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e12613a018
netty5/microbench
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buchgr e12613a018 Fix performance regression in FastThreadLocal microbenchmark. Fixes #4402 
Motivation:

As reported in #4402, the FastThreadLocalBenchmark shows that the JDK ThreadLocal
is actually faster than Netty's custom thread local implementation.

I was looking forward to doing some deep digging, but got disappointed :(.

Modifications:

The microbenchmark was not using FastThreadLocalThreads and would thus always hit the slow path.
I updated the JMH command line flags, so that FastThreadLocalThreads would be used.

Result:

FastThreadLocalBenchmark shows FastThreadLocal to be faster than JDK's ThreadLocal implementation,
by about 56% in this particular benchmark. Run on OSX El Capitan with OpenJDK 1.8u60.

Benchmark                                    Mode  Cnt      Score      Error  Units
FastThreadLocalBenchmark.fastThreadLocal    thrpt   20  55452.027 ±  725.713  ops/s
FastThreadLocalBenchmark.jdkThreadLocalGet  thrpt   20  35481.888 ± 1471.647  ops/s
2015-10-29 21:46:04 +01:00
..
src/test Fix performance regression in FastThreadLocal microbenchmark. Fixes #4402 2015-10-29 21:46:04 +01:00
pom.xml Allow to disable reference count checks on every access of the ByteBuf 2015-10-15 10:19:49 +02:00
README.md Fix wiki link 2014-02-14 12:04:28 -08:00

README.md

Microbenchmark tests

See our wiki page.