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

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Message-ID: <487F6913.2000602@goop.org>
Date:	Thu, 17 Jul 2008 08:45:23 -0700
From:	Jeremy Fitzhardinge <jeremy@...p.org>
To:	"Alex Nixon (Intern)" <Alex.Nixon@...citrix.com>
CC:	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>
Subject: Re: Large increase in context switch rate

Alex Nixon (Intern) wrote:
> Yeah I've checked - the number of context switches seems to be around
> 60k regardless of whether CONFIG_PARAVIRT is switched on, and regardless
> of whether it's running in domu or native (-j4 on dual core)
>   

OK, just to be sure we're talking about the same thing, is kernbench 
displaying the context switch *rate*, or the total number of context 
switches during the build?

Peter is looking at vmstat, which is showing cs/sec.

    J
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