Hi Guy,
Given all of the recent data on how different memory allocator
configurations improve SimpleMessenger performance (and the effect of
memory allocators and transparent hugepages on RSS memory usage), I
thought I'd run some tests looking how AsyncMessenger does in
comparison. We spoke about these a bit at the last performance meeting
but here's the full write up. The rough conclusion as of right now
appears to be:
1) AsyncMessenger performance is not dependent on the memory allocator
like with SimpleMessenger.
2) AsyncMessenger is faster than SimpleMessenger with TCMalloc + 32MB
(ie default) thread cache.
3) AsyncMessenger is consistently faster than SimpleMessenger for 128K
random reads.
4) AsyncMessenger is sometimes slower than SimpleMessenger when memory
allocator optimizations are used.
5) AsyncMessenger currently uses far more RSS memory than SimpleMessenger.
Here's a link to the paper:
https://drive.google.com/file/d/0B2gTBZrkrnpZS1Q4VktjZkhrNHc/view
Mark
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