mirror of
https://github.com/lovell/sharp.git
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3.0 KiB
3.0 KiB
Performance
Test environment
- AWS EC2 eu-west-1 c5.large (2x Xeon Platinum 8124M CPU @ 3.00GHz)
- Ubuntu 17.10 (hvm:ebs-ssd, 20180102, ami-0741d47e)
- Node.js v8.9.4
The contenders
- jimp v0.2.28 - Image processing in pure JavaScript. Bilinear interpolation only.
- pajk-lwip v0.2.0 (fork) - Wrapper around CImg that compiles dependencies from source.
- mapnik v3.6.2 - Whilst primarily a map renderer, Mapnik contains bitmap image utilities.
- imagemagick-native v1.9.3 - Wrapper around libmagick++, supports Buffers only.
- imagemagick v0.1.3 - Supports filesystem only and "has been unmaintained for a long time".
- gm v1.23.1 - Fully featured wrapper around GraphicsMagick's
gmcommand line utility. - images v3.0.1 - Compiles dependencies from source. Provides bicubic interpolation.
- sharp v0.19.0 / libvips v8.6.1 - Caching within libvips disabled to ensure a fair comparison.
The task
Decompress a 2725x2225 JPEG image, resize to 720x588 using Lanczos 3 resampling (where available), then compress to JPEG at a "quality" setting of 80.
Results
| Module | Input | Output | Ops/sec | Speed-up |
|---|---|---|---|---|
| jimp (bilinear) | buffer | buffer | 1.14 | 1.0 |
| lwip | buffer | buffer | 1.86 | 1.6 |
| mapnik | buffer | buffer | 3.34 | 2.9 |
| imagemagick-native | buffer | buffer | 4.13 | 3.6 |
| gm | buffer | buffer | 4.21 | 3.7 |
| gm | file | file | 4.27 | 3.7 |
| imagemagick | file | file | 4.67 | 4.1 |
| images (bicubic) | file | file | 6.22 | 5.5 |
| sharp | stream | stream | 24.43 | 21.4 |
| sharp | file | file | 25.97 | 22.7 |
| sharp | file | buffer | 26.00 | 22.8 |
| sharp | buffer | file | 26.33 | 23.0 |
| sharp | buffer | buffer | 26.43 | 23.1 |
Greater libvips performance can be expected with caching enabled (default) and using 8+ core machines, especially those with larger L1/L2 CPU caches.
The I/O limits of the relevant (de)compression library will generally determine maximum throughput.
Benchmark test prerequisites
Requires ImageMagick, GraphicsMagick and Mapnik:
brew install imagemagick
brew install graphicsmagick
brew install mapnik
sudo apt-get install imagemagick libmagick++-dev graphicsmagick mapnik-dev
sudo yum install ImageMagick-devel ImageMagick-c++-devel GraphicsMagick mapnik-devel
Running the benchmark test
git clone https://github.com/lovell/sharp.git
cd sharp
npm install
cd test/bench
npm install
npm test