Andy Fiddaman wrote:

We're processing about a million a day per server here (Solaris 9) and I've
very rarely seen Clam using excessive CPU time.


Excessive as in what, 60%? I don't get that either.
Most often it's somewhere around 20%.
What is your hardware spec anyway? and what do you run on it?
I use v120, 512M, with exim+exiscan+clamd.

Mind you, the Solaris
installation is extensively tuned for this application which may
contribute to some of the difference.



THIS application? Are you talking about clamd or your mail system in general?
Can you share what tuning you did?
The only tuning I did on Solaris was on /etc/system :
set rlim_fd_max=65535
set rlim_fd_cur=65535


on Gentoo it was on /etc/sysctl.conf :
fs.file-max = 65535
and on /etc/security/limits.conf :
*               soft    nofile          8192
*               hard    nofile          16384

I'd suspect something to do with your Solaris installation rather than
Solaris in general.


Probably true. But this happens on almost "vanilla" Solaris 8 and 9, with the exception of build uitilies
(gcc, binutils, make, autoconf, etc). So I think it's safe to say it's "general" Solaris.


It could be something in clamd triggereed by exiscan
but then I'd expect to see the same problem on Linux!


Which isn't happening :) Same version of exim+exiscan+clamav on both.

Solaris 10 is
supposedly faster than Linux on the same platform btw although I've
always found it to be very dependant on what you're trying to do.



I got the info that Solaris 10 is faster than 8 and 9, and that they can run
linux binary unmodified, but I didn't see anywhere saying it's faster than Linux.


I suppose when it finally comes out I can try it out, but for now
it seems that Gentoo is much more appealing :)

Regards,

Fajar
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