--- On Tue, 1/11/11, Stuart Rowan <[email protected]> wrote:
> > CauBa wrote, on 11/01/11 01:51: > > Dear exim users/developers, > > > > I upgraded exim from 4.69 to 4.73 a few weeks ago due > to the vulnerability described in > "http://www.exim.org/lurker/message/20101210.164935.385e04d0.en.html"; > > > > > > Since then, I notice that my system struggles to keep > up with the volume of email that it had little problem > handling in 4.69 > > > > Has anyone else seen a similar behaviour ? > > > > The pertinent config settings are: > > > > received_headers_max = 40 > > message_size_limit = 20M > > recipients_max = 1000 > > queue_only = yes > > queue_run_max = 250 > > remote_max_parallel = 50 > > > > connection_max_messages = 750 > > > > system info: > > Linux 2.6.18-194.26.1.el5 #1 SMP > > dual quad E5540 @ 2.53GHz (16 logical > cores) > > 16GB RAM > > > > > > > > typical daily stats for 4.73: > > Grand total summary > > ------------------- > > > > > > At least one address > > TOTAL > Volume Messages > Addresses Hosts > Delayed Failed > > Received > 87GB > 905747 > 99 6693 > 0.7% 0 0.0% > > Delivered > 110GB 1535583 > 1539352 14 > > Rejects > > 430 > 12 > > Temp Rejects > > 3284 > 27 > > > > > > Time spent on the queue: all messages > > ------------------------------------- > > > > Under 1m > 23750 3.1% 3.1% > > 5m > 47952 6.2% 9.3% > > 15m > 43763 5.7% 15.0% > > 30m > 44933 5.8% 20.8% > > 1h > 86275 11.2% 32.0% > > > 3h 240461 > 31.2% 63.3% *****only 63% after > 3h**** > > > 6h 181135 > 23.5% 86.8% > > 12h > 89728 11.7% 98.5% > > 1d > 6163 0.8% 99.3% > > Over 1d > 5551 0.7% 100.0% > > > > Time spent on the queue: messages with at least one > remote delivery > > > ------------------------------------------------------------------- > > > > Under 1m > 23750 3.1% 3.1% > > 5m > 47952 6.2% 9.3% > > 15m > 43763 5.7% 15.0% > > 30m > 44933 5.8% 20.8% > > 1h > 86275 11.2% 32.0% > > > 3h 240461 > 31.2% 63.3% > > > 6h 181133 > 23.5% 86.8% > > 12h > 89728 11.7% 98.5% > > 1d > 6161 0.8% 99.3% > > Over 1d > 5551 0.7% 100.0% > > > > > > > > > > typical daily stats for exim-4.69-4 > > > > Grand total summary > > ------------------- > > > > > > At least one address > > TOTAL > Volume Messages > Addresses Hosts > Delayed Failed > > Received > 80GB > 789440 > 98 53523 > 6.8% 0 0.0% > > Delivered > 159GB 1572696 > 1582306 11 > > Rejects > > 950 > 3 > > Temp Rejects > 10250 > 16 > > > > > > Time spent on the queue: all messages > > ------------------------------------- > > > > > Under 1m 237858 > 30.2% 30.2% > > > 5m 149936 > 19.0% 49.2% > > > 15m 148053 > 18.8% 68.0% > > > 30m 112415 > 14.3% 82.3% > > 1h > 95188 12.1% 94.3% > > 3h > 44596 5.7% > 100.0% *****100% after 3h**** > > 6h > 2 0.0% 100.0% > > > > Time spent on the queue: messages with at least one > remote delivery > > > ------------------------------------------------------------------- > > > > > Under 1m 237858 > 30.2% 30.2% > > > 5m 149936 > 19.0% 49.2% > > > 15m 148053 > 18.8% 68.0% > > > 30m 112415 > 14.3% 82.3% > > 1h > 95188 12.1% 94.3% > > 3h > 44596 5.7% 100.0% > > 6h > 2 0.0% 100.0% > > > > > > > > Thank you in advance for anyone who takes the time to > look at this. > > > > Cau Ba > > > > > > > > > > From: Stuart Rowan <[email protected]> > Subject: Re: [exim] exim 4.7 slowness > To: [email protected] > Received: Tuesday, January 11, 2011, 11:53 AM > DKIM signatures get verified by > default in 4.7x (though pass/fail of > verification is merely logged rather than anything > unexpected) and I don't > think this was true in 4.69? > > Cheers, > Stu. Good point Stuart, the src/EDITME file indicates: #------------------------------------------------------------------------------ # By default Exim includes code to support DKIM (DomainKeys Identified # Mail, RFC4871) signing and verification. Verification of signatures is # turned on by default. See the spec for information on conditionally # disabling it. To disable the inclusion of the entire feature, set # DISABLE_DKIM to "yes" # DISABLE_DKIM=yes Might it also be this ? Since 4.70, NM/01 Bugzilla 657: Embedded PCRE removed from the exim source tree. When building exim an external PCRE library is now needed - PCRE is a system library on the majority of modern systems. See entry on PCRE_LIBS in EDITME file. non-embedded PCRE is used for versions 4.70 and greater. I wonder if that also has a performance impact. Interesting. C. -- ## List details at http://lists.exim.org/mailman/listinfo/exim-users ## Exim details at http://www.exim.org/ ## Please use the Wiki with this list - http://wiki.exim.org/
