make run| Op | Default | AHash | Murmur | SeaHasher |
|---|---|---|---|---|
| build time | 441.487 | 12.979 | 462.289 | 141.508 |
| std dev | 283.269 | 259.322 | 274.551 | 294.800 |
| collision | 0 | 0 | 0 | 0 |
| Op | Default | AHash | Murmur | SeaHasher |
|---|---|---|---|---|
| build time | 46.265 | 12.492 | 174.967 | 82.611 |
| std dev | 263.976 | 266.246 | 275.889 | 272.080 |
| collision | 0 | 0 | 0 | 0 |
- Ahash is fastest, but it doesn't guarantee fixed hash code, so it's only recommended used in memory structures.
- Hash code generated by those hash is almost same(evenly distributed), no big difference.
- SeaHash generate fixed hash code, and its speed is not very bad, so it's suitable for on-disk/permanent storage.
- DefaultHash in std is pretty good, but hash code generated by it may change over rust release.