dying children?

[Eduardo Casarero]

2008/7/29 Jon Dustin <jdustin at usm.maine.edu>

> Greetings -
>
> For the past few weeks my Mailscanner duo has been slowing down. I have a
> pair of SLES10 boxes running Postfix and MailScanner v4.62.9. I realize this
> is a slightly old version, but it had been running very well for a long
> time.
>
> Last night I began digging around and discovered the MailScanner children
> are dying very quickly (just a few minutes), and replaced with new siblings.
> If I understand MailScanner's architecture, the children should live for 12
> hours before being replaced by the master?
>
> This morning I have upgraded one MailScanner node to the latest STABLE
> version (v4.70.7), but the problem still remains.
>
> I thought the issue may have to do with MailWatch, so I disabled the
> "Always Looked Up Last" function. This change had no effect.
>
> At this point it appears some messages are being scanned multiple times by
> different children, which slows the process down dramatically. Thinking this
> was a locking issue, I changed Lock Type to posix, also with no effect.
>
> The speed reported in syslog seems decent for most batches:
>
> Jul 29 10:31:31 mail2 MailScanner[12348]: Batch (30 messages) processed in
> 229.92 seconds
> Jul 29 10:31:39 mail2 MailScanner[12601]: Batch (13 messages) processed in
> 107.58 seconds
> Jul 29 10:32:02 mail2 MailScanner[12375]: Batch (22 messages) processed in
> 185.64 seconds
> Jul 29 10:32:07 mail2 MailScanner[12685]: Batch (12 messages) processed in
> 99.20 seconds
> Jul 29 10:32:25 mail2 MailScanner[12685]: Batch (2 messages) processed in
> 17.73 seconds
> Jul 29 10:32:26 mail2 MailScanner[12804]: Batch (4 messages) processed in
> 44.68 seconds
>
> This box is running as a VM session, but on very decent hardware with 1GB
> ram.
>
> Any thoughts on where I should investigate next?
>

In MailScanner.conf what do you have in "Restart Every" ??

# To avoid resource leaks, re-start periodically. Forces a re-read of all
# the configuration files too, so new updates to the bad phishing sites list
# are read frequently.
Restart Every = 14400



>
> Thank you for your assistance and ideas.
>
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