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snappy
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The Snappy compression format in the Go programming language.
78 коммитов 2 Ветки 4 Теги 2,4 MiB
Go 67.1%
Assembly 31.8%
C++ 1.1%
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Nigel Tao d1f56d2222 Encode copies of length 65, 66 or 67 as 5 bytes, not 6. 
The benchmarks don't show a big change either way, but the output is
shorter, and it matches what the C++ snappy code does.

benchmark                     old MB/s     new MB/s     speedup
BenchmarkWordsEncode1e1-8     5.77         5.77         1.00x
BenchmarkWordsEncode1e2-8     47.15        47.26        1.00x
BenchmarkWordsEncode1e3-8     180.77       183.25       1.01x
BenchmarkWordsEncode1e4-8     202.01       198.96       0.98x
BenchmarkWordsEncode1e5-8     145.66       144.68       0.99x
BenchmarkWordsEncode1e6-8     174.12       172.31       0.99x
BenchmarkRandomEncode-8       4522.91      4495.78      0.99x
Benchmark_ZFlat0-8            359.70       359.79       1.00x
Benchmark_ZFlat1-8            181.18       181.82       1.00x
Benchmark_ZFlat2-8            4612.52      4557.46      0.99x
Benchmark_ZFlat3-8            85.65        84.82        0.99x
Benchmark_ZFlat4-8            559.51       558.52       1.00x
Benchmark_ZFlat5-8            354.88       352.91       0.99x
Benchmark_ZFlat6-8            156.14       156.26       1.00x
Benchmark_ZFlat7-8            148.18       148.12       1.00x
Benchmark_ZFlat8-8            162.68       162.21       1.00x
Benchmark_ZFlat9-8            141.81       142.32       1.00x
Benchmark_ZFlat10-8           399.79       401.94       1.01x
Benchmark_ZFlat11-8           237.43       235.91       0.99x
 		2016-04-02 16:22:40 +11:00
cmd/snappytool Add a snappytool command that uses the C++ library. 2016-02-25 13:31:42 +11:00
testdata Add a snappytool command that uses the C++ library. 2016-02-25 13:31:42 +11:00
.gitignore Add a snappytool command that uses the C++ library. 2016-02-25 13:31:42 +11:00
AUTHORS A+C: remove Klaus Post <klauspost@gmail.com>. 2016-02-10 11:09:04 +11:00
CONTRIBUTORS A+C: remove Klaus Post <klauspost@gmail.com>. 2016-02-10 11:09:04 +11:00
LICENSE Initial check-in. 2011-08-23 21:42:19 +10:00
README all: simpler import path 2015-06-11 10:18:30 +02:00
decode.go Rewrite the core of the decoder in asm. 2016-02-26 17:03:02 +11:00
decode_amd64.go Rewrite the core of the decoder in asm. 2016-02-26 17:03:02 +11:00
decode_amd64.s Optimize a 16-byte load and store. 2016-03-04 16:48:22 +11:00
decode_other.go Rewrite the core of the decoder in asm. 2016-02-26 17:03:02 +11:00
encode.go Encode copies of length 65, 66 or 67 as 5 bytes, not 6. 2016-04-02 16:22:40 +11:00
snappy.go Use 64K blocks when encoding long inputs. 2016-02-22 12:44:36 +11:00
snappy_test.go Encode copies of length 65, 66 or 67 as 5 bytes, not 6. 2016-04-02 16:22:40 +11:00

README 

The Snappy compression format in the Go programming language.

To download and install from source:
$ go get github.com/golang/snappy

Unless otherwise noted, the Snappy-Go source files are distributed
under the BSD-style license found in the LICENSE file.