduler/tools/cfs-debug-info.sh
> 
> Send privately.

thanks. Just to make sure, while you said that your TSC was off on that 
laptop, the bootup log of yours suggests a working TSC:

  Time: tsc clocksource has been installed.

and still your fl.c testcases produces the top output that you've 
reported in your first mail? If so then this could be a regression. Or 
did you turn off the tsc manually via notsc? (or was it with a different 
.config or on a different machine)? Please help us figure this out 
exactly, we dont want a real regression go unnoticed.

If you can reproduce that problem with a working TSC then please 
generate a second cfs-debug-info.sh snapshot _while_ your fl+l workload 
is running and send that to me (i'll reply back to it publicly). Thanks,

	Ingo
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