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SubjectRe: Interesting scheduling times - NOT
Date
Oliver Xymoron <oxymoron@waste.org>:
: > : This is not really true, especially for something like make. If you
:
: > The claim was that cache interference would explain variations in run
: > times of 70-100%.
:
: I agree that this is not likely the proper explanation.

That's cool, that was all I wanted to establish.

: > My counter claim was that if that were true, things
: > like make would not be deterministic.
:
: But this is also not likely true. As long as the number of cache accesses
: (hits or misses) is relatively high, ie high enough that the cache gets
: turned over fairly frequently, the variances of individual cache access
: timings tend to cancel each other out.

Yes, that's true - and also holds true for the benchmark. I think what you
are saying here is that you shouldn't be seeing high variance in either
the make or the context switch case.

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