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Old 11-17-2006
guttew guttew is offline
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Join Date: Nov 2006
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AIX p5 virtual processors setting

Have a p570 LPAR capped/smt set to 4 physical processors. And currently have virtual processors set to 6 which gives 12 logical processors at AIX. This is for an Oracle9i database server running 4 instances.

What should virtual processors be set to? at least initially?
And how to determine when to increase/decrease?

I did read something about setting virtual processors to high can cause ovehead....

Thanks.
 

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