[clamav-users] Improving clamscan speed?

[Dan Rawson]

Did some additional testing:

"clamscan -v --stdout -r" and "clamdscan -v --stdout" take approximately the same time.  
They both use all of a single core on my quad-core machine (25% of the available CPU 
cycles). Running "clamdscan -m -v --stdout" completes in approximately 1/4 the time, but 
it uses essentially 100% of my available CPU cycles.  Even starting the file manager took 
20 or 30 seconds with that scan running.

Comment on other responses:
- Eliminating files with --exclude:  I agree that this is a good strategy, but it doesn't 
solve the base issue.  Once I'm comfortable with the speed of operation, I'll definitely 
do this as a refinement.
- Smaller file size:  I don't know what this is for clamscan, but the default for clamd 
(if I've understood correctly) is already set to 25Mb (and 150Mb of extracted archive data).

I added this info to bugzilla too.

HTH!

Dan

On 12/18/2017 01:07 PM, Dan Rawson wrote:
> Steve -
>
> Thanks - I'll do a bit of testing based on the offered suggestions and then add the 
> results . . . .
>
> Dan
>
> On 12/18/2017 11:43 AM, Steven Morgan wrote:
>> Dan,
>>
>> I have opened ticket https://bugzilla.clamav.net/show_bug.cgi?id=11990 to
>> track ClamAV performance issues.
>>
>> Please post any additional ClamAV performance related info there.
>>
>> Steve
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>>
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>>
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>>
>
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