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| author | 2021-09-11 20:12:47 +0100 | |
|---|---|---|
| committer | 2021-09-11 20:12:47 +0100 | |
| commit | e43a46e9822a05dd0345a7676e03285ddf83205e (patch) | |
| tree | 72db13159e47d7815d001285fadb8225b1f7a571 /vendor/github.com/golang/snappy/README | |
| parent | documentation updates (#211) (diff) | |
| download | gotosocial-e43a46e9822a05dd0345a7676e03285ddf83205e.tar.xz | |
add git.iim.gay/grufwub/go-store for storage backend, replacing blob.Storage
Signed-off-by: kim (grufwub) <grufwub@gmail.com>
Diffstat (limited to 'vendor/github.com/golang/snappy/README')
| -rw-r--r-- | vendor/github.com/golang/snappy/README | 107 | 
1 files changed, 107 insertions, 0 deletions
| diff --git a/vendor/github.com/golang/snappy/README b/vendor/github.com/golang/snappy/README new file mode 100644 index 000000000..cea12879a --- /dev/null +++ b/vendor/github.com/golang/snappy/README @@ -0,0 +1,107 @@ +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. + + + +Benchmarks. + +The golang/snappy benchmarks include compressing (Z) and decompressing (U) ten +or so files, the same set used by the C++ Snappy code (github.com/google/snappy +and note the "google", not "golang"). On an "Intel(R) Core(TM) i7-3770 CPU @ +3.40GHz", Go's GOARCH=amd64 numbers as of 2016-05-29: + +"go test -test.bench=." + +_UFlat0-8         2.19GB/s ± 0%  html +_UFlat1-8         1.41GB/s ± 0%  urls +_UFlat2-8         23.5GB/s ± 2%  jpg +_UFlat3-8         1.91GB/s ± 0%  jpg_200 +_UFlat4-8         14.0GB/s ± 1%  pdf +_UFlat5-8         1.97GB/s ± 0%  html4 +_UFlat6-8          814MB/s ± 0%  txt1 +_UFlat7-8          785MB/s ± 0%  txt2 +_UFlat8-8          857MB/s ± 0%  txt3 +_UFlat9-8          719MB/s ± 1%  txt4 +_UFlat10-8        2.84GB/s ± 0%  pb +_UFlat11-8        1.05GB/s ± 0%  gaviota + +_ZFlat0-8         1.04GB/s ± 0%  html +_ZFlat1-8          534MB/s ± 0%  urls +_ZFlat2-8         15.7GB/s ± 1%  jpg +_ZFlat3-8          740MB/s ± 3%  jpg_200 +_ZFlat4-8         9.20GB/s ± 1%  pdf +_ZFlat5-8          991MB/s ± 0%  html4 +_ZFlat6-8          379MB/s ± 0%  txt1 +_ZFlat7-8          352MB/s ± 0%  txt2 +_ZFlat8-8          396MB/s ± 1%  txt3 +_ZFlat9-8          327MB/s ± 1%  txt4 +_ZFlat10-8        1.33GB/s ± 1%  pb +_ZFlat11-8         605MB/s ± 1%  gaviota + + + +"go test -test.bench=. -tags=noasm" + +_UFlat0-8          621MB/s ± 2%  html +_UFlat1-8          494MB/s ± 1%  urls +_UFlat2-8         23.2GB/s ± 1%  jpg +_UFlat3-8         1.12GB/s ± 1%  jpg_200 +_UFlat4-8         4.35GB/s ± 1%  pdf +_UFlat5-8          609MB/s ± 0%  html4 +_UFlat6-8          296MB/s ± 0%  txt1 +_UFlat7-8          288MB/s ± 0%  txt2 +_UFlat8-8          309MB/s ± 1%  txt3 +_UFlat9-8          280MB/s ± 1%  txt4 +_UFlat10-8         753MB/s ± 0%  pb +_UFlat11-8         400MB/s ± 0%  gaviota + +_ZFlat0-8          409MB/s ± 1%  html +_ZFlat1-8          250MB/s ± 1%  urls +_ZFlat2-8         12.3GB/s ± 1%  jpg +_ZFlat3-8          132MB/s ± 0%  jpg_200 +_ZFlat4-8         2.92GB/s ± 0%  pdf +_ZFlat5-8          405MB/s ± 1%  html4 +_ZFlat6-8          179MB/s ± 1%  txt1 +_ZFlat7-8          170MB/s ± 1%  txt2 +_ZFlat8-8          189MB/s ± 1%  txt3 +_ZFlat9-8          164MB/s ± 1%  txt4 +_ZFlat10-8         479MB/s ± 1%  pb +_ZFlat11-8         270MB/s ± 1%  gaviota + + + +For comparison (Go's encoded output is byte-for-byte identical to C++'s), here +are the numbers from C++ Snappy's + +make CXXFLAGS="-O2 -DNDEBUG -g" clean snappy_unittest.log && cat snappy_unittest.log + +BM_UFlat/0     2.4GB/s  html +BM_UFlat/1     1.4GB/s  urls +BM_UFlat/2    21.8GB/s  jpg +BM_UFlat/3     1.5GB/s  jpg_200 +BM_UFlat/4    13.3GB/s  pdf +BM_UFlat/5     2.1GB/s  html4 +BM_UFlat/6     1.0GB/s  txt1 +BM_UFlat/7   959.4MB/s  txt2 +BM_UFlat/8     1.0GB/s  txt3 +BM_UFlat/9   864.5MB/s  txt4 +BM_UFlat/10    2.9GB/s  pb +BM_UFlat/11    1.2GB/s  gaviota + +BM_ZFlat/0   944.3MB/s  html (22.31 %) +BM_ZFlat/1   501.6MB/s  urls (47.78 %) +BM_ZFlat/2    14.3GB/s  jpg (99.95 %) +BM_ZFlat/3   538.3MB/s  jpg_200 (73.00 %) +BM_ZFlat/4     8.3GB/s  pdf (83.30 %) +BM_ZFlat/5   903.5MB/s  html4 (22.52 %) +BM_ZFlat/6   336.0MB/s  txt1 (57.88 %) +BM_ZFlat/7   312.3MB/s  txt2 (61.91 %) +BM_ZFlat/8   353.1MB/s  txt3 (54.99 %) +BM_ZFlat/9   289.9MB/s  txt4 (66.26 %) +BM_ZFlat/10    1.2GB/s  pb (19.68 %) +BM_ZFlat/11  527.4MB/s  gaviota (37.72 %) | 
