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Update perf test results ahead of v0.12.0

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Lovell Fuller 2015-11-23 13:09:06 +00:00
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docs/performance.md
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@ -2,39 +2,40 @@
### Test environment
* AWS EC2 [c4.xlarge](http://aws.amazon.com/ec2/instance-types/#c4)
* Amazon Linux AMI 2015.09
* Node.js v4.1.2
* AWS EC2 [c4.xlarge](http://aws.amazon.com/ec2/instance-types/#c4) (4x E5-2666 v3 @2.90GHz)
* Amazon Linux 2015.09.1
* Node.js v5.1.0
### The contenders
* [jimp](https://www.npmjs.com/package/jimp) v0.2.8 - Image processing in pure JavaScript.
* [jimp](https://www.npmjs.com/package/jimp) v0.2.19 - Image processing in pure JavaScript. Bilinear interpolation only.
* [lwip](https://www.npmjs.com/package/lwip) v0.0.8 - Wrapper around CImg, compiles dependencies from source.
* ~~[imagemagick-native](https://www.npmjs.com/package/imagemagick-native)~~ - Wrapper around libmagick++, supports Buffers only. Does not currently work with Node.js v4.
* [imagemagick-native](https://www.npmjs.com/package/imagemagick-native) @5ab570e - Wrapper around libmagick++, supports Buffers only.
* [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) v1.20.0 - Fully featured wrapper around GraphicsMagick's `convert` command line utility.
* sharp v0.11.3 / libvips v8.1.0 - Caching within libvips disabled to ensure a fair comparison.
* [gm](https://www.npmjs.com/package/gm) v1.21.0 - Fully featured wrapper around GraphicsMagick's `gm` command line utility.
* sharp v0.12.0 / libvips v8.1.1 - Caching within libvips disabled to ensure a fair comparison.
### The task
Decompress a 2725x2225 JPEG image, resize to 720x480 using bilinear interpolation, then compress to JPEG.
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 | file | file | 0.94 | 1.0 |
| jimp | buffer | buffer | 1.12 | 1.2 |
| lwip | file | file | 1.12 | 1.2 |
| lwip | buffer | buffer | 1.13 | 1.2 |
| gm | buffer | buffer | 5.50 | 5.9 |
| gm | file | file | 5.55 | 5.9 |
| imagemagick | file | file | 8.66 | 9.2 |
| sharp | stream | stream | 16.33 | 17.4 |
| sharp | file | file | 16.88 | 18.0 |
| sharp | file | buffer | 16.90 | 18.1 |
| sharp | buffer | file | 16.99 | 18.1 |
| sharp | buffer | buffer | 17.06 | 18.1 |
| Module | Input | Output | Ops/sec | Speed-up |
| :----------------- | :----- | :----- | ------: | -------: |
| jimp | file | file | 0.99 | 1.0 |
| jimp | buffer | buffer | 1.05 | 1.1 |
| lwip | file | file | 1.13 | 1.1 |
| lwip | buffer | buffer | 1.13 | 1.1 |
| imagemagick-native | buffer | buffer | 1.67 | 1.7 |
| imagemagick | file | file | 5.19 | 5.2 |
| gm | buffer | buffer | 5.56 | 5.6 |
| gm | file | file | 5.59 | 5.6 |
| sharp | stream | stream | 21.91 | 22.1 |
| sharp | file | file | 22.79 | 23.0 |
| sharp | file | buffer | 22.91 | 23.1 |
| sharp | buffer | file | 23.03 | 23.3 |
| sharp | buffer | buffer | 23.15 | 23.4 |
Greater performance can be expected with caching enabled (default) and using 8+ core machines.
@ -50,7 +51,11 @@ brew install graphicsmagick
```
```sh
sudo apt-get install imagemagick graphicsmagick libmagick++-dev
sudo apt-get install imagemagick libmagick++-dev graphicsmagick
```
```sh
sudo yum install ImageMagick-devel ImageMagick-c++-devel GraphicsMagick
```
### Running the benchmark test