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s2: Slightly faster non-assembly decompression #646

Merged
merged 2 commits into from
Jul 25, 2022
Merged

s2: Slightly faster non-assembly decompression #646

merged 2 commits into from
Jul 25, 2022

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klauspost
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Only seems to help very small encodes really:

benchmark                                                                 old ns/op     new ns/op     delta
BenchmarkTwainDecode1e1/default-32                                        24.5          12.6          -48.61%
BenchmarkTwainDecode1e1/better-32                                         25.2          12.6          -49.90%
BenchmarkTwainDecode1e1/best-32                                           25.8          12.6          -51.14%
BenchmarkTwainDecode1e1/snappy-input-32                                   25.1          12.6          -49.66%
BenchmarkTwainDecode1e2/default-32                                        51.9          42.3          -18.41%
BenchmarkTwainDecode1e2/better-32                                         75.1          59.2          -21.17%
BenchmarkTwainDecode1e2/best-32                                           74.3          55.9          -24.67%
BenchmarkTwainDecode1e2/snappy-input-32                                   74.1          57.4          -22.58%
BenchmarkTwainDecode1e3/default-32                                        189           163           -13.62%
BenchmarkTwainDecode1e3/better-32                                         607           577           -4.96%
BenchmarkTwainDecode1e3/best-32                                           634           616           -2.79%
BenchmarkTwainDecode1e3/snappy-input-32                                   519           480           -7.48%
BenchmarkTwainDecode1e4/default-32                                        4646          4690          +0.95%
BenchmarkTwainDecode1e4/better-32                                         11077         11151         +0.67%
BenchmarkTwainDecode1e4/best-32                                           11000         11364         +3.31%
BenchmarkTwainDecode1e4/snappy-input-32                                   11354         11460         +0.93%
BenchmarkTwainDecode1e5/default-32                                        139163        140259        +0.79%
BenchmarkTwainDecode1e5/better-32                                         236537        240051        +1.49%
BenchmarkTwainDecode1e5/best-32                                           233781        235656        +0.80%
BenchmarkTwainDecode1e5/snappy-input-32                                   268110        270810        +1.01%
BenchmarkTwainDecode1e6/default-32                                        1582443       1584509       +0.13%
BenchmarkTwainDecode1e6/better-32                                         2273135       2308712       +1.57%
BenchmarkTwainDecode1e6/best-32                                           2092574       2108555       +0.76%
BenchmarkTwainDecode1e6/snappy-input-32                                   2711775       2727778       +0.59%
BenchmarkTwainDecode1e7/default-32                                        15834966      15962745      +0.81%
BenchmarkTwainDecode1e7/better-32                                         22696148      22958016      +1.15%
BenchmarkTwainDecode1e7/best-32                                           20738425      20910498      +0.83%
BenchmarkTwainDecode1e7/snappy-input-32                                   27306220      27518433      +0.78%

@klauspost
s2: Improve Go speed
97dc13d 
Remove bounds checks and load faster.
@klauspost
Reorder+tweaks
a1ffef9
@klauspost klauspost changed the title S2 go decoder bounds s2: Slightly faster non-assembly decompression Jul 22, 2022
@klauspost klauspost merged commit 6234e33 into master Jul 25, 2022
@klauspost klauspost deleted the s2-go-decoder-bounds branch July 25, 2022 14:07
@jzelinskie jzelinskie mentioned this pull request Sep 16, 2022
Merged
jzelinskie added a commit to jzelinskie/spicedb that referenced this pull request Sep 16, 2022
@jzelinskie
gomod: bump compress to v1.15.10
ac40eb6 
This change includes up to 48% performance improvements for small S2
decompression:

klauspost/compress#646
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@klauspost