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Date: Tue, 25 Feb 2003 18:17:27 +0100
From: Andrea Arcangeli <andrea@suse.de>
To: Andrew Morton <akpm@digeo.com>
Cc: Hanna Linder <hannal@us.ibm.com>, lse-tech@lists.sf.et,
       linux-kernel@vger.kernel.org
Subject: Re: Minutes from Feb 21 LSE Call
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On Sat, Feb 22, 2003 at 07:24:24PM -0800, Andrew Morton wrote:
> 2.4.21-pre4:                    8.10 seconds
> 2.5.62-mm3 with objrmap:        9.95 seconds	(+1.85)
> 2.5.62-mm3 without objrmap:     10.86 seconds   (+0.91)
> 
> Current 2.5 is 2.76 seconds slower, and this patch reclaims 0.91 of those
> seconds.
> 
> 
> So whole stole the remaining 1.85 seconds?   Looks like pte_highmem.

would you mind to add the line for 2.4.21-pre4aa3? it has pte-highmem so
you can easily find it out for sure if it is pte_highmem that stole >10%
of your fast cpu. A line for the 2.4-rmap patch would be also
interesting.

> Note one second spent in pte_alloc_one().

note the seconds spent in the rmap affected paths too.

Andrea
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