:The cache and most of the execution hardware is shared. The execution
:units can run something like 4 instructions per clock. If the "idle"
:logical core is in a spinloop, then it is generating instructions for
:execution, so you are dividing the execution resources between one context
:that is doing real work, and the other context that is burning off the
:"excess" resources. Overall, it is a huge loss. It is absolutely essential
:that logical cpus be halted when they are not doing useful work.
Ah, that makes sense. Are the two logical cpus shared 50-50?
-Matt
:Cheers,
:-Peter
:--
:Peter Wemm - [EMAIL PROTECTED]; [EMAIL PROTECTED]; [EMAIL PROTECTED]
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