README.md
1murmur3
2=======
3
4[](https://travis-ci.org/spaolacci/murmur3)
5
6Native Go implementation of Austin Appleby's third MurmurHash revision (aka
7MurmurHash3).
8
9Reference algorithm has been slightly hacked as to support the streaming mode
10required by Go's standard [Hash interface](http://golang.org/pkg/hash/#Hash).
11
12
13Benchmarks
14----------
15
16Go tip as of 2014-06-12 (i.e almost go1.3), core i7 @ 3.4 Ghz. All runs
17include hasher instantiation and sequence finalization.
18
19<pre>
20
21Benchmark32_1 500000000 7.69 ns/op 130.00 MB/s
22Benchmark32_2 200000000 8.83 ns/op 226.42 MB/s
23Benchmark32_4 500000000 7.99 ns/op 500.39 MB/s
24Benchmark32_8 200000000 9.47 ns/op 844.69 MB/s
25Benchmark32_16 100000000 12.1 ns/op 1321.61 MB/s
26Benchmark32_32 100000000 18.3 ns/op 1743.93 MB/s
27Benchmark32_64 50000000 30.9 ns/op 2071.64 MB/s
28Benchmark32_128 50000000 57.6 ns/op 2222.96 MB/s
29Benchmark32_256 20000000 116 ns/op 2188.60 MB/s
30Benchmark32_512 10000000 226 ns/op 2260.59 MB/s
31Benchmark32_1024 5000000 452 ns/op 2263.73 MB/s
32Benchmark32_2048 2000000 891 ns/op 2296.02 MB/s
33Benchmark32_4096 1000000 1787 ns/op 2290.92 MB/s
34Benchmark32_8192 500000 3593 ns/op 2279.68 MB/s
35Benchmark128_1 100000000 26.1 ns/op 38.33 MB/s
36Benchmark128_2 100000000 29.0 ns/op 69.07 MB/s
37Benchmark128_4 50000000 29.8 ns/op 134.17 MB/s
38Benchmark128_8 50000000 31.6 ns/op 252.86 MB/s
39Benchmark128_16 100000000 26.5 ns/op 603.42 MB/s
40Benchmark128_32 100000000 28.6 ns/op 1117.15 MB/s
41Benchmark128_64 50000000 35.5 ns/op 1800.97 MB/s
42Benchmark128_128 50000000 50.9 ns/op 2515.50 MB/s
43Benchmark128_256 20000000 76.9 ns/op 3330.11 MB/s
44Benchmark128_512 20000000 135 ns/op 3769.09 MB/s
45Benchmark128_1024 10000000 250 ns/op 4094.38 MB/s
46Benchmark128_2048 5000000 477 ns/op 4290.75 MB/s
47Benchmark128_4096 2000000 940 ns/op 4353.29 MB/s
48Benchmark128_8192 1000000 1838 ns/op 4455.47 MB/s
49
50</pre>
51
52
53<pre>
54
55benchmark Go1.0 MB/s Go1.1 MB/s speedup Go1.2 MB/s speedup Go1.3 MB/s speedup
56Benchmark32_1 98.90 118.59 1.20x 114.79 0.97x 130.00 1.13x
57Benchmark32_2 168.04 213.31 1.27x 210.65 0.99x 226.42 1.07x
58Benchmark32_4 414.01 494.19 1.19x 490.29 0.99x 500.39 1.02x
59Benchmark32_8 662.19 836.09 1.26x 836.46 1.00x 844.69 1.01x
60Benchmark32_16 917.46 1304.62 1.42x 1297.63 0.99x 1321.61 1.02x
61Benchmark32_32 1141.93 1737.54 1.52x 1728.24 0.99x 1743.93 1.01x
62Benchmark32_64 1289.47 2039.51 1.58x 2038.20 1.00x 2071.64 1.02x
63Benchmark32_128 1299.23 2097.63 1.61x 2177.13 1.04x 2222.96 1.02x
64Benchmark32_256 1369.90 2202.34 1.61x 2213.15 1.00x 2188.60 0.99x
65Benchmark32_512 1399.56 2255.72 1.61x 2264.49 1.00x 2260.59 1.00x
66Benchmark32_1024 1410.90 2285.82 1.62x 2270.99 0.99x 2263.73 1.00x
67Benchmark32_2048 1422.14 2297.62 1.62x 2269.59 0.99x 2296.02 1.01x
68Benchmark32_4096 1420.53 2307.81 1.62x 2273.43 0.99x 2290.92 1.01x
69Benchmark32_8192 1424.79 2312.87 1.62x 2286.07 0.99x 2279.68 1.00x
70Benchmark128_1 8.32 30.15 3.62x 30.84 1.02x 38.33 1.24x
71Benchmark128_2 16.38 59.72 3.65x 59.37 0.99x 69.07 1.16x
72Benchmark128_4 32.26 112.96 3.50x 114.24 1.01x 134.17 1.17x
73Benchmark128_8 62.68 217.88 3.48x 218.18 1.00x 252.86 1.16x
74Benchmark128_16 128.47 451.57 3.51x 474.65 1.05x 603.42 1.27x
75Benchmark128_32 246.18 910.42 3.70x 871.06 0.96x 1117.15 1.28x
76Benchmark128_64 449.05 1477.64 3.29x 1449.24 0.98x 1800.97 1.24x
77Benchmark128_128 762.61 2222.42 2.91x 2217.30 1.00x 2515.50 1.13x
78Benchmark128_256 1179.92 3005.46 2.55x 2931.55 0.98x 3330.11 1.14x
79Benchmark128_512 1616.51 3590.75 2.22x 3592.08 1.00x 3769.09 1.05x
80Benchmark128_1024 1964.36 3979.67 2.03x 4034.01 1.01x 4094.38 1.01x
81Benchmark128_2048 2225.07 4156.93 1.87x 4244.17 1.02x 4290.75 1.01x
82Benchmark128_4096 2360.15 4299.09 1.82x 4392.35 1.02x 4353.29 0.99x
83Benchmark128_8192 2411.50 4356.84 1.81x 4480.68 1.03x 4455.47 0.99x
84
85</pre>
86
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