70k mqueue.in but load under 1 ??

[Furnish, Trever G]

I'm experiencing very similar symptoms here.  My queue is very backed
up, but my load average is much lower than normal, and I'm not noticing
an obvious cause.  Iowait is similarly low.

I've noticed that while mail is flowing in at a quick rate, the
MailScanner processing is not keeping up at all.  With 10 children and
batches of 30 messages each, I'm seeing batch processing taking 300
seconds per batch and that only translates to 1 message processed per
second.  Eyeballing the maillog I think I'm actually getting even less
than that.  System normally processes much more quickly.

I ran a batch using debugging for both MailScanner and SpamAssassin, but
it doesn't seem to have any timing info in the lines so after the batch
ran I can't tell how long each line took to appear.  Anyone know if
there's a way to get timing info in the spamassassin debugging output?

I'm thinking of trying to write a little perl script to accept the
output of MailScanner in debugging mode and inject timestamps after each
newline...

 

> -----Original Message-----
> From: mailscanner-bounces at lists.mailscanner.info 
> [mailto:mailscanner-bounces at lists.mailscanner.info] On Behalf 
> Of Tony Johansson
> Sent: Monday, November 27, 2006 6:47 AM
> To: mailscanner at lists.mailscanner.info
> Subject: Re: 70k mqueue.in but load under 1 ??
> 
> Martin,
> 
> I'm running Sendmail 8.13.1 with a 3 second greet_pause
> 
> maillog says:
> Nov 27 12:28:54 ms01 MailScanner[17258]: Creating hardcoded 
> struct_flock subroutine for linux (Linux-type) Nov 27 
> 12:32:59 ms01 MailScanner[17707]: Using locktype = posix
> 
> Regards, Tony
> 
> 
> 
> Martin Hepworth skrev:
> >>
> > Tony
> > 
> > what MTA?
> > 
> > Recent MS versions assume if you are using sendmail, it's 
> 8.13.x and 
> > thus the lock type is posix, not flock as is for v 8.12.x 
> and previous.
> > 
> > if you are using sendmail 8.12 you'll need to force the 
> lock type to 
> > 'flock' in mailScanner.conf.
> > 
> > Another issue is the way certain spam is using email, it 
> can cause a 
> > big problem with sendmail 8.12. Only solution is to upgrade to 8.13 
> > and use the greet_pause feature.
> > 
> > 
> 
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