dave-usenet at djwcomputers
Dec 11, 2006, 7:20 AM
Post #5 of 5
In message <457D0FDD.7010406 [at] bandsman> Nigel Horne
<njh [at] bandsman> wrote:
>Dave Warren wrote:
>> In message <457BD4B8.3010704 [at] bandsman> Nigel Horne
>> <njh [at] bandsman> wrote:
>>> There is another, more important, difference which you omitted to include in your equation: the difference in the engine versions. Recently the engine was upgrade to catch more viruses, unfortunately this improvement included a nasty performance hit, which we are aware of.
>> Is there a light at the end of the tunnel?
>We take the attitude that catching viruses is much more important than
>performance, so we have other issues on our list of things to do. I
>don't wish to sound as though we consider performance unimportant
>(profiling the code is always on my list of things to do!), we do, but I
>wish you to understand where our priority is.
Understood -- And in principle I agree, although in practice, if I
wanted to block all viruses, I'd simply run mimedefang and/or discard
anything which isn't in plain-text to begin with, so there always needs
to be a balance.
A hardware upgrade to my under-powered server will restore balance to
>> I'm currently running both Kaspersky and ClamAV, so my current solution
>> is to bypass certain classes of messages from ClamAV scanning, this is
>> helping, but at the end of the day, customers are still noticing the
>It would be useful if you were to find the specific class or type of
>file which suffers most and let us know, so that we know where to focus
Right now, I'm concentrating more on the classes of mail that are less
of a threat and therefore don't need to be scanned with two engines.
I've got two new servers lined up and ready to roll, once I'm migrated
over I'll start passing everything through clamd again and see if I can
identify any specific classes or groups of mail which take longer then
expected, with any luck it won't be a security-sensitive client :)
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