>The fact that two runs of the same work on the same system at similar times 
>may vary by 10%-20% in CPU time is what I would call completely unreliable.

That would make all Capacity forecasts completely unreliable, since getting it 
within 20% is considered a job well done.

>1%-2% can be called variable, but 10%-20% is a major difference that cannot be 
>simply accounted for, except by throwing out low and high values from multiple 
>runs as was suggested earlier in the thread

But, if you're using it for chargeback, in the real world, you don't have the 
luxury of throwin it out.

-
Too busy driving to stop for gas!

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