Re: [exim] Please Help with performance tuning

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Auteur: Mike Cardwell
Date:  
À: exim-users
Sujet: Re: [exim] Please Help with performance tuning
Ricardo Kleemann wrote:

>> I'm new to Exim, I've been using it for a short time and have been reading
>> up on how it works.
>>
>> I have a Debian linux server running Exim, and another server running
>> mailman is using the Exim server as a relay, so all deliveries to the list
>> are done through Exim.
>>
>> I have a large list in mailman, with SMTP_MAX_RCPTS set to 10 and I see in
>> the Exim log all of the incoming messages for the list:
>>
>> grep -c "<= list-bounces" exim_stage1/mainlog |more
>> 4361
>>
>> So basically I see there are 4361 queue entries for the list, (only 1
>> message sent to the list).
>>
>> Now, many hours later, I would expect a significant number of deliveries.
>> I have Exim logging to show the F= to make it easier to track down. But
>> I'm very surprised to see that there are only a very few messages actually
>> processed for delivery.
>>
>> grep -c "F=<reflexoes-bounces" exim_stage1/mainlog
>> 1344
>>
>> (I know this includes both successful deliveries as well as any temporary
>> or permanent failures -- the point here is that after 8 hours, 1344
>> messages processed is way too little)
>>
>> Now taking the last couple successful deliveries as an example, here's
>> what I see:
>>
>> 2009-08-08 21:37:43 1MZssc-0002HX-7E => melnicky@???
>> F=<list-bounces@???> R=dnslookup T=remote_smtp
>> H=vip-us-br-mx.terra.com [208.84.244.133] C="250 2.0.0 Ok: queued as
>> 359AB700000E1" QT=7h46m37s DT=1s
>> 2009-08-08 21:37:45 1MZssc-0002HX-7E => olivatto@???
>> F=<list-bounces@???> R=dnslookup T=remote_smtp
>> H=howard.atarde.com.br [187.1.111.123] C="250 Ok: queued as 82EAA3F94B4"
>> QT=7h46m39s DT=3s
>>
>> both these deliveries spent almost 8 full hours in the queue!
>>
>> The incoming queue right now still has over 4600 entries waiting to be
>> flushed out or completed.
>>
>> What am I doing wrong, how can Exim be configured so at least it can
>> process all of the incoming queue entries in a timely fashion?
>>
>> Also the server is not loaded at all, it's quite idle.
>>
>> # w
>> 21:40:51 up 9 days, 7:10, 1 user, load average: 0.78, 0.38, 0.20
>>
>> In my previous setup this large list would be delivered in just a couple
>> of hours. With my Exim setup, after 8, it's barely making a dent.


How many queue runners do you have? Have you tried increasing it so that
Exim can deliver more messages concurrently?

--
Mike Cardwell - IT Consultant and LAMP developer
Cardwell IT Ltd. (UK Reg'd Company #06920226) http://cardwellit.com/