Extracting those last drops of performance
Randal, Phil
prandal at herefordshire.gov.uk
Wed May 5 12:44:37 IST 2010
Does vmstat show any swapping going on? If so, reduce the number of
children.
You might wish to play with the
Max SpamAssassin Size
setting, too.
Cheers,
Phil
--
Phil Randal | Networks Engineer
NHS Herefordshire & Herefordshire Council | Deputy Chief Executive's
Office | I.C.T. Services Division
Thorn Office Centre, Rotherwas, Hereford, HR2 6JT
Tel: 01432 260160
email: prandal at herefordshire.gov.uk
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-----Original Message-----
From: mailscanner-bounces at lists.mailscanner.info
[mailto:mailscanner-bounces at lists.mailscanner.info] On Behalf Of Zaeem
Arshad
Sent: 04 May 2010 17:44
To: MailScanner discussion
Subject: Extracting those last drops of performance
Hi List,
My MailScanner+Postfix rejects roughly 8 million spam messages a day on
MTA level while around 1.2 million are passed on to MailScanner for
scanning. The system is a dual quad core 2.5 GHz system with 24 GB RAM
today. At times, MailScanner is unable to keep up with the number of
spam messages that escape the MTA checks and are submitted to
MailScanner causing huge delays. I am just wondering if tweaking the
following settings can get me improved performance.
Max Children = 40
Max Unscanned Bytes Per Scan = 100m
Max Unsafe Bytes Per Scan = 50m
Max Unscanned Messages Per Scan = 50
Max Unsafe Messages Per Scan = 50
Max Normal Queue Size = 70000
I am using caching dns, ram disk for processing, clamd, compiled
spamassassin rules and optimized scheduler and filesystems in this
server. Any ideas on how I can tweak the above settings to gain more
MailScanner performance?
Regards
--
Zaeem
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