Date: Tue, 5 Aug 2003 17:03:22 -0400 (EDT) From: "Jason Lieurance" <jason@vipersystems.biz> To: <dnelson@allantgroup.com> Cc: FreeBSD Mailing List <freebsd-questions@freebsd.org> Subject: Re: Hard drive performance question Message-ID: <3226.192.168.1.150.1060117402.squirrel@www.vipersystems.biz> In-Reply-To: <20030805204742.GB88387@dan.emsphone.com> References: <2948.192.168.1.150.1060116006.squirrel@www.vipersystems.biz> <20030805204742.GB88387@dan.emsphone.com>
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Hello, Ok, I guess I thought 14 was high but it's ok then? I'm not sure what is acceptible but I guess sometimes I thought it would go down instead of always being constant. So I assumed(ignorantly) that there is a disk i/o problem. -- Jason Dan Nelson said: > In the last episode (Aug 05), Jason Lieurance said: >> I have FreeBSD 4.7 server running a qmail-imap-squirrelmail email server and a >> apache 1.3.27 web server hosting 6 virtual domains that don't get a lot of >> traffic. >> >> Hardware is: >> >> P3 933MHz CPU >> 512 DDR ram >> Fujitsu MAN3184MP 18.2 GB U160 10K rpm 8MB buffer 2.9 ms access Hard drive >> Adaptec 29160LP U160 SCSI controller >> >> When I run vmstat, I get: >> >> procs memory page disks faults CPU >> r b w avm fre flt re pi po fr sr da0 md0 in sy cs us sy id 0 >> 14 0 184016 40900 26 0 0 0 31 0 0 0 245 839 28 1 1 98 0 >> 14 0 86940 40896 7 0 0 0 15 0 12 0 242 115 21 0 0 99 0 >> 14 0 81460 40896 6 0 0 0 12 0 10 0 239 98 18 0 0 100 0 >> 14 0 85172 40896 7 0 0 0 15 0 14 0 243 116 21 0 1 99 0 >> 14 0 190092 40896 32 0 0 0 37 0 10 0 250 220 35 0 0 100 >> >> I've read this is a disk access problem where process are waiting on the disk. >> As you can see this is a constant but I thought the disk system I have was >> sufficient. Any thoughts, analysis, or other is appreciated, thanks. > > I see only 10-15 I/Os per second on your disk, which would overload a floppy drive > but nothing else. What problem specifically are you > trying to fix? > > -- > Dan Nelson > dnelson@allantgroup.com > _______________________________________________ > freebsd-questions@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-questions > To unsubscribe, send any mail to "freebsd-questions-unsubscribe@freebsd.org"
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