Date: Thu, 08 Feb 2001 04:16:19 -0800 From: Julian Elischer <julian@elischer.org> To: Dan Phoenix <dphoenix@bravenet.com> Cc: Matt Dillon <dillon@earth.backplane.com>, Andrew Reilly <areilly@bigpond.net.au>, Alfred Perlstein <bright@wintelcom.net>, Andre Oppermann <oppermann@monzoon.net>, Rik van Riel <riel@conectiva.com.br>, Mike Silbersack <silby@silby.com>, Poul-Henning Kamp <phk@critter.freebsd.dk>, Charles Randall <crandall@matchlogic.com>, Jos Backus <josb@cncdsl.com>, freebsd-hackers@FreeBSD.ORG Subject: Re: vinum and qmail (RE: qmail IO problems) Message-ID: <3A828E13.85E60B98@elischer.org> References: <Pine.BSO.4.21.0102080336030.3495-100000@gandalf.bravenet.com>
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Dan Phoenix wrote:
>
> Yes I did and it made some real differences. I enabled it on /usr as well
> as /var and mounted /var with the noatime option. Doing not bad for the
> amount of email it is pushing....thing is this I/O problem never use to be
> an issue....but with growth constantly happening it has come to a hardware
> based solution. What I have recommended to the company is a scsi card in
> that machine with 2 scsi drives.....I will raid 0 then together with ccd
> or venim and mount it as /var....turn existing /var into extra swap
> space.....although i may thing of something else...as I don;t think it
> needs a gig of swap... and that should fix the I/O issue incredibly.
> Right now I have split up the load also between2 machines so that has
> helped out incredibly....but systat -vmstat is still always showing 100%
> disk usage so I will have to remedy the problem. Then I plan on moving all
> mail back to that one machine and beating the shit right out of that
> freebsd machine to see what freebsd can really handle. If anyone has some
> nice newbie docs :) on ccd or venim would be greatly appreciated.
Don't forget to put logging and other such things on a separate drive..
even a small 1G drive as a secondary will be ok, as long as it has soft
updates and doesn't share heads with the work area..
vmstat 1 and iostat 1 output would be intersting.
--
__--_|\ Julian Elischer
/ \ julian@elischer.org
( OZ ) World tour 2000-2001
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