linux-kernel - Re: Large increase in context switch rate

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Message-ID: <20080723135443.GA20882@one.firstfloor.org>
Date:	Wed, 23 Jul 2008 15:54:43 +0200
From:	Andi Kleen <andi@...stfloor.org>
To:	"Alex Nixon (Intern)" <Alex.Nixon@...citrix.com>
Cc:	Andi Kleen <andi@...stfloor.org>,
	Jeremy Fitzhardinge <jeremy@...p.org>,
	Peter Zijlstra <peterz@...radead.org>,
	Ingo Molnar <mingo@...e.hu>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Ian Campbell <Ian.Campbell@...citrix.com>,
	Theodore Ts'o <tytso@....edu>
Subject: Re: Large increase in context switch rate

> Seems to be a mystery why that patch is (seemingly) the culprit...anyone

Yes looks weird.

> have any ideas?  Maybe there's some other variable I'm not keeping
> constant?

Did you verify it was really that patch by unapplying/reapplying it?
Sometimes there are mistakes in the bisect process.

-Andi

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