Date: Mon, 5 Feb 2001 13:55:01 -0800 From: Alfred Perlstein <bright@wintelcom.net> To: Dan Phoenix <dphoenix@bravenet.com> Cc: scanner@jurai.net, freebsd-hackers@FreeBSD.ORG, freebsd-question@FreeBSD.ORG Subject: Re: qmail IO problems Message-ID: <20010205135501.H26076@fw.wintelcom.net> In-Reply-To: <Pine.BSO.4.21.0102051342380.18264-100000@gandalf.bravenet.com>; from dphoenix@bravenet.com on Mon, Feb 05, 2001 at 01:49:09PM -0800 References: <Pine.BSF.4.21.0102051620100.27111-100000@sasami.jurai.net> <Pine.BSO.4.21.0102051342380.18264-100000@gandalf.bravenet.com>
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* Dan Phoenix <dphoenix@bravenet.com> [010205 13:50] wrote: > /0 /1 /2 /3 /4 /5 /6 /7 /8 /9 /10 > Load Average |||| > > /0 /10 /20 /30 /40 /50 /60 /70 /80 /90 /100 > cpu user|X > nice| > system|XXXXXX > interrupt| > idle|XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX > > /0 /10 /20 /30 /40 /50 /60 /70 /80 /90 /100 > ad0 MB/s > tps|XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX108.83 > > > that is why i know it is IO....#1. > #2..not configuration errors that I know of. > tailing the tcpserver current log shows lots of traffic comming in and > out.....yet it keep getting queued up......so my guess is the IO. > Post fix is not the solution...would be the exact same problem...a mail > deamon was to read each message to send them right? Same disk I/O problem > will occur. Btw who are you and when you say brad....who are you talking > about? Here's a couple of tunables you might want to try, use then one at a time and see if it improves things: vfs.vmiodirenable = 1 vfs.write_behind = 0 or 2 (default is 1) You might also want to consider a more robust disk subsystem, using a single IDE non-redundant disk for storing mail isn't such a hot idea. -- -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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