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From: Dave Hansen <haveblue@us.ibm.com>
To: Andrew Morton <akpm@zip.com.au>
Cc: linux-kernel@vger.kernel.org,
	"Martin J. Bligh" <Martin.Bligh@us.ibm.com>
Subject: success with atomic kmap patches
Date: Thu, 18 Jul 2002 19:15:48 -0700	[thread overview]
Message-ID: <3D377654.5000100@us.ibm.com> (raw)

I was using a little script to warm up my file cache for Specweb runs 
when Martin Bligh said that it might be a good test of your kmap 
patches.  I ran 8 greps in parallel (1-per-cpu) through a 10-gigabyte 
Specweb file set which is on a RAID array.  The RAID is how I can do a 
cold run in 3 minutes 30 sec :).  Each grep works on a disjoint set of 
data.

Here's a run with the cache already warm:
http://www.sr71.net/~specweb99/run-pgrepwarm-2.5.26+lm+kmapfun-07-18-2002-18.24.38/
You'll probably only care about greptime.total, and lockstat.  The 
network stuff is cruft from when I actually run Specweb.

Here's a cold cache run:
http://www.sr71.net/~specweb99/run-pgrep-cold-2.5.26+lm+kmapfun-07-18-2002-18.25.55/

Here are warm and cold, without the kmap patches
http://www.sr71.net/~specweb99/run-pgrep-cold-2.5.26+lm-07-18-2002-18.46.27/
http://www.sr71.net/~specweb99/run-pgrep-warm-2.5.26+lm-07-18-2002-18.56.09/

I would give you oprofile data, but it appears that NMIs wreak havoc 
on a certain vendor's hardware.  When oprofile is compiled in, my box 
gets quite unstable.
-- 
Dave Hansen
haveblue@us.ibm.com


                 reply	other threads:[~2002-07-19  2:13 UTC|newest]

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