Small research on fast non-cryptographic hash algorithms in Rust

Algorithms were tested on random u64 values and random size (10..100) strings consisting of random lowercase English letters.

Note: each iteration is hashing 1000 objects. All measurements are in ns/iter

string

Name	Median	Deviation
ahash	634	7
fastmurmur3	27948	338
highway	44904	1170
murmur3	57447	736
rustc_hash	634	6
seahash	29717	730
xxhash	12003	230

u64

Name	Median	Deviation
ahash	882	11
fastmurmur3	3839	106
highway	39459	920
murmur3	23009	373
rustc_hash	882	13
seahash	13301	319
xxhash	3593	117

As you can see, ahash and rustc-hash significantly outperform other algorithms. However, these algorithms are not silver bullets:

• Ahash is intended exclusively for use in in-memory hashmaps. Also, it's claimed to be DOS resistant, but this fact is not proven, as far as I know.
• rustc-hash is not DOS resistant.

If DOS resistance is crucial for you, consider highway.

Contribution

Feel free to add more algorihtms or improve the quality of results.