Codebase list golang-github-klauspost-pgzip / b9c60e2
Import upstream version 1.2.5+git20220215.1.f5d9792 Debian Janitor 2 years ago
3 changed file(s) with 12 addition(s) and 8 deletion(s). Raw diff Collapse all Expand all
+4
-0
.travis.yml less more
0
1 arch:
2 - amd64
3 - ppc64le
04 language: go
15
26 os:
+2
-1
LICENSE less more
0 MIT License
0 The MIT License (MIT)
11
22 Copyright (c) 2014 Klaus Post
33
1818 LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
1919 OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
2020 SOFTWARE.
21
+6
-7
README.md less more
103103
104104 Compressor | MB/sec | speedup | size | size overhead (lower=better)
105105 ------------|----------|---------|------|---------
106 [gzip](http://golang.org/pkg/compress/gzip) (golang) | 15.44MB/s (1 thread) | 1.0x | 4781329307 | 0%
107 [gzip](http://github.com/klauspost/compress/gzip) (klauspost) | 135.04MB/s (1 thread) | 8.74x | 4894858258 | +2.37%
108 [pgzip](https://github.com/klauspost/pgzip) (klauspost) | 1573.23MB/s| 101.9x | 4902285651 | +2.53%
109 [bgzf](https://godoc.org/github.com/biogo/hts/bgzf) (biogo) | 361.40MB/s | 23.4x | 4869686090 | +1.85%
110 [pargzip](https://godoc.org/github.com/golang/build/pargzip) (builder) | 306.01MB/s | 19.8x | 4786890417 | +0.12%
106 [gzip](http://golang.org/pkg/compress/gzip) (golang) | 16.91MB/s (1 thread) | 1.0x | 4781329307 | 0%
107 [gzip](http://github.com/klauspost/compress/gzip) (klauspost) | 127.10MB/s (1 thread) | 7.52x | 4885366806 | +2.17%
108 [pgzip](https://github.com/klauspost/pgzip) (klauspost) | 2085.35MB/s| 123.34x | 4886132566 | +2.19%
109 [pargzip](https://godoc.org/github.com/golang/build/pargzip) (builder) | 334.04MB/s | 19.76x | 4786890417 | +0.12%
111110
112 pgzip also contains a [linear time compression](https://github.com/klauspost/compress#linear-time-compression-huffman-only) mode, that will allow compression at ~250MB per core per second, independent of the content.
111 pgzip also contains a [huffman only compression](https://github.com/klauspost/compress#linear-time-compression-huffman-only) mode, that will allow compression at ~450MB per core per second, largely independent of the content.
113112
114113 See the [complete sheet](https://docs.google.com/spreadsheets/d/1nuNE2nPfuINCZJRMt6wFWhKpToF95I47XjSsc-1rbPQ/edit?usp=sharing) for different content types and compression settings.
115114
122121 Decompressor | Time | Speedup
123122 -------------|------|--------
124123 [gzip](http://golang.org/pkg/compress/gzip) (golang) | 1m28.85s | 0%
125 [pgzip](https://github.com/klauspost/pgzip) (golang) | 43.48s | 104%
124 [pgzip](https://github.com/klauspost/pgzip) (klauspost) | 43.48s | 104%
126125
127126 But wait, since gzip decompression is inherently singlethreaded (aside from CRC calculation) how can it be more than 100% faster? Because pgzip due to its design also acts as a buffer. When using unbuffered gzip, you are also waiting for io when you are decompressing. If the gzip decoder can keep up, it will always have data ready for your reader, and you will not be waiting for input to the gzip decompressor to complete.
128127