Date: Fri, 9 Jul 1999 20:30:30 +1200 From: "Dan Langille" <junkmale@xtra.co.nz> To: David Greenman <dg@root.com> Cc: freebsd-questions@FreeBSD.ORG Subject: Re: Uptime basics!!! Message-ID: <19990709083321.GYOW112692.mta2-rme@wocker> In-Reply-To: <199907090241.TAA04489@implode.root.com> References: Your message of "Fri, 09 Jul 1999 11:50:04 %2B1000." <002201bec9ad$5d7d4ad0$4001a8c0@tasajohns.turnaround.com.au>
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On 8 Jul 99, at 19:41, David Greenman wrote: > Uh, no, that is not what the load average means. The load average is a > composite number that includes both runnable processes and processes that > are blocked in a short term wait (usually disk I/O). This means that for > machines that are doing heavy disk I/O, the load average could be quite > high even when the CPU is 95% idle. On wcarchive, for example, the load > average typically runs around 40-50 with 50% CPU idle time. This may sound > high, but there are 38 disk drives on the machine, so although the drives > are fairly busy, the I/O is spread out over all of them - keeping the > interactive response time low and overall performance quite high. Where is this documented? I was trying to locate just this very information during the past week. Nothing in man uptime. If it belongs there, I volunteer to update it. How? -- Dan Langille - DVL Software Limited The FreeBSD Diary - http://www.FreeBSDDiary.org/freebsd/ NZ FreeBSD User Group - http://www.nzfug.nz.freebsd.org/ The Racing System - http://www.racingsystem.com/racingsystem.htm To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message
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