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Update performance test results

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Lovell Fuller 2021-08-17 10:23:45 +01:00
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@ -5,9 +5,11 @@ A test to benchmark the performance of this module relative to alternatives.
## The contenders ## The contenders
* [jimp](https://www.npmjs.com/package/jimp) v0.16.1 - Image processing in pure JavaScript. Provides bicubic interpolation. * [jimp](https://www.npmjs.com/package/jimp) v0.16.1 - Image processing in pure JavaScript. Provides bicubic interpolation.
* [mapnik](https://www.npmjs.org/package/mapnik) v4.5.6 - Whilst primarily a map renderer, Mapnik contains bitmap image utilities. * [mapnik](https://www.npmjs.org/package/mapnik) v4.5.8 - Whilst primarily a map renderer, Mapnik contains bitmap image utilities.
* [imagemagick](https://www.npmjs.com/package/imagemagick) v0.1.3 - Supports filesystem only and "*has been unmaintained for a long time*". * [imagemagick](https://www.npmjs.com/package/imagemagick) v0.1.3 - Supports filesystem only and "*has been unmaintained for a long time*".
* [gm](https://www.npmjs.com/package/gm) v1.23.1 - Fully featured wrapper around GraphicsMagick's `gm` command line utility. * [gm](https://www.npmjs.com/package/gm) v1.23.1 - Fully featured wrapper around GraphicsMagick's `gm` command line utility.
* [@squoosh/lib](https://www.npmjs.com/package/@squoosh/lib) v0.4.0 - Image libraries transpiled to WebAssembly, includes GPLv3 code.
* [@squoosh/cli](https://www.npmjs.com/package/@squoosh/cli) v0.7.2 - Command line wrapper around `@squoosh/lib`, avoids GPLv3 by spawning process.
* sharp v0.28.0 / libvips v8.10.6 - Caching within libvips disabled to ensure a fair comparison. * sharp v0.28.0 / libvips v8.10.6 - Caching within libvips disabled to ensure a fair comparison.
## The task ## The task
@ -19,21 +21,23 @@ then compress to JPEG at a "quality" setting of 80.
## Test environment ## Test environment
* AWS EC2 eu-west-1 [c5ad.xlarge](https://aws.amazon.com/ec2/instance-types/c5/) (4x AMD EPYC 7R32) * AWS EC2 eu-west-1 [c5ad.xlarge](https://aws.amazon.com/ec2/instance-types/c5/) (4x AMD EPYC 7R32)
* Ubuntu 20.10 (ami-03f10415e8b0bfb86) * Ubuntu 21.04 (ami-0d7626a9c2ceab1ac)
* Node.js v14.16.0 * Node.js 16.6.2
## Results ## Results
| Module | Input | Output | Ops/sec | Speed-up | | Module | Input | Output | Ops/sec | Speed-up |
| :----------------- | :----- | :----- | ------: | -------: | | :----------------- | :----- | :----- | ------: | -------: |
| jimp | buffer | buffer | 0.78 | 1.0 | | jimp | buffer | buffer | 0.83 | 1.0 |
| mapnik | buffer | buffer | 3.39 | 4.3 | | squoosh-cli | file | file | 1.09 | 1.3 |
| gm | buffer | buffer | 7.84 | 10.1 | | squoosh-lib | buffer | buffer | 1.83 | 2.2 |
| gm | file | file | 9.24 | 11.8 | | mapnik | buffer | buffer | 3.41 | 4.1 |
| imagemagick | file | file | 9.37 | 12.0 | | gm | buffer | buffer | 8.34 | 10.0 |
| sharp | stream | stream | 26.84 | 34.4 | | imagemagick | file | file | 8.67 | 10.4 |
| sharp | file | file | 29.76 | 38.2 | | gm | file | file | 8.82 | 10.6 |
| sharp | buffer | buffer | 31.60 | 40.5 | | sharp | stream | stream | 29.44 | 35.5 |
| sharp | file | file | 29.64 | 35.7 |
| sharp | buffer | buffer | 31.09 | 37.5 |
Greater libvips performance can be expected with caching enabled (default) Greater libvips performance can be expected with caching enabled (default)
and using 8+ core machines, especially those with larger L1/L2 CPU caches. and using 8+ core machines, especially those with larger L1/L2 CPU caches.