[clamav-users] Scan very slow
Mark Allan
markjallan at gmail.com
Fri Apr 5 13:12:13 UTC 2019
Also CC'ing Micah directly as the mailing list would appear to be offline
(at least lists.clamav.net isn't responding to http requests anyway)
It looks like scan times have gone through the roof. As Oya said, they're
still considerably higher than they were a couple of months ago, but
today's scan time is insane.
Yesterday's scan using
0.101.2:58:25409:1554370140:1:63:48554:328
took 7m 3s
On the same hardware, scanning the same read-only disk image, with today's
scan using
0.101.2:58:25410:1554452941:1:63:48557:328
the scan time has jumped to 26m 15s
This is the longest it has ever taken to scan this volume (cf my previous
email of 25th March)
Is there anything that can be excluded?
Best regards
Mark
On Mon, 1 Apr 2019 at 17:11, Micah Snyder (micasnyd) via clamav-users <
clamav-users at lists.clamav.net> wrote:
> Thanks Oya for the update. We will continue to investigate the signature
> performance issue.
>
> Regards,
> Micah
>
> On 3/28/19, 9:50 AM, "clamav-users on behalf of Tsutomu Oyamada" <
> clamav-users-bounces at lists.clamav.net on behalf of oyamada at promark-inc.com>
> wrote:
>
> Hi Micah
>
> It seems that the scanning slow down issue of this time has been
> solved
> at some level with CVD Update of the other day.
> However, there is still big discrepancy in between the current
> condition and
> the last condition in one month ago.
>
> Date Files Scan time
> 2019/02/15 2550338 08:53:57
> 2019/03/15 2612792 19:22:54
> 2019/03/26 2634489 18:13:56
> 2019/03/27 2637201 18:10:05
>
> We know the improvement of this time is due to the details of CVD,
> because
> we did not make any change on the user's system.
> We are going to try some tuning for scanning.
>
> We like to know if you still have some room to make further improvement
> for this slow down issue.
> Thank you for your help, in advance.
>
> Best regards,
> Oya
>
> On Mon, 25 Mar 2019 15:45:02 +0000
> "Micah Snyder \(micasnyd\) via clamav-users" <
> clamav-users at lists.clamav.net> wrote:
>
> > Hi Mark, all:
> >
> > I’m disappointed to hear that it is still slow for you.
> >
> > We found that the target-type of signatures used for
> PhishTank.Phishing signatures were causing a significant slowdown. We
> have dropped them as of this past Saturday (
> https://lists.gt.net/clamav/virusdb/75279 ) and in the last two updates
> have been re-adding them with more specific scan target types. We’re now
> investigating some other optimizations we can make for the next major
> ClamAV release to improve scan times but at present we don’t have any other
> leads for signatures that may be slowing down scans.
> >
> > Regards,
> > Micah
> >
> >
> > From: clamav-users <clamav-users-bounces at lists.clamav.net> on
> behalf of Mark Allan via clamav-users <clamav-users at lists.clamav.net>
> > Reply-To: ClamAV users ML <clamav-users at lists.clamav.net>
> > Date: Monday, March 25, 2019 at 9:37 AM
> > To: ClamAV users ML <clamav-users at lists.clamav.net>
> > Cc: Mark Allan <markjallan at gmail.com>
> > Subject: Re: [clamav-users] Scan very slow
> >
> > Cheers Steve,
> >
> > In the interest of completeness, here's the scan from today (TXT
> from DNS: 0.101.1:58:25399:1553509741:1:63:48528:328) showing a marked
> improvement in scan time, although at 6m 7s it's still almost twice what it
> used to be.
> >
> > Mark
> >
> > On Mon, 25 Mar 2019 at 12:56, Steve Basford <
> steveb_clamav at sanesecurity.com<mailto:steveb_clamav at sanesecurity.com>>
> wrote:
> > On 2019-03-25 10:52, Mark Allan via clamav-users wrote:
> > > Hi all,
> > >
> > te.
> > >
> > > Hopefully this helps someone to narrow things down a bit.
> > >
> > > Mark
> > >
> >
> > 18/3/19 10m 49s TXT from DNS:
> > 0.101.1:58:25392:1552904941:1:63:48507:328 ***
> >
> > Here's the changes for the above update:
> >
> > https://lists.gt.net/clamav/virusdb/75154
> >
> > You can also check sigs quickly per update:
> >
> > https://lists.gt.net/clamav/virusdb/
> >
> >
> >
> > --
> > Cheers,
> >
> > Steve
> > Twitter: @sanesecurity
> >
> > _______________________________________________
> >
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> > clamav-users at lists.clamav.net<mailto:clamav-users at lists.clamav.net>
> > https://lists.clamav.net/mailman/listinfo/clamav-users
> >
> >
> > Help us build a comprehensive ClamAV guide:
> > https://github.com/vrtadmin/clamav-faq
> >
> > http://www.clamav.net/contact.html#ml
>
>
>
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>
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>
>
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>
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>
>
>
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>
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>
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>
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