Re: Time taken to complete scan recently doubled

On 29 July 2025 10:58:51 Mark Allan via clamav-users 
<[email protected]> wrote:

> We're seeing the same thing here.
>
> We mirror the DB for ClamXAV users but we do a Mac-specific FP test first 
> which usually takes around 3.5 hours on a fast Mac.
>
> Daily DB version 27709 took 3 hours 20 minutes whereas version 27710 took 
> 12 hours 46 minutes

Only to add...Lots of sigs added in 22710...

https://lists.clamav.net/pipermail/clamav-virusdb/2025-July/009095.html

>
>
> Mark
>
>> On 29 Jul 2025, at 9:22 am, Karl Pielorz via clamav-users 
>> <[email protected]> wrote:
>>
>>
>> --On 28 July 2025 16:33 -0700 Daniel Sotirhos via clamav-users 
>> <[email protected]> wrote:
>>
>>> Hi
>>>
>>> Starting July 25th we've seen the time taken to complete a scan of our
>>> system double, jumping from 15 hours up to 34. We haven't changed the
>>> system's configuration, and the number of files scanned and total size has
>>> remained relatively constant.
>>
>> fwiw - We've seen similar here. We do a lot of ad-hoc scans of files etc.
>>
>>> The increase in scan time correlates with an update of the daily database
>>> from version 27709 to 27710.
>>
>> Since around this change we've noticed a lot of latency on systems ahead of 
>> clamav - which seems to be caused by scans slowing down - and massively 
>> increased load averages on the scanning machines themselves :(
>>
>> -Karl
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Cheers,

Steve
Twitter: @sanesecurity

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