See my overview at <a href="https:&#x2F;&#x2F;github.com&#x2F;rurban&#x2F;smhasher#smhasher" rel="nofollow">https:&#x2F;&#x2F;github.com&#x2F;rurban&#x2F;smhasher#smhasher</a><p>5x faster depends on the context with such benchmarks. They are only useful for file or big buffer digests, but not for the general usage in a hash table, with small buffers and needed small code size. FNV1 still beats all those bigger hash functions, based on the new crc32c or aes intrinsics.<p>So, CityHash is deprecated. If you want to ask, ask about FarmHash, its successor. MetroHash beats it. MetroHash also beats xxHash64 in all aspects.