Date: Wed, 7 Feb 2001 15:08:43 -0800 From: Alfred Perlstein <bright@wintelcom.net> To: Dan Phoenix <dphoenix@bravenet.com> Cc: Matt Dillon <dillon@earth.backplane.com>, freebsd-hackers@FreeBSD.ORG Subject: Re: vinum and qmail (RE: qmail IO problems) Message-ID: <20010207150843.R26076@fw.wintelcom.net> In-Reply-To: <Pine.BSO.4.21.0102071333350.9863-100000@gandalf.bravenet.com>; from dphoenix@bravenet.com on Wed, Feb 07, 2001 at 01:41:29PM -0800 References: <200102072131.f17LVQv94265@earth.backplane.com> <Pine.BSO.4.21.0102071333350.9863-100000@gandalf.bravenet.com>
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* Dan Phoenix <dphoenix@bravenet.com> [010207 13:42] wrote: > > > Yes maxusers stopped the dmesg errors....it seemed. Only thing I do not > like to much about postfix is that it only tries one MX record and then > does not try any others...."default"....yes there is still backlog with > #'s I gave you. Right now 8 min to get an email from sending... I don't think Matt means 'backlog' as in latency, I think he means backlog as in your backup MX's queing mail for you while you rebooted and installed FreeBSD. If you have that much mail _incoming_ then every time you sneeze and stop processing the queue even for a few seconds you can suddenly wind up with a massive amount of inocming mail the second your server comes online again. This will swamp you and knock the box over. > > :ps. 600 megs of email was calculated in 1 day on this machine...today i > > :will be splitting up the load and looking into vinum. Get a hardware raid card, you can even get a bootable IDE RAID, although hotswap scsi means less downtime. For a project this big you're really being pretty thrifty with the hardware allocated to it. The time you save hacking on the system to fix performance problems could be addressed much quicker by buying somewhat more robust hardware, once that's addressed you can move on to the next project. IDE raid (striping) won't cost more than three to five hundred dollars including the disks you need. -- -Alfred Perlstein - [bright@wintelcom.net|alfred@freebsd.org] "I have the heart of a child; I keep it in a jar on my desk." To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message
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