RE: Large queue and iowait

[Mark Douglas]

Title: RE: Large queue and iowait







> -Original Message-
> From: Dave Sill [mailto:[EMAIL PROTECTED]]
> Sent: Tuesday, July 17, 2001 13:32
> To: [EMAIL PROTECTED]
> Subject: Re: Large queue and iowait
> 
> 
> Jake Roersma <[EMAIL PROTECTED]> wrote:
> 
> >I would check to see if qmail-send has a defunct process.. 
> You will need to
> >restart it or restart qmail altogether and make sure there 
> are no stray
> >proceses that may interfere. I've had multiple instances 
> where the queue
> >becomes abnormally large because qmail-send is defunct..
> 
> That ain't right. qmail-send doesn't doesn't just go defunct. I'd
> suspect a kernel bug. What OS are you using?
> 
> -Dave
> 


See my original e-mail for this info. (Quick answer: Solaris 8).


Mark

Re: Large queue and iowait

[Dave Sill]

Jake Roersma <[EMAIL PROTECTED]> wrote:

>I would check to see if qmail-send has a defunct process.. You will need to
>restart it or restart qmail altogether and make sure there are no stray
>proceses that may interfere. I've had multiple instances where the queue
>becomes abnormally large because qmail-send is defunct..

That ain't right. qmail-send doesn't doesn't just go defunct. I'd
suspect a kernel bug. What OS are you using?

-Dave

Re: Large queue and iowait

[Henning Brauer]

On Tue, Jul 17, 2001 at 12:47:16PM -0400, Mark Douglas wrote:
> Solaris 8
 ^^^
This is your problem.

-- 
* Henning Brauer, [EMAIL PROTECTED], http://www.bsws.de *
* Roedingsmarkt 14, 20459 Hamburg, Germany   *
Unix is very simple, but it takes a genius to understand the simplicity.
(Dennis Ritchie)

Re: Large queue and iowait

[Jake Roersma]

On 2001.07.17 12:47 Mark Douglas wrote:
> I'm having some problems with my qmail server. It seems to be taking an
> abnormally large amount of time to do queue processing. A recent mailing
> list send of 250k e-mail's to the server had it stuck in queue processing
> with iowait at 80-100% the entire time, for over 36 hours. I assume this
> is
> not a "normal" timeframe for processing that amount of e-mail.
> 
> The setup is as follows:
> 
> Sun Netra t1 - 450mhz ultrasparcII processor
> 1024MB of memory, 1.5GB of swap
> 18GB SCSI disk.
> Solaris 8
> qmail 1.03 with DNS and big-concurrency patch
> 
> If any other information is pertinent, please let me know and I'll
> provide
> it. Any insight into what the problem could be would be greatly
> appreciated.
> 
> Thanks,
> 
> Mark
> --
> s/root/Mark
> 
> 
> 
> 
> 
> 
> Large queue and iowait
> 
> 
> 
> I'm having some problems with my qmail server. It seems
> to be taking an abnormally large amount of time to do queue processing. A
> recent mailing list send of 250k e-mail's to the server had it stuck in
> queue processing with iowait at 80-100% the entire time, for over 36
> hours. I assume this is not a "normal" timeframe for processing
> that amount of e-mail.
> 
> The setup is as follows:
> 
> 
> Sun Netra t1 - 450mhz ultrasparcII processor
> 1024MB of memory, 1.5GB of swap
> 18GB SCSI disk.
> Solaris 8
> qmail 1.03 with DNS and big-concurrency patch
> 
> 
> If any other information is pertinent, please let me know
> and I'll provide it. Any insight into what the problem could be would be
> greatly appreciated.
> 
> Thanks,
> 
> 
> Mark
> --
> s/root/Mark
> 
> 
> 
> 
> 
I would check to see if qmail-send has a defunct process.. You will need to
restart it or restart qmail altogether and make sure there are no stray
proceses that may interfere. I've had multiple instances where the queue
becomes abnormally large because qmail-send is defunct.. It should reload
and you will see preprocessed mails grow until it spits everything out.

-- 
Jake Roersma
Network Engineer
Triton Technologies Inc.
(800)-837-4253/364-8761