mirror of
https://github.com/lovell/sharp.git
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112 lines
4.9 KiB
Markdown
112 lines
4.9 KiB
Markdown
# Performance
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A test to benchmark the performance of this module relative to alternatives.
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Greater libvips performance can be expected with caching enabled (default)
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and using 8+ core machines, especially those with larger L1/L2 CPU caches.
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The I/O limits of the relevant (de)compression library will generally determine maximum throughput.
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## Contenders
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* [jimp](https://www.npmjs.com/package/jimp) v0.22.10 - Image processing in pure JavaScript.
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* [imagemagick](https://www.npmjs.com/package/imagemagick) v0.1.3 - Supports filesystem only and "*has been unmaintained for a long time*".
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* [gm](https://www.npmjs.com/package/gm) v1.25.0 - Fully featured wrapper around GraphicsMagick's `gm` command line utility.
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* [@squoosh/lib](https://www.npmjs.com/package/@squoosh/lib) v0.5.3 - Image libraries transpiled to WebAssembly, includes GPLv3 code, but "*Project no longer maintained*".
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* [@squoosh/cli](https://www.npmjs.com/package/@squoosh/cli) v0.7.3 - Command line wrapper around `@squoosh/lib`, avoids GPLv3 by spawning process, but "*Project no longer maintained*".
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* sharp v0.33.0 / libvips v8.15.0 - Caching within libvips disabled to ensure a fair comparison.
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## Environment
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### AMD64
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* AWS EC2 us-east-2 [c7a.xlarge](https://aws.amazon.com/ec2/instance-types/c7a/) (4x AMD EPYC 9R14)
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* Ubuntu 23.10 [13f233a16be2](https://hub.docker.com/layers/library/ubuntu/23.10/images/sha256-13f233a16be210b57907b98b0d927ceff7571df390701e14fe1f3901b2c4a4d7)
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* Node.js 20.10.0
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### ARM64
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* AWS EC2 us-east-2 [c7g.xlarge](https://aws.amazon.com/ec2/instance-types/c7g/) (4x ARM Graviton3)
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* Ubuntu 23.10 [7708743264cb](https://hub.docker.com/layers/library/ubuntu/23.10/images/sha256-7708743264cbb7f6cf7fc13e915faece45a6cdda455748bc55e58e8de3d27b63)
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* Node.js 20.10.0
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## Task: JPEG
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Decompress a 2725x2225 JPEG image,
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resize to 720x588 using Lanczos 3 resampling (where available),
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then compress to JPEG at a "quality" setting of 80.
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Note: jimp does not support Lanczos 3, bicubic resampling used instead.
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#### Results: JPEG (AMD64)
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| Module | Input | Output | Ops/sec | Speed-up |
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| :----------------- | :----- | :----- | ------: | -------: |
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| jimp | buffer | buffer | 0.84 | 1.0 |
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| squoosh-cli | file | file | 1.54 | 1.8 |
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| squoosh-lib | buffer | buffer | 2.24 | 2.7 |
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| imagemagick | file | file | 11.75 | 14.0 |
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| gm | buffer | buffer | 12.66 | 15.1 |
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| gm | file | file | 12.72 | 15.1 |
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| sharp | stream | stream | 48.31 | 57.5 |
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| sharp | file | file | 51.42 | 61.2 |
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| sharp | buffer | buffer | 52.41 | 62.4 |
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#### Results: JPEG (ARM64)
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| Module | Input | Output | Ops/sec | Speed-up |
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| :----------------- | :----- | :----- | ------: | -------: |
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| jimp | buffer | buffer | 0.88 | 1.0 |
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| squoosh-cli | file | file | 1.18 | 1.3 |
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| squoosh-lib | buffer | buffer | 1.99 | 2.3 |
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| gm | buffer | buffer | 6.06 | 6.9 |
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| gm | file | file | 10.81 | 12.3 |
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| imagemagick | file | file | 10.95 | 12.4 |
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| sharp | stream | stream | 33.15 | 37.7 |
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| sharp | file | file | 34.99 | 39.8 |
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| sharp | buffer | buffer | 36.05 | 41.0 |
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## Task: PNG
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Decompress a 2048x1536 RGBA PNG image,
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premultiply the alpha channel,
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resize to 720x540 using Lanczos 3 resampling (where available),
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unpremultiply then compress as PNG with a "default" zlib compression level of 6
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and without adaptive filtering.
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Note: jimp does not support premultiply/unpremultiply.
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### Results: PNG (AMD64)
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| Module | Input | Output | Ops/sec | Speed-up |
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| :----------------- | :----- | :----- | ------: | -------: |
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| squoosh-cli | file | file | 0.34 | 1.0 |
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| squoosh-lib | buffer | buffer | 0.51 | 1.5 |
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| jimp | buffer | buffer | 3.59 | 10.6 |
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| gm | file | file | 8.54 | 25.1 |
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| imagemagick | file | file | 9.23 | 27.1 |
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| sharp | file | file | 25.43 | 74.8 |
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| sharp | buffer | buffer | 25.70 | 75.6 |
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### Results: PNG (ARM64)
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| Module | Input | Output | Ops/sec | Speed-up |
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| :----------------- | :----- | :----- | ------: | -------: |
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| squoosh-cli | file | file | 0.33 | 1.0 |
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| squoosh-lib | buffer | buffer | 0.46 | 1.4 |
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| jimp | buffer | buffer | 3.51 | 10.6 |
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| gm | file | file | 7.47 | 22.6 |
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| imagemagick | file | file | 8.06 | 24.4 |
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| sharp | file | file | 17.31 | 52.5 |
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| sharp | buffer | buffer | 17.66 | 53.5 |
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## Running the benchmark test
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Requires Docker.
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```sh
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git clone https://github.com/lovell/sharp.git
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cd sharp/test/bench
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./run-with-docker.sh
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```
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