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From: Andi Kleen <ak@suse.de>
To: Linus Torvalds <torvalds@osdl.org>
Subject: Re: [patch] i386: use thread_info flags for debug regs and IO   bitmaps
Date: Mon, 10 Jul 2006 02:07:49 +0200
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Cc: Chuck Ebbert <76306.1226@compuserve.com>,
       Stephane Eranian <eranian@hpl.hp.com>,
       linux-kernel <linux-kernel@vger.kernel.org>,
       Andrew Morton <akpm@osdl.org>
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On Monday 10 July 2006 01:48, Linus Torvalds wrote:
> 
> On Sun, 9 Jul 2006, Chuck Ebbert wrote:
> > 
> > After I saw a ~7% gain in task-switch performance, I like it now
> > even without perfmon2 in there.
> 
> So is the 7% performance gain visible with just that single patch 

It came from lmbench which is not particularly stable for context switch
times. Might well be an artifact. It sounds too much too.

-Andi