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Update benchmark results ahead of v0.15.0, ~20% improvement

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Lovell Fuller 2016-05-21 10:21:42 +01:00
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1
CONTRIBUTING.md
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@ -41,7 +41,6 @@ Any change that modifies the existing public API should be added to the relevant
| Release | WIP branch |
| ------: | :--------- |
| v0.15.0 | outfit |
| v0.16.0 | pencil |
| v0.17.0 | quill |

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README.md
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@ -4,7 +4,7 @@ The typical use case for this high speed Node.js module
is to convert large images in common formats to
smaller, web-friendly JPEG, PNG and WebP images of varying dimensions.
Resizing an image is typically 4x faster than using the
Resizing an image is typically 4x-5x faster than using the
quickest ImageMagick and GraphicsMagick settings.
Colour spaces, embedded ICC profiles and alpha transparency channels are all handled correctly.

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docs/index.md
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@ -4,7 +4,7 @@ The typical use case for this high speed Node.js module
is to convert large images in common formats to
smaller, web-friendly JPEG, PNG and WebP images of varying dimensions.
Resizing an image is typically 4x faster than using the
Resizing an image is typically 4x-5x faster than using the
quickest ImageMagick and GraphicsMagick settings.
Colour spaces, embedded ICC profiles and alpha transparency channels are all handled correctly.

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docs/performance.md
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@ -2,42 +2,45 @@
### Test environment
* 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 v5.5.0
* AWS EC2 [c4.xlarge](http://aws.amazon.com/ec2/instance-types/#c4) (4x E5-2666 v3 @ 2.90GHz)
* Amazon Linux AMI 2016.03.1 (HVM), SSD Volume Type
* Node.js v6.2.0
### The contenders
* [jimp](https://www.npmjs.com/package/jimp) v0.2.20 - 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) @47c7329 - Wrapper around libmagick++, supports Buffers only.
* [jimp](https://www.npmjs.com/package/jimp) v0.2.24 - Image processing in pure JavaScript. Bilinear interpolation only.
* [lwip](https://www.npmjs.com/package/lwip) v0.0.9 - Wrapper around CImg, compiles dependencies from source.
* [imagemagick-native](https://www.npmjs.com/package/imagemagick-native) v1.9.2 - 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) v1.21.0 - Fully featured wrapper around GraphicsMagick's `gm` command line utility.
* sharp v0.13.0 / libvips v8.2.2 - Caching within libvips disabled to ensure a fair comparison.
* [gm](https://www.npmjs.com/package/gm) v1.22.0 - Fully featured wrapper around GraphicsMagick's `gm` command line utility.
* sharp v0.15.0 / libvips v8.3.1 - 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.
Decompress a 2725x2225 JPEG image,
resize to 720x480 using Lanczos 3 resampling (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 |
| jimp (bilinear) | file | file | 0.94 | 1.0 |
| jimp (bilinear) | buffer | buffer | 0.98 | 1.0 |
| lwip | file | file | 1.14 | 1.2 |
| lwip | buffer | buffer | 1.14 | 1.2 |
| imagemagick-native | buffer | buffer | 1.66 | 1.8 |
| imagemagick | file | file | 5.08 | 5.4 |
| gm | buffer | buffer | 5.43 | 5.7 |
| gm | file | file | 5.46 | 5.8 |
| sharp | stream | stream | 26.52 | 28.2 |
| sharp | file | file | 28.16 | 30.0 |
| sharp | file | buffer | 28.27 | 30.1 |
| sharp | buffer | file | 28.42 | 30.2 |
| sharp | buffer | buffer | 28.42 | 30.2 |
Greater performance can be expected with caching enabled (default) and using 8+ core machines.
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.

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test/bench/package.json
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@ -14,7 +14,7 @@
"imagemagick": "^0.1.3",
"imagemagick-native": "^1.9.2",
"jimp": "^0.2.24",
"lwip": "^0.0.8",
"lwip": "^0.0.9",
"semver": "^5.1.0"
},
"license": "Apache-2.0",