mirror of
https://github.com/lovell/sharp.git
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2.6 KiB
2.6 KiB
Performance
Test environment
- AWS EC2 c4.xlarge (4x E5-2666 v3 @2.90GHz)
- Amazon Linux 2015.09.1
- Node.js v5.5.0
The contenders
- jimp v0.2.20 - Image processing in pure JavaScript. Bilinear interpolation only.
- lwip v0.0.8 - Wrapper around CImg, compiles dependencies from source.
- imagemagick-native @47c7329 - Wrapper around libmagick++, supports Buffers only.
- imagemagick v0.1.3 - Supports filesystem only and "has been unmaintained for a long time".
- gm v1.21.0 - Fully featured wrapper around GraphicsMagick's
gmcommand line utility. - sharp v0.13.0 / libvips v8.2.2 - Caching within libvips disabled to ensure a fair comparison.
The task
Decompress a 2725x2225 JPEG image, resize to 720x480 using bicubic interpolation (where available), then compress to JPEG.
Results
| Module | Input | Output | Ops/sec | Speed-up |
|---|---|---|---|---|
| jimp (bilinear) | file | file | 1.04 | 1.0 |
| jimp (bilinear) | buffer | buffer | 1.07 | 1.0 |
| lwip | file | file | 1.13 | 1.1 |
| lwip | buffer | buffer | 1.13 | 1.1 |
| imagemagick-native | buffer | buffer | 1.65 | 1.6 |
| imagemagick | file | file | 5.02 | 4.8 |
| gm | buffer | buffer | 5.36 | 5.2 |
| gm | file | file | 5.39 | 5.2 |
| sharp | stream | stream | 22.00 | 21.2 |
| sharp | file | file | 22.87 | 22.0 |
| sharp | file | buffer | 23.03 | 22.1 |
| sharp | buffer | file | 23.10 | 22.2 |
| sharp | buffer | buffer | 23.21 | 22.3 |
Greater performance can be expected with caching enabled (default) and using 8+ core machines.
The I/O limits of the relevant (de)compression library will generally determine maximum throughput.
Benchmark test prerequisites
Requires both ImageMagick and GraphicsMagick:
brew install imagemagick
brew install graphicsmagick
sudo apt-get install imagemagick libmagick++-dev graphicsmagick
sudo yum install ImageMagick-devel ImageMagick-c++-devel GraphicsMagick
Running the benchmark test
git clone https://github.com/lovell/sharp.git
cd sharp
npm install
cd test/bench
npm install
npm test