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Remove old benchmarks

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Andrew 2026-01-06 07:00:05 +13:00
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README.md
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@ -161,39 +161,3 @@ Other contributions (such as improving documentation or translations) are also w
## License ## License
Oxipng is open-source software, distributed under the MIT license. Oxipng is open-source software, distributed under the MIT license.
## Benchmarks
Tested Oxipng 9.0.0 (commit `c16519b38b0519988db625913be919d4f0e42f5d`, compiled
on `rustc 1.74.0-nightly (7b4d9e155 2023-09-28)`) against OptiPNG version 0.7.7,
as packaged by Debian unstable, on a Linux 6.5.0-2-amd64 kernel, Intel Core
i7-12700 CPU (8 performance cores, 4 efficiency cores, 20 threads), DDR5-5200
RAM in dual channel configuration.
```
Benchmark 1: ./target/release/oxipng -P ./tests/files/rgb_16_should_be_grayscale_8.png
Time (mean ± σ): 59.6 ms ± 7.7 ms [User: 77.4 ms, System: 3.6 ms]
Range (min … max): 53.3 ms … 89.9 ms 32 runs
Benchmark 2: optipng -simulate ./tests/files/rgb_16_should_be_grayscale_8.png
Time (mean ± σ): 132.4 ms ± 0.8 ms [User: 132.5 ms, System: 0.6 ms]
Range (min … max): 131.8 ms … 134.4 ms 22 runs
Summary
./target/release/oxipng -P ./tests/files/rgb_16_should_be_grayscale_8.png ran
2.22 ± 0.29 times faster than optipng -simulate ./tests/files/rgb_16_should_be_grayscale_8.png
Benchmark 1: ./target/release/oxipng -o4 -P ./tests/files/rgb_16_should_be_grayscale_8.png
Time (mean ± σ): 88.7 ms ± 4.3 ms [User: 270.3 ms, System: 11.0 ms]
Range (min … max): 86.8 ms … 109.4 ms 26 runs
Benchmark 2: optipng -o 4 -simulate ./tests/files/rgb_16_should_be_grayscale_8.png
Time (mean ± σ): 444.9 ms ± 0.3 ms [User: 444.8 ms, System: 0.7 ms]
Range (min … max): 444.4 ms … 445.6 ms 10 runs
Summary
./target/release/oxipng -o4 -P ./tests/files/rgb_16_should_be_grayscale_8.png ran
5.01 ± 0.25 times faster than optipng -o 4 -simulate ./tests/files/rgb_16_should_be_grayscale_8.png
```