On Fri, Aug 17, 2007 at 01:35:48PM -0700, Mark Messier wrote: > >> What does a gstat look like over time? > > Oooh, didn't know about gstat.... it shows disks as being 102% busy > at times :-)
gstat's "busy" statistic is entirely meaningless for this context (rather, it has a meaning but it's not what you think it is). Instead you should be looking at the number of transactions/second and the average time/transaction. This tells how long processes are waiting before the disk controller can service the I/O, and you should compare those numbers to your performance requirements or your expectations from the hardware. Your data showed your CPU doing almost no work, so I/O is definitely your problem though. Kris
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