optimisation hints required & broken links on wiki

Martin.Hepworth martinh at solidstatelogic.com
Tue Oct 9 19:09:44 IST 2007


SAndro

Have a look in the wiki (wiki.mailscanner.info) for upto date  info.

--
Martin Hepworth
Snr Systems Administrator
Solid State Logic
Tel: +44 (0)1865 842300

> -----Original Message-----
> From: mailscanner-bounces at lists.mailscanner.info [mailto:mailscanner-
> bounces at lists.mailscanner.info] On Behalf Of Sandro Dentella
> Sent: 09 October 2007 11:14
> To: mailscanner at lists.mailscanner.info
> Cc: Giulio Patisso
> Subject: optimisation hints required & broken links on wiki
>
> Hi,
>
>   I 'inherited' in these days a mailserver in which there are huge delays.
> I
>   need to optimize but reading the wiki I discovered some relevant links
> are
>   broken, namely:
>
>   How to run a DCC:
>        http://www.mailscanner.info/serve/cache/312.html
>
>   Bayes growing out of control
>        http://www.mailscanner.info/serve/cache/317.html
>
>   How to manually train SpamAssassin:
>       http://www.sng.ecs.soton.ac.uk/mailscanner/serve/cache/98.html
>
>   I'd appreciate any hint on how to get to those pages.
>
>
>   In the meanwhile I'like to better understand where I should concentrate
> to
>   get a more responsive server.  Main problem is that often the queue goes
>   higher that 5000 messages and some messages are delivered after 1 hour
> and
>   even more.
>
>   My hardware setup should be quite fast:
>
>   * dual xeon 3GB server - 4GB RAM around 50.000 mail/day concentrated in
>   * working time postfix on debian sarge - mailscanner 4.57.6 DNS is local
>   * (named from bind9) load average is normally low (1-4) cpu around 4%
>
>
>   Max Unscanned Messages Per Scan = 10
>   Max Unsafe Messages Per Scan = 10
>   Spam List = ORDB-RBL
>
>   in this moment average time is high:
>
>      Batch (10 messages) processed in 51.55 seconds
>      Batch (12 messages) processed in 57.42 seconds
>      Batch (13 messages) processed in 46.37 seconds
>      Batch (14 messages) processed in 52.74 seconds
>      Batch (11 messages) processed in 46.81 seconds
>      Batch (12 messages) processed in 48.57 seconds
>      Batch (10 messages) processed in 29.24 seconds
>      Batch (12 messages) processed in 42.29 seconds
>      Batch (14 messages) processed in 36.74 seconds
>      Batch (10 messages) processed in 35.31 seconds
>      Batch (12 messages) processed in 41.79 seconds
>      Batch (10 messages) processed in 42.96 seconds
>
>      and later:
>
>       Batch (12 messages) processed in 119.03 seconds
>       Batch (12 messages) processed in 113.34 seconds
>       Batch (12 messages) processed in 144.11 seconds
>       Batch (10 messages) processed in 142.57 seconds
>       Batch (10 messages) processed in 148.63 seconds
>       Batch (13 messages) processed in 120.17 seconds
>       Batch (13 messages) processed in 109.28 seconds
>       Batch (11 messages) processed in 152.12 seconds
>       Batch (10 messages) processed in 226.92 seconds
>
>   compared with what stated in the wiki (below 3 seconds)
>   Is there a way to understand how is time spent?
>
>
>   According to ps ax, MailScanner is mainly busy with
>   SpamAssassin
>
>  9030 ?        S      0:08 MailScanner: checking with SpamAssassin
>
>   I'd really appreciate any hint / document to read. This situation is
>   becoming more and more important to me...
>
>   Tanks a lot in advance
>   sandro
>   *:-)
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>
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>
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