Date: Tue, 20 Feb 2001 22:10:32 -0500 (EST) From: <scanner@jurai.net> To: Gordon Tetlow <gordont@bluemtn.net> Cc: Dan Phoenix <dphoenix@bravenet.com>, freebsd-hackers@FreeBSD.ORG Subject: Re: qmail IO--qmail vs postfix competition Message-ID: <Pine.BSF.4.21.0102202153170.78538-100000@sasami.jurai.net> In-Reply-To: <Pine.BSF.4.31.0102201845430.18356-100000@sdmail0.sd.bmarts.com>
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On Tue, 20 Feb 2001, Gordon Tetlow wrote:
> Well, as I said, these boxes are rather bored. I don't think the load
> reaches above 0.05. Most of the time is delivering mail trying to
> negotiate with destination hosts. I don't think that the mailers are IO
> bound, but I haven't really looked to find out to tell you the truth. Once
> the mailers are set up we treat them as black boxes. They just work.
Aye. So is the one I was mentioning. I keep trying to get it to do
more, but dan doesnt have any more mail to throw at it :-). It is totally
idle though. Yes that is also a problem with his site, a good chunk of the
mailings are to incorrect hotmeail.com, ecite.com, places :) And most of
the places have VERY slow front end mail servers like you noted. Wish
there was something one could do about that. But alas...
> Also, the 500K number, is that per day? The 4 million was in 4 hours, not
> a day.
Below is what he was doing on a single ATA disk. Not even ATA100.
Thehn we transitioned him to a 3 x 9.1GB IBM Deathstar Vinum RAID-0
stripe for /var/spool/postfix/. Not to shabby for a single disk IDE
server. I was impressed. And yes these are for 24h. I don't have stats on
the SCSI array yet. Hopefully I can get those tonight. But the IDE disk
below was totally hammered. Between Postfix slamming the disks until there
was no I/O left and logging on the same drive, it was pretty ugly to watch
:-)
Grand Totals
------------
messages
292315 received
288975 delivered
7 forwarded
6803 deferred (22932 deferrals)
28822 bounced
9 rejected
903m bytes received
930m bytes delivered
837 senders
485 sending hosts/domains
193110 recipients
28337 recipient hosts/domains
smtpd
100118 connections
15 hosts/domains
0 avg. connect time (seconds)
8:17:03 total connect time
=============================================================================
-Chris Watson (316) 326-3862 | FreeBSD Consultant, FreeBSD Geek
Work: scanner@jurai.net | Open Systems Inc., Wellington, Kansas
Home: scanner@deceptively.shady.org | http://open-systems.net
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