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Dan Bongert writes:
>We just rolled out SpamAssassin 2.60 as a spam filtering option to our
>users (after using it on IT staff guinea pigs for about a month), and only
>have about 20 people using it so far out of a possible 800 or so. In theory,
>the mail server (dual 1.13 PIIIs, 1Gb RAM, FreeBSD 4.8-STABLE) should be able
>to handle the load just fine (it currently delivers about 25000 messages a day
>via sendmail and procmail (didn't blink for the SoBig virus rush), and
>probably runs about a tenth of that through SA).
>
>However, in the last two weeks, I've had SA go haywire, and take up mucho CPU
>time. The first time, I was up to a load average of 16, and sendmail quit
>sending mail (the default cutoff for sendmail is a load of 12, which we've
>never hit). I've limited spamd to 5 concurrant processes, but that doesn't
>seem to help. When there were 5 haywire jobs this morning, the entire SA
>system quit working altogether (spams weren't getting filtered), so that's
>obviously not what I want.
>
>Any idea what would cause SA to start grabbing huge amounts of CPU time? I'm
>just running the basic rulesets, no evil or anything like that. I can't even
>tell if it's hanging up on a particular message--I'm not sure where to find
>that information. It's usually hanging on messages being delivered to me, but
>that may be just because I get an insane amount of email.

Could be opportunistic Bayes expiry -- try setting up a cron job
to run

        sa-learn --rebuild --force-expire

- --j.
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