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Subject: Re: HyperThreading & Comp v Comp matches

Author: Andrew Platt

Date: 12:35:20 11/22/04

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On November 22, 2004 at 10:48:02, Steve Maughan wrote:

>So the question is - does the Task Manager report the CPU resource usage
>incorrectly in this situation i.e. 50% = 100% usage of 1 processor?  I'm
>reasonably sure that this is the case but wanted to check.

Whether you want to allow this or not, it is *not* being reported incorrectly.
All multi-processor systems I have worked on (Unix and Windows) report CPU at
the global level as the overall percentage across all CPUs. You then drop down
to the lower level to see the actual for each physical (or in this case logical)
CPU.

I guess you could show the percentage as 200% meaning two CPUs working at 100%
but I wouldn't find that helpful because as you scale up you would get higher
and higher percentages but no idea how much CPU bandwidth you have left.

Andy.



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