Kevin,
>> Kevin Bailey wrote:
>>
>>> On a server which deals with a few thousand emails per day and only has
>>> 500MB of RAM I'm getting errors related to
>>>
>>>
>>>
>> is clamav running as CLAMDSCAN?
>> (if you did 'top' did you see clamscan running, or CLAMDSCAN)
>>
>>
>
> Yes. Is this the problem?
>
> And it's at 90%+ CPU usage.
>
You're not running on Debian by any chance are you? (I seem to remember
seeing one of your earlier posts which mentioned Debian). I know there was
a bug in the Debian package of ClamAV earlier in the year which caused it
to eat 90-100% of the CPU. This bug was repeatedly taking one of our
servers down until I found and fixed it - in our case nothing but a reboot
would resolve it.
I forgot the specifics of the problem but the solution (and I'm very much
assuming that you are running Debian) is to add the volatile sources to
your /etc/apt/sources.list file and update the box (apt-get update |
apt-get upgrade). It seems that Debian's policy of not including software
builds until they are guaranteed stable doesn't really fit with software
which is constantly being updated - like AV software. See
http://www.debian.org/volatile/ for more info and details how to use
volatile.
One other thing - you are running Clam in daemon mode in your primary AV
scanners aren't you? (as opposed to calling clamscan for each file which
requires loading the signatures each time - and eats CPU time). If this is
the case then you'll be using the internal amavis socket connections for
submitting files to scan rather than scraping the output of the cmdline
scanner.
Hope this helps
Richard
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