[Mimedefang] memory leak?

[Stephen Smoogen]

On Thu, 12 Feb 2004, Ron Peterson wrote:

>
>On Wed, 11 Feb 2004, David F. Skoll wrote:
>
>> On Wed, 11 Feb 2004, Jonas Eckerman wrote:
>> 
>> > With most soplutions using an embedded perl interpreter, the perl
>> > interpreter is never unlodaded. This means that if the perl
>> > interpreter itself has memory leaks, those can accumulate over time.
>> 
>> Correct.  But read the multiplexor source code to see how we defend against
>> this.
>
>Well, it happened again.  I was running embedded perl, 15 min slaves, 50
>max slaves.  At the time this happened, the max slaves limit got hit.
>
>There were 200+ sendmail processes running at this time.  No single
>process was consuming any great amount of memory.  Swap utilization was
>creeping up, but not high.  The load average shot over 100, and the CPU
>free dropped from it's usual 80-90 to around 10.
>
>Other network applications started throwing errors at this time
>also: apache and imapproxyd are the ones I noticed.  I killed all
>sendmail, mimedefang, apache, and imapproxyd processes, but nothing
>brought the machine back.  I had to run over and use console because the
>ssh connections I had were almost unuseable.
>
>I'm somewhat suspicious the broadcom network interfaces / tg3 driver may
>be involved.  I've started logging /proc/net/dev once a minute to see if
>the interfaces start throwing errors.  I also started logging vmstat
>output every fifteen seconds.  Anything else anyone would recommend
>logging?
>
>I'm now running without embedded perl, min slaves set to 25, and max
>set to 100.  I'd like to be more scientific about exploring the boundary
>conditions, but I'm more interested in getting things stable...
>

A couple of things.. do you have NFS mounts (I cant remember), and are 
processes in a D state when you see them... 


-- 
Stephen John Smoogen		smoogen at lanl.gov
Los Alamos National Lab  CCN-5 Sched 5/40  PH: 4-0645
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-- So shines a good deed in a weary world. = Willy Wonka --