On Tue, 2 Dec 2003, Ken McKittrick wrote:
> Ed
>
> Amavisd-new and Clamd are the bottleneck on this system. With 8 amavisd
> processes, clamd runs with 5 threads. That goes up to 6 threads with 12
> amavisd processes. This might be the most I can get on an 8 cpu system.
We use MIMEDefang + clamd to scan about 300,000 emails per day on a V880
which is mostly idle.
> I'm still fine tuning this machine for maximal throughput.
Are you using /var/tmp for the temporary files while scanning? My guess
is that your bottleneck might be disk i/o. We average about 2 active
clamd threads, I think, but I haven't watched it closely...
Ed
>
> Thanks
> Ken McKittrick
> USADatanet
>
> On Dec 2, 2003, at 10:20 AM, Ed Phillips wrote:
>
> > On Tue, 2 Dec 2003, Ken McKittrick wrote:
> >
> >> Hello
> >>
> >> I have Postfix 2.0.16, Amavisd-new, SpamAssassin, and Clamav 0.65
> >> running on a Enterprise 4500 with 8 CPU's. It's configured to use 16
> >> Amavisd processess and the Clamav.conf has MaxThreads set to 40. I
> >> only
> >> see 6 clamd threads. I don't think that Clamd is keeping up with
> >> Amavisd.
> >
> > From looking at the source, clamd appears to allocate a thread when a
> > request comes in... and then the thread exits. It doesn't pre-allocate
> > MaxThreads threads and have them sit idle waiting for work...
> >
> > Hope this helps!
> >
> > Ed
> >
> >> Any ideas on how to get more Clamd threads?
> >>
> >> 25825 vscan 28M 23M run 20 0 0:00.10 3.6% amavisd/1
> >> 25957 vscan 28M 21M run 20 0 0:00.08 3.5% amavisd/1
> >> 25978 vscan 28M 21M run 20 0 0:00.07 3.0% amavisd/1
> >> 26030 vscan 28M 20M cpu8 30 0 0:00.06 2.8% amavisd/1
> >> 26022 vscan 28M 21M run 20 0 0:00.05 2.5% amavisd/1
> >> 26094 vscan 27M 20M run 20 0 0:00.04 2.3% amavisd/1
> >> 25984 vscan 27M 20M run 20 0 0:00.05 2.3% amavisd/1
> >> 26131 vscan 27M 20M sleep 20 0 0:00.04 2.0% amavisd/1
> >> 26182 vscan 27M 20M run 20 0 0:00.02 1.5% amavisd/1
> >> 12752 vscan 10M 9416K sleep 58 0 0:00.09 1.5% clamd/6
> >> 26247 vscan 27M 20M cpu13 20 0 0:00.02 1.2% amavisd/1
> >> 26252 vscan 26M 19M run 30 0 0:00.01 1.0% amavisd/1
> >> 26265 vscan 27M 19M cpu1 30 0 0:00.01 0.9% amavisd/1
> >> 26267 vscan 26M 19M run 20 0 0:00.01 0.8% amavisd/1
> >>
> >> Thanks
> >> Ken McKittrick
> >> USADatanet
>
>
>
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Ed Phillips <[EMAIL PROTECTED]> University of Delaware (302) 831-6082
Systems Programmer III, Network and Systems Services
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