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> -----Original Message-----
> From: amavis-user-admin@lists.sourceforge.net
> [mailto:amavis-user-admin@lists.sourceforge.net] On Behalf Of
> Max Clark
> Sent: Thursday, 16 December 2004 8:59 p.m.
> To: amavis-user@lists.sourceforge.net
> Subject: RE: [AMaViS-user] Benchmarks for Amavisd-new
>
> > I found that the most crucial tuning factor is to find the
> near-optimum
> number of child > processes for ones' setup, and not to use a
> command-line
> virus scanner.
>
> I've read in a few different places now that the recommended child
processes
> is 2-3 per cpu on a system with quantities >10 detrimental to the overall
> system performance. With HT processors the system will identify 4 virtual
> processors on a 2 cpu system. Does this mean that my recommended child
> processes is 4-6 or 8-12? How do I go about benchmarking this properly to
> find the sweet spot?
>
> On a dual 3.06GHz HT, 2GB Ram, Dual 15K RPM 36GB SCSI Disks system
dedicated
> to amavisd-new w/ spamassassin and clamd running what should I use as
> starting points?
My suggestion is to test this on your particular setup.
For example, at one organization I setup servers with dual Xeons at 2.8GHz
and 2.5 GB of RAM.
1 GB is used as ramdisk for amavisd-new (to speedup scanning) so that leaves
1.5 GB for the OS and processes (you don't want swapping under any
conditions).
Also, separate SCSI disks are used for the OS (logs) and for postfix spool
directory.
This setup runs perfectly with 30 active amavisd-new processes.
YMMV.
Cheers,
Bojan
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