Slow MailScanner

[Jay Chandler]

I have two servers.

Here's one:

aconcagua#  tail -f /var/log/maillog |grep rocessed
Feb 13 08:39:58 aconcagua MailScanner[83401]: Batch (1 message) 
processed in 6.66 seconds
Feb 13 08:39:58 aconcagua MailScanner[83008]: Batch (1 message) 
processed in 10.06 seconds
Feb 13 08:40:00 aconcagua MailScanner[83989]: Batch (1 message) 
processed in 6.11 seconds
Feb 13 08:40:03 aconcagua MailScanner[83677]: Batch (1 message) 
processed in 6.84 seconds
Feb 13 08:40:04 aconcagua MailScanner[82475]: Batch (1 message) 
processed in 6.70 seconds
Feb 13 08:40:05 aconcagua MailScanner[82359]: Batch (1 message) 
processed in 8.74 seconds
Feb 13 08:40:06 aconcagua MailScanner[83301]: Batch (2 messages) 
processed in 12.81 seconds
Feb 13 08:40:07 aconcagua MailScanner[82879]: Batch (1 message) 
processed in 7.75 seconds
Feb 13 08:40:09 aconcagua MailScanner[82035]: Batch (1 message) 
processed in 6.53 seconds
Feb 13 08:40:11 aconcagua MailScanner[83989]: Batch (1 message) 
processed in 6.41 seconds
Feb 13 08:40:11 aconcagua MailScanner[84046]: Batch (1 message) 
processed in 6.84 seconds
Feb 13 08:40:12 aconcagua MailScanner[83301]: Batch (1 message) 
processed in 6.56 seconds

Here's the other:

> spacecowboy# tail -f /var/log/maillog |grep rocessed
> Feb 13 08:38:57 spacecowboy MailScanner[54541]: Batch (9 messages) 
> processed in 252.21 seconds
> Feb 13 08:39:12 spacecowboy MailScanner[49475]: Batch (2 messages) 
> processed in 61.60 seconds
> Feb 13 08:39:12 spacecowboy MailScanner[53408]: Batch (4 messages) 
> processed in 86.83 seconds
> Feb 13 08:39:14 spacecowboy MailScanner[53430]: Batch (2 messages) 
> processed in 31.38 seconds
> Feb 13 08:39:17 spacecowboy MailScanner[54987]: Batch (8 messages) 
> processed in 166.69 seconds
> Feb 13 08:39:18 spacecowboy MailScanner[53490]: Batch (19 messages) 
> processed in 531.03 seconds
> Feb 13 08:39:21 spacecowboy MailScanner[53398]: Batch (14 messages) 
> processed in 384.67 seconds
> Feb 13 08:39:30 spacecowboy MailScanner[53412]: Batch (8 messages) 
> processed in 97.58 seconds
> Feb 13 08:39:32 spacecowboy MailScanner[54123]: Batch (2 messages) 
> processed in 62.52 seconds
> Feb 13 08:39:38 spacecowboy MailScanner[53430]: Batch (1 message) 
> processed in 24.16 seconds
> Feb 13 08:39:39 spacecowboy MailScanner[55686]: Batch (30 messages) 
> processed in 647.57 seconds
> Feb 13 08:39:48 spacecowboy MailScanner[56780]: Batch (5 messages) 
> processed in 68.93 seconds

Any idea what would be causing this?  Same configuration, same MX 
priority.  The one with delays has built quite the queue backlog.

-- 
Jay Chandler
Network Administrator, Chapman University
714.628.7249 / chandler at chapman.edu
Today's Excuse: Processes running slowly due to weak power supply