On Thu, 29 Dec 2016, Darko Volaric wrote:

What are you basing that theory on?

Perf is claimed to provide very good results but they are real results based on real measurements. Due to this, the measured results are very different for the first time the program is executed and the second time it is executed. Any other factor on the machine would impact perf results.

It seems that cachegrind produces absolutely consistent results which do not depend on I/O, multi-core, or VM artifacts.

Bob
--
Bob Friesenhahn
bfrie...@simple.dallas.tx.us, http://www.simplesystems.org/users/bfriesen/
GraphicsMagick Maintainer,    http://www.GraphicsMagick.org/
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