The following reply was made to PR kern/30531; it has been noted by GNATS.

From: Manuel Bouyer <bouyer@antioche.eu.org>
To: gnats-bugs@NetBSD.org
Cc: kern-bug-people@NetBSD.org, gnats-admin@NetBSD.org,
	netbsd-bugs@NetBSD.org
Subject: Re: kern/30531: lsilogic raid array crawls
Date: Wed, 15 Jun 2005 20:18:16 +0200

 On Wed, Jun 15, 2005 at 04:39:00PM +0000, prlw1@cam.ac.uk wrote:
 > [...]
 > By comparison, a Nov 2004 Fedora Core rescue CD
 > Linux localhost.localdomain 2.6.9-1.667 #1 Tue Nov 2 14:41:31 EST 2004 i686 unknown
 > gives:
 > 
 >   % time dd if=/dev/sda of=/dev/null bs=64k count=1000
 >   1000+0 records in
 >   1000+0 records out
 > 
 >   real    0m0.727s
 >   user    0m0.006s
 >   sys     0m0.060s
 
 Note that on linux /dev/sda goes though the buffer cache. Your dd may not
 have touched the disk at all. To be sure, can you try with a transfer at last
 2x larger than your RAM (twice, to be sure to flush the entire cache).
 
 -- 
 Manuel Bouyer <bouyer@antioche.eu.org>
      NetBSD: 26 ans d'experience feront toujours la difference
 --