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From Alan Conway <acon...@redhat.com>
Subject c++: performance of new vs. old API
Date Thu, 22 Apr 2010 17:29:56 GMT
I'm happy to report that after appropriate tuning of the tests, the new API 
seems to perform as well as the old for basic thruput/latency tests. Detailed 
results attached.

The main change since my previous mail on the subject was to disable setting 
sequence number and timestamp properties and compare results with a reliable 
receiver - all fair changes since they are equivalent to what perftest does.

There is one mystery with the new api: an unreliable sender is _slower_ than 
reliable sender. As far as I can see by inspection and profiling, an unreliable 
sender does strictly less work than reliable one so this puzzles me. If anyone 
has a theory I'd love to hear it!


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