Date: Fri, 23 Jun 2006 18:08:14 -0400 From: Charles Swiger <cswiger@mac.com> To: Marc G. Fournier <scrappy@hub.org> Cc: freebsd-stable@freebsd.org Subject: Re: vmstat 'b' (disk busy?) field keeps climbing ... Message-ID: <261AD16B-C3FE-4671-996E-563053508CE8@mac.com> In-Reply-To: <20060623172557.H1114@ganymede.hub.org> References: <20060623172557.H1114@ganymede.hub.org>
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On Jun 23, 2006, at 4:44 PM, Marc G. Fournier wrote: > procs memory page disks > faults cpu > r b w avm fre flt re pi po fr sr da0 pa0 in sy > cs us sy id > 1 42 1 10249060 161668 1290 54 12 3 1409 2202 102 0 751 > 6416 3350 24 15 61 > 0 39 0 10148976 148104 654 10 5 2 660 0 49 0 615 4440 > 2584 18 9 73 > > the last time it hung, it hit about 45 ... about 6 hours ago, it > was at ~5-10 ... anything I should look at to figure out where > those 39+ are 'busy'? 'b' stands for "blocked", not "busy". Judging by your page fault rate and the high number of frees and pages being scanned, you're probably swapping tasks in and out and are waiting on disk. Take a look at "vmstat -s", and consider adding more RAM if this is correct... > The system is running a May 25th kernel of FreeBSD 6-STABLE .. Dual- > PIII ... -- -Chuck
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