[Mailman-Users] Could not acquire qrunner lock

[Josep L. Guallar-Esteve]

Hi,

We use mailman at work to manage a few lists (16) with an average of 10 
users/list. 

The mail server is a Red Hat Linux 7.3 server, on a P-III-550/1,354,424KB with 
SCSI drives using ext3 filesystem. We run Postfix version 1.1.7-2 + Mailman 
version 2.0.13 + Python 1.5.2-43.73. We have a total of 75 mail users. The 
messages are text-based, i.e., usualy pretty small.

Postfix works pretty fast. But mailman is slow. Mails to mailing lists take 
about 6 minutes. Individual mails are about instantaneous:

Received: from ************ by by ********* (Postfix) with ESMTP
	id *******; Wed, 23 Apr 2003 12:54:22 -0400 (EDT)
Delivered-To: sysadmin at easternrad.com
Received: from ****** by ******** (Postfix) with SMTP id *********
	for <mailinglist@**********>; Wed, 23 Apr 2003 12:48:37 -0400 (EDT)

Although the smtp log says that it only takes a few seconds:

(...)
Apr 23 07:12:02 2003 (28717) smtp for 6 recips, completed in 1.588 seconds
Apr 23 10:56:10 2003 (30680) smtp for 31 recips, completed in 7.995 seconds
Apr 23 12:54:23 2003 (31998) smtp for 5 recips, completed in 2.410 seconds
(...)

I've checked mailman logs and I've found this error, over and over again, at 
qrunner log file:

(...)
Apr 22 23:53:01 2003 (25973) Could not acquire qrunner lock
Apr 22 23:54:00 2003 (25979) Could not acquire qrunner lock
Apr 22 23:55:02 2003 (25994) Could not acquire qrunner lock
Apr 22 23:56:03 2003 (26028) Could not acquire qrunner lock
Apr 22 23:57:01 2003 (26035) Could not acquire qrunner lock
Apr 22 23:58:01 2003 (26043) Could not acquire qrunner lock
Apr 22 23:59:01 2003 (26045) Could not acquire qrunner lock
(...)

I've searched the mailman users archives, and the only symilar error was 

Date: Tue, 10 Sep 2002 03:54:06 -0400 (EDT)
Subject: [Mailman-Users] Could not acquire qrunner lock

The problem there was solved because there were a set of files showing up in 
the log file, that had to be deleted to improve performance 
(/home/mailman/qfiles/001b6903fc7ad5bdcdfa930711200d5a1306e7af* )

Unfortunately, no filenames show up in my logs.

Also, permissions and DB both look OK:
# ./check_perms
No problems found
]# ./check_db all
/home/mailman/lists/all/config.db is fine
/home/mailman/lists/all/config.db.last is fine
#

*Right now* , qrunner is not running. And I see no qrunner lock files at 
/home/mailman/locks

Any ideas?


Regards,
Josep
-- 
Josep L. Guallar-Esteve		Eastern Radiologists, Inc.
Systems and Network Administration  http://www.easternrad.com