[CrendKing]

According to my test, xxhash-rust does have significant edge over TwoX-Hash. However, it is still slower than GxHash.

  gxhash
    | 4 > 8300.74
    | 8 > 16684.68
    | 16 > 33121.69
    | 32 > 38146.97
    | 64 > 57805.72
    | 128 > 49712.76
    | 256 > 69277.29
    | 512 > 88315.11
    | 1024 > 97135.29
    | 2048 > 98200.60
    | 4096 > 104709.01
    | 8192 > 108988.86
    | 16384 > 110630.70
    | 32768 > 111406.96

  xxhash (twox_hash)
    | 4 > 1291.20
    | 8 > 2579.19
    | 16 > 6029.70
    | 32 > 10281.18
    | 64 > 15950.47
    | 128 > 22031.84
    | 256 > 17929.12
    | 512 > 20728.87
    | 1024 > 21683.24
    | 2048 > 21679.94
    | 4096 > 21732.89
    | 8192 > 21748.57
    | 16384 > 21534.84
    | 32768 > 21703.27

  xxhash (xxhash-rust)
    | 4 > 1968.26
    | 8 > 3946.71
    | 16 > 8030.94
    | 32 > 13099.80
    | 64 > 19073.49
    | 128 > 23469.46
    | 256 > 22909.73
    | 512 > 33117.15
    | 1024 > 42467.53
    | 2048 > 54638.44
    | 4096 > 63193.78
    | 8192 > 68677.38
    | 16384 > 71658.92
    | 32768 > 71421.18