Hasher

This project contains Java implementation for the following fast non-cryptographic hash algorithms

• Murmur2 - 32, 64-bit variants
• Murmur3 - 32, 64, 128-bit variants
• XXHash - 64-bit variant
• FNV1 - 32, 64-bit variants
• FNV1A - 32, 64-bit variants

JMH Microbenchmark

Running locally

To run the benchmark on your local machine

git clone https://github.com/prasanthj/hasher.git

cd hasher

mvn clean install

To run all benchmarks

java -jar target/benchmarks.jar

(OR) with custom iterations (wi - warmup iterations, i - iterations, f - fork)

java -jar target/benchmarks.jar -wi 5 -i 10 -f 1

To run a specific benchmark

java -jar target/benchmarks.jar Benchmark32BitHash -wi 5 -i 10 -f 1

Results

NOTE: Its always good to run the benchmarks on your local machine as YMMV.

Latest results can be found here. All results are generated with the following setup.

Benchmark Setup

• Java version: 1.7.0_40 (64-Bit Server VM)
• Operating system: Mac OS X v10.10 (Yosemite)
• Processor: 2.7 GHz Intel Core i7
• Memory: 16GB 1600 MHz DDR3
• Storage: 500GB Flash Storage

Issues

Bug fixes or improvements are welcome! Please fork the project and send pull request on github. Or report issues here https://github.com/prasanthj/hasher/issues