Upgrade to clamav 0.90.2 makes scanning extremely slow

Julian Field MailScanner at ecs.soton.ac.uk
Wed Apr 25 10:53:12 IST 2007

Hash: SHA1

Kapetanakis Giannis wrote:
> On Tue, 24 Apr 2007, Ed Bruce wrote:
>> Hash: SHA1
>> Julian Field wrote:
>>> Kapetanakis Giannis wrote:
>>>> On Mon, 23 Apr 2007, Martin wrote:
>>>> Clamd works fast on the other hand.
>>>> Maybe it should be included officialy (clamdscan)
>>>> in MailScanner's the next version.
>>> Why? I already support the "clamavmodule" which is faster than clamd 
>>> anyway.
>>> Jules
>> And I haven't noticed any performance degradation with clamavmodule
>> since upgrading to 0.90.2.
> Same for me...
> I remembered now that I did try clamavmodule.
> The load now is seen in the MailScanner but I guess it is
> the perl module that is being loaded.
>> From a little debug I did in clamavscan
> what it does and takes so long is:
> Loading the database
> copying the database to /tmp/
> loading the database from /tmp
> It does this for every mail it comes in.
Slight correction: it does it once for every batch.
> How does clamavmodule handle the db?
> Clamd only loads the db once.
clamavmodule loads the db once at startup. It then monitors the 
signature files and instantly reloads the db if the signatures files 
change at all.
> Giannis


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Julian Field MEng CITP
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