Hi Val,

Thank you for your quick attention to this issue.
We have observed the scan duration greatly improve, lowering to nearly
pre-spike levels.

Jul 22 01:37:15 ip-172-21-0-99 docker: clamscan: Time: 49262.080 sec (821 m
2 s)
Jul 22 20:50:12 ip-172-21-0-99 docker: clamscan: Time: 53402.376 sec (890 m
2 s)
Jul 23 11:56:33 ip-172-21-0-99 docker: clamscan: Time: 54366.778 sec (906 m
6 s)
Jul 24 03:24:17 ip-172-21-0-99 docker: clamscan: Time: 55648.695 sec (927 m
28 s)
Jul 24 18:42:14 ip-172-21-0-99 docker: clamscan: Time: 55075.211 sec (917 m
55 s)
Jul 25 10:04:33 ip-172-21-0-99 docker: clamscan: Time: 55323.970 sec (922 m
3 s)
Jul 26 17:12:09 ip-172-21-0-99 docker: clamscan: Time: 112041.332 sec (1867
m 21 s)
Jul 27 23:38:15 ip-172-21-0-99 docker: clamscan: Time: 109551.042 sec (1825
m 51 s)
Jul 29 06:20:50 ip-172-21-0-99 docker: clamscan: Time: 110540.360 sec (1842
m 20 s)
Jul 31 11:16:36 ip-172-21-0-99 docker: clamscan: Time: 90973.431 sec (1516
m 13 s)
Aug  1 04:05:30 ip-172-21-0-99 docker: clamscan: Time: 60518.857 sec (1008
m 38 s)
Aug  1 20:46:51 ip-172-21-0-99 docker: clamscan: Time: 60079.482 sec (1001
m 19 s)
Aug  2 13:42:39 ip-172-21-0-99 docker: clamscan: Time: 60933.142 sec (1015
m 33 s)
Aug  3 05:22:35 ip-172-21-0-99 docker: clamscan: Time: 56381.462 sec (939 m
41 s)
Aug  3 20:55:49 ip-172-21-0-99 docker: clamscan: Time: 55993.351 sec (933 m
13 s)
Aug  4 12:33:42 ip-172-21-0-99 docker: clamscan: Time: 56258.657 sec (937 m
38 s)

Cheers!
-daniel




On Tue, Jul 29, 2025 at 8:12 PM Val Snyder (micasnyd) via clamav-users <
[email protected]> wrote:

> Thanks all for reporting scan time issues with the recent update.  We are
> working to reduce the scan time caused by the recent signature update.
>
> Sorry for the delayed response. I actually thought I'd clicked send on
> this.
>
> Best,
> Val
>
>
> Val Snyder (she/they)
> ClamAV Development
> Talos
> Cisco Systems, Inc.
> ------------------------------
> *From:* clamav-users <[email protected]> on behalf of
> Steve Basford via clamav-users <[email protected]>
> *Sent:* Tuesday, July 29, 2025 10:24 AM
> *To:* ClamAV users ML <[email protected]>
> *Cc:* Steve Basford <[email protected]>
> *Subject:* Re: [clamav-users] 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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>
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>
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>
>
> _______________________________________________
>
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>
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>
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>
>
>
> Cheers,
>
> Steve
> Twitter: @sanesecurity
> _______________________________________________
>
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>
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>
> https://docs.clamav.net/#mailing-lists-and-chat
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