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Date: Tue, 25 May 2004 07:27:40 -0700
From: "Martin J. Bligh" <mbligh@aracnet.com>
To: FabF <fabian.frederick@skynet.be>, lkml <linux-kernel@vger.kernel.org>
Subject: Re: 2.6.7rc1 vs 2.6.0
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> 	Here's trivial fgrep vs report (using ffb1) :
> 
> 2.6.7rc1 : 
> Grepping  /usr/bin  :
> 45% cpu - 38.06 RT Sec - 1.10 Sec in KM
> Entries scanned : 1527
> 85112 Kb analyzed this time
> 
> 2.6.0 : 
> Grepping  /usr/bin  :
> 51% cpu - 33.12 RT Sec - 1.10 Sec in KM
> Entries scanned :1527
> 85112 Kb analyzed this time
> 
> 	This is done against ext3 fs. Same .config, same box, same box state.
> What relevance could explain this 5s delta ? IOW, what big ext3, mm new functionnalities have been plugged in-between ?

Take kernel profiles of both (see Documentation/basic_profiling.txt)

M.