specs & platform for new server

Julian Field mailscanner at ecs.soton.ac.uk
Sat Nov 20 12:14:31 GMT 2004

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Ugo Bellavance wrote:

> Julian Field wrote:
>> You have raised one interesting point: MailScanner will happily drive
>> your
>> system's load average up through the roof. Most of these will be
>> processes
>> awaiting network response. A load average of 10 or 12 doesn't really
>> mean
>> anything. What counts is the size of message batches that are being
>> processed. If the batches are small then you have nothing to worry
>> about. If
>> the batches start approaching 30 regularly, then you should look into
>> more
>> powerful hardware and better network setup.
>> Don't think your system is being hammered because it reports a load
>> average
>> over 10 most of the time. That is MailScanner working your box very
>> hard!
> What was the load average on the system that processed 1.5 millions
> message/day, Julian?

15 or so rings a bell. That was when version 4 first came out.
SpamAssassin has grown by orders of magnitude since, so I suspect a
reasonable load might be even higher now. It's the average batch size
you really want to watch.

Julian Field
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