benalexau/hash-bench

Java Hashing, CRC and Checksum Benchmark (JMH)

hash-bench's Issues

Add t1ha to comparison

Please pay attention to https://github.com/PositiveTechnologies/t1ha
Regards.

add benchmark cases for stream version hash

Now we have three type of inputs: byte[], ByteBuffer and DIrectBuffer. In many real scenarios, the input will be objects to be serialized to bytes or an io stream with uncertain length. Some hash implementation provide streaming api (e.g. Guava Hasher), which are verify convenient for these cases, and should have better performance.

We can split a fixed length byte[] array into some small pieces, and feed into a streaming api hash algo. A default streaming api to wrap a hash with only at-once api just records all updated bytes into a ByteBuffer, and calculate the whole result at once in finally().

ZAH 0.5

ZAH 0.5 is released. It has no changes compared to the version benchmarked, so the tests shouldn't be re-run, just running/building process simplified, depending on the release 0.5 version.

Extend with checksum algorithms

The fact that the fastest hash function (xx64) even slightly outperforms crc32 raises the question: what is the fastest checksum algorithm available in Java? Excluding unreliable "algorithms" like plain xor-ing all words of the data.

I haven't explored this field deeply, but probably this page: https://en.wikipedia.org/wiki/List_of_hash_functions will give some options that might be faster than xx64.