Amavis 2.10.1 dies and is unusable when put under moderate load

[Thomas Spuhler]

On Tuesday, January 19, 2016 08:04:50 PM listsb-amavis at bitrate.net wrote:
> On Jan 19, 2016, at 18.09, Quanah Gibson-Mount <quanah at zimbra.com> wrote:
> > We recently updated to Amavisd 2.10.1 from 2.9.0 internally, and have
> > found that amavisd constantly dies while processing messages after being
> > put under a moderate load in our QA environment.
> > 
> > For example, here is postfix passing off the email to amavisd:
> > 
> > Jan 19 06:57:42 zqa-211 postfix/smtp[24983]: 84B33102BD3:
> > to=<user543 at zqa-211.eng.zimbra.com>, relay=127.0.0.1[127.0.0.1]:10024,
> > delay=32179, delays=32178/0.01/0.01/0.22, dsn=4.4.2, status= deferred
> > (lost connection with 127.0.0.1[127.0.0.1] while sending end of data --
> > message may be sent more than once)
> > 
> > Here we can see amavis accept it, and then die:
> > Jan 19 06:57:42 zqa-211 amavis[13724]: (13724-01) ESMTP [127.0.0.1]:10024
> > /opt/zimbra/data/amavisd/tmp/amavis-20160119T065742-13724-gste5uOH:
> > <admin at zqa-211.eng.zimbra.com> -> <user543 at zqa- 211.eng.zimbra.com>
> > SIZE=23143 Received: from zqa-211.eng.zimbra.com ([127.0.0.1]) by
> > localhost (zqa-211.eng.zimbra.com [127.0.0.1]) (amavisd-new, port 10024)
> > with ESMTP for <user543 at zqa-21 1.eng.zimbra.com>; Tue, 19 Jan 2016
> > 06:57:42 -0800 (PST)
> > Jan 19 06:57:42 zqa-211 amavis[13724]: (13724-01) Checking: iugKoVQZWTPd
> > [10.15.32.142] <admin at zqa-211.eng.zimbra.com> ->
> > <user543 at zqa-211.eng.zimbra.com> Jan 19 06:57:52 zqa-211
> > amavis-services[18544]: PID 13724 went away, 13724-01
> does $log_level = 5 reveal any additional clues about what happened to the
> process?  perhaps an strace might as well?  it's anecdotal, but, on a
> handful of occasions, we have had our mail server use up all of its memory,
> and iirc, it seemed that amavis had trouble handling that elegantly, and
> troubleshooting was a little obscure.  most recently, the culprit was
> something wrt razor servers changing [hostname, ip address, or such], which
> caused amavis children to get stuck.
> 
> -ben

maybe worthwhile to look if it uses to daemonized version of clam (clamd not 
clamav)

-- 
Best regards
Thomas Spuhler

All of my e-mails have a valid digital signature
ID 60114E63
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