netty5/microbench
buchgr 67d3a78123 Reduce bytecode size of PlatformDependent0.equals.
Motivation:

PP0.equals has a bytecode size of 476. This is above the default inlining threshold of OpenJDK.

Modifications:

Slightly change the method to reduce the bytecode size by > 50% to 212 bytes.

Result:

The bytecode size is dramatically reduced, making the method a candidate for inlining.
The relevant code in our application (gRPC) that relies heavily on equals comparisons,
runs some ~10% faster. The Netty JMH benchmark shows no performance regression.

Current 4.1:

PlatformDependentBenchmark.unsafeBytesEqual      10  avgt   20     7.836 ±   0.113  ns/op
PlatformDependentBenchmark.unsafeBytesEqual      50  avgt   20    16.889 ±   4.284  ns/op
PlatformDependentBenchmark.unsafeBytesEqual     100  avgt   20    15.601 ±   0.296  ns/op
PlatformDependentBenchmark.unsafeBytesEqual    1000  avgt   20    95.885 ±   1.992  ns/op
PlatformDependentBenchmark.unsafeBytesEqual   10000  avgt   20   824.429 ±  12.792  ns/op
PlatformDependentBenchmark.unsafeBytesEqual  100000  avgt   20  8907.035 ± 177.844  ns/op

With this change:

PlatformDependentBenchmark.unsafeBytesEqual      10  avgt   20      5.616 ±   0.102  ns/op
PlatformDependentBenchmark.unsafeBytesEqual      50  avgt   20     17.896 ±   0.373  ns/op
PlatformDependentBenchmark.unsafeBytesEqual     100  avgt   20     14.952 ±   0.210  ns/op
PlatformDependentBenchmark.unsafeBytesEqual    1000  avgt   20     94.799 ±   1.604  ns/op
PlatformDependentBenchmark.unsafeBytesEqual   10000  avgt   20    834.996 ±  17.484  ns/op
PlatformDependentBenchmark.unsafeBytesEqual  100000  avgt   20   8757.421 ± 187.555  ns/op
2016-09-09 07:57:41 +02:00
..
src Reduce bytecode size of PlatformDependent0.equals. 2016-09-09 07:57:41 +02:00
pom.xml [maven-release-plugin] prepare for next development iteration 2016-08-26 10:06:32 +02:00
README.md Fix wiki link 2014-02-14 12:04:12 -08:00

Microbenchmark tests

See our wiki page.