Hi SM users,
The problem:
Intermittently SM would grab 100% of cpu. This was on a 4 processor machine,
so /usr/bin/sar would show user-level cpu stepping up and down by 25%.
Sometimes reaching all 4 cpus (100%). Systems staff would usually have to
kill the runaway process ids on Monday morning. There was no obvious
connection between times of start of cpu hogging and SM activity as logged
on httpd access or error logs, but there was usually SM activity at most a
few
hours beforehand.
We know it was SM related because cpu hogging started the day it was installed,
and ceased when SM was turned off for a week.
As open source advocates in an organization with Microsoft addicted
system support department, this has proved to be quite an
embarrassing episode.
Hope someone can shed light on this,
Sandy
Details:
* IMAP Servers: Not sure which connection is involved with problem,
here are the three we connect to:
* OK [CAPABILITY IMAP4REV1 LITERAL+ SASL-IR LOGIN-REFERRALS STARTTLS
AUTH=LOGIN] <server> IMAP4rev1 2004.357 at Sun, 27 Feb 2005 23:35:56 +0000
(GMT)
* OK [CAPABILITY IMAP4REV1 LOGIN-REFERRALS STARTTLS AUTH=LOGIN] localhost
IMAP4rev1 2001.315rh at Mon, 28 Feb 2005 16:38:16 +1100 (EST)
* OK Domino IMAP4 Server Release 6.5.3 ready Mon, 28 Feb 2005 10:37:27 +1100
* PHP
PHP 4.3.2 (cgi), Copyright (c) 1997-2003 The PHP Group
Zend Engine v1.3.0, Copyright (c) 1998-2003 Zend Technologies
* Web server
/usr/sbin/httpd -v
Server version: Apache/2.0.46
Server built: Nov 5 2004 10:58:21
* Platform
uname -a
Linux www3 2.4.21-27.0.2.ELsmp #1 SMP Wed Jan 12 23:35:44 EST 2005 i686 i686
i386 GNU/Linux
more /etc/redhat-release
Red Hat Enterprise Linux ES release 3 (Taroon Update 4)
* How your software was installed (ie, packages like RPM)
squirrelmail-1.4.4.tar.gz from squirrelmail.org, then
(possibly significantly) installed in user level directory (no access to
root password).
* SquirrelMail version
SM 1.4.4
* Plugins you've installed and their versions.
[Just what came with basic tar file!]
calendar, SQCalendar $Id: README,v 1.2 2002/01/22 12:48:46 philippe_mingo Exp
$
message_details, @version $Id: setup.php,v 1.2.2.3 2004/12/27 15:03:58 kink
Exp $
newmail, @version $Id: setup.php,v 1.17.2.5 2004/12/19 08:56:01 tokul Exp $
abook_take, $Id: setup.php,v 1.8.2.3 2004/12/27 15:03:48 kink Exp $
-- Dr Sandy Dance Ph: +613 9669 4395 Fax: +613 9669 4660
Bureau of Meteorology Research Centre email: [EMAIL PROTECTED]
700 Collins St, pgp: 90D6B191 finger [EMAIL PROTECTED]
Melbourne, VIC 3000, Australia. http://www.cs.mu.OZ.AU/~sandy
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