You need to tell us additional facts about the server that are relevant to the
question.
Eg, Is /var/qmail/queue on a separate partition?
What are the iostats like on each of the spindles?
How are you running qmail-smtpd?
what are your concurrency settings?
What pop server are you using?
Are the 66K mailboxes in user home directories all in /home?
What does qmail-qstat show?
Regards.
On Mon, Mar 27, 2000 at 10:53:27AM -0600, Greg Moeller wrote:
> Good day.
> We're running Qmail as a mainline ISP mailserver.
> Here's a few stats...
> 420,000 Email on the server.
> 27 Gig of disk space used for that Email.
> 66,000 local mailboxes.
> 300,000 Email delivered to local users/day.
> 200,000 Email delivered to remote sites/day.
> 600,000 POP mail accesses/day.
> 750 Virtual domains hosted on the server.
> 17,000 Mapping for those virtual domains.
>
> The box is an Ultra enterprise 450 with dual 330Mhz Ultrasparc II processors
> and an A1000 RAID array.
>
> Now, this poor box during the day is running with a load between 10 and 20
> and goes down to around 2 or 3 late at night.
>
> Normally it keeps up pretty good, but when there's heavy spamming it can start
> to get behind with between 10,000 and 20,000 Email in the queue. (there's
> never less than 1000 in the queue, waiting for remote delivery)
> The queue has to be cleaned very regularrly as Mailer Daemon email builds up
> in the queue at a rate of over 1000 per day.(all undeliverable)
>
> Now, the question is. What to do to get the poor box under control. I don't
> think it's CPU related but more IO problems.
>
> Anyone else running this large a Qmail instalation?
>
> I'm about to call Sun and ask them to make it better, but I'm not sure they'll
> be able to recommend much either.
>
> Greg
>
>
