------------------------------------<snip>----------------------------------
Thanks for asking. We are still trying to evaluate the situation. So
far, we are leaning towards degraded I/o performance. Of course elapsed
times have gone up, but not due to CPU constraint. It is a pretty
elusive situation.
---------------------------------<unsnip>----------------------------------
Sounds to me like time for a serious I/O analysis. No "simple" way to do
this; you just pore through reports, maing notes and comparisons.
Are you doing any DASD mirroring? If this is the case, the problem
becomes even more elusive; you'll have to compare mirrored volumes with
non-mirrored volumes for comparable I/O rates.
IIRC, when the mirror gets overloaded, it starts to disable the CPU-DASD
paths in an effort to catch up; in the worst case, you may find yourself
running a single path to the "distressed" DASD.
HTH. Rick.......
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