This is not an answer per se, but the first question I always ask is "what has
hapenned lately?" Look at any recent jobs, changed programs, new or transformed
databases. Then check the syslogs for nasty events such as BAD UFID's or a
report of a misfiring SCSI card. Then after you finish, get a second set of
eyes to do it all over again. Since you have SOS I'd checked the traditional
amount of CPU the system processes take versus what they are taking now. This
might give you a hint where to check next.

Also, use SOS to check to see if a particular drive is being hammered, perhaps
one is going south, though you should be able to see thar in the syslogs or by
using STM to strip the error log on the drives.

Paul
Courry

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