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Date:      Fri, 8 Feb 2002 05:50:04 -0800 (PST)
From:      David Malone <dwmalone@maths.tcd.ie>
To:        freebsd-bugs@FreeBSD.org
Subject:   Re: kern/34711: frequent system stall under moderate scsi load 
Message-ID:  <200202081350.g18Do4k47980@freefall.freebsd.org>

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The following reply was made to PR kern/34711; it has been noted by GNATS.

From: David Malone <dwmalone@maths.tcd.ie>
To: Craig Stratton <craig@avnet.co.uk>
Cc: freebsd-gnats-submit@freebsd.org
Subject: Re: kern/34711: frequent system stall under moderate scsi load 
Date: Fri, 08 Feb 2002 13:48:26 +0000

 All the processes are in a state where they are waiting for the
 disk (inode, biord and getblk). The percentage system time is kinda
 high too - is that typical of this system?
 
 Can you have a look at the output of dmesg and see if there is
 anything mentioned around the stall time. Also, what type of SCSI
 card do you have? The relivant lines from /var/log/dmesg.boot might
 be useful.
 
 It is possible that the system is just running low on memory and
 getting stuck trying to free it up. Matt Dillon made some improvements
 in this area, which probably came in since 4.1...
 
 	David.

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