Date: Tue, 5 Aug 2003 16:40:06 -0400 (EDT) From: "Jason Lieurance" <jason@vipersystems.biz> To: <freebsd-questions@freebsd.org> Subject: Hard drive performance question Message-ID: <2948.192.168.1.150.1060116006.squirrel@www.vipersystems.biz>
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Hello, 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 0 14 0 190092 40896 7 0 0 0 17 0 15 0 244 114 21 0 0 100 0 14 0 189720 40896 7 0 0 0 15 0 12 0 241 116 21 0 0 100 0 14 0 189720 40896 6 0 0 0 12 0 10 0 239 96 18 0 0 100 0 14 0 86860 40896 7 0 0 0 15 0 12 0 241 117 21 0 0 99 1 14 0 86860 40912 6 0 0 0 13 0 11 0 241 100 18 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. -- Jason
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