On Thu, 14 Nov 2002, Sagi Bashari wrote:

> Hi,
>
> I just setuped a new server. It is only running postfix at this time,
> relaying mail from another server.
>
> The distribution is RedHat 7.3 with all of the updates.
>
> There is a large amount of mail in the queue (about 17k mails).
>
> The load average goes upto 8.x. If I kill postfix, it goes back down to
> 0.x. The strange thing is that top shows that the cpu usage is pretty low:
> CPU0 states:1.2% user,  3.2% system,  0.4% nice, 95.1% idle
> CPU1 states:1.4% user,  2.3% system,  0.4% nice, 95.3% idle

Looks like the machine is over-swapping.

>
> Hardware is not the problem. The machine is a dual Athlon MP 2000 with
> 1GB of DDRAM and 2 IDE hdds with 8MB cache in RAID1. It should be able
> to handle that kind of work without any problem.
>
> I'm using ext3.
>
> Any ideas/suggestions?

Maybe limit the number of postfix processes (of some kind?)

Use postfix's various concurrecy limitations.

Have a look at http://postfix.openu.ac.il/rate.html

-- 
Tzafrir Cohen
mailto:tzafrir@;technion.ac.il
http://www.technion.ac.il/~tzafrir


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