"Katsuhiko Okano" <[EMAIL PROTECTED]> wrote
> The problem has occurred in my customer.
> poor performance with Context Switch Storm occurred
> with the following composition.
> Usually, CS is about 5000, WIPS=360.
> when CSStorm occurrence, CS is about 100000, WIPS=60 or less.
> Intel Xeon 3.0GHz*4(2CPU * H/T ON)
> 4GB Memory

Do you have bgwriter on and what's the parameters? I read a theory somewhere
that bgwriter scan a large portion of memory and cause L1/L2 thrushing, so
with HT on, the other backends sharing the physical processor with it also
get thrashed ... So try to turn bgwriter off or turn HT off see what's the


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