Stream Fusion Benchmark

It's a benchmark that puts together:

• eo-maven-plugin
• jeo-maven-plugin
• eo-phi-normalizer

The goal is to test the performance of Java Stream API before the "stream fusion" optimization and after it, then comparing the results. Intermediate artifacts are in this summary.html. We partially reuse the benchmark earlier suggested by Biboudis et al. and used by Møller et al..

This is the summary of the tests performed by openjdk 23.0.1 on 2024-11-07 at 16:27 on Linux with 4 CPUs in this GHA run (the numbers are in milliseconds):

Test method	Before	After	Diff
Big.plain	30.85	35.40	-4.55
Big.streams	131.71	124.05	7.66
Squares.sum	38.59	38.29	0.31
Squares.sumOfEvenSquares	48.05	58.12	-10.07
Squares.sumOfEvenSquaresSeq	67.89	68.11	-0.23
Squares.sumOfSquares	39.76	39.18	0.57
Squares.sumOfSquaresSeq	40.07	38.98	1.09

The entire test took 1029 seconds.

How to Contribute

Fork repository, make changes, then send us a pull request. We will review your changes and apply them to the master branch shortly, provided they don't violate our quality standards. To avoid frustration, before sending us your pull request please run full build:

make

You will need Maven 3.3+ and Java 11+ installed.