Update benchmark results ahead of v0.21.0

Remove lwip and images as they lack Node 10 support

docs/performance.md

@@ -3,19 +3,17 @@
 ### Test environment
 
 * AWS EC2 eu-west-1 [c5.large](https://aws.amazon.com/ec2/instance-types/c5/) (2x Xeon Platinum 8124M CPU @ 3.00GHz)
-* Ubuntu 17.10 (hvm:ebs-ssd, 20180102, ami-0741d47e)
+* Ubuntu 18.04 (hvm-ssd/ubuntu-bionic-18.04-amd64-server-20180912 ami-00035f41c82244dab)
-* Node.js v8.9.4
+* Node.js v10.11.0
 
 ### The contenders
 
-* [jimp](https://www.npmjs.com/package/jimp) v0.2.28 - Image processing in pure JavaScript. Bilinear interpolation only.
+* [jimp](https://www.npmjs.com/package/jimp) v0.5.3 - Image processing in pure JavaScript. Provides bicubic interpolation.
-* [pajk-lwip](https://www.npmjs.com/package/pajk-lwip) v0.2.0 (fork) - Wrapper around CImg that compiles dependencies from source.
+* [mapnik](https://www.npmjs.org/package/mapnik) v4.0.1 - Whilst primarily a map renderer, Mapnik contains bitmap image utilities.
-* [mapnik](https://www.npmjs.org/package/mapnik) v3.6.2 - Whilst primarily a map renderer, Mapnik contains bitmap image utilities.
 * [imagemagick-native](https://www.npmjs.com/package/imagemagick-native) v1.9.3 - 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) v1.23.1 - Fully featured wrapper around GraphicsMagick's `gm` command line utility.
-* [images](https://www.npmjs.com/package/images) v3.0.1 - Compiles dependencies from source. Provides bicubic interpolation.
+* sharp v0.21.0 / libvips v8.7.0 - Caching within libvips disabled to ensure a fair comparison.
-* sharp v0.19.0 / libvips v8.6.1 - Caching within libvips disabled to ensure a fair comparison.
 
 ### The task
 
@@ -27,19 +25,14 @@ then compress to JPEG at a "quality" setting of 80.
 
 | Module             | Input  | Output | Ops/sec | Speed-up |
 | :----------------- | :----- | :----- | ------: | -------: |
-| jimp (bilinear)    | buffer | buffer |    1.14 |      1.0 |
+| jimp               | buffer | buffer |    0.71 |      1.0 |
-| lwip               | buffer | buffer |    1.86 |      1.6 |
+| mapnik             | buffer | buffer |    3.32 |      4.7 |
-| mapnik             | buffer | buffer |    3.34 |      2.9 |
+| gm                 | buffer | buffer |    3.97 |      5.6 |
-| imagemagick-native | buffer | buffer |    4.13 |      3.6 |
+| imagemagick-native | buffer | buffer |    4.06 |      5.7 |
-| gm                 | buffer | buffer |    4.21 |      3.7 |
+| imagemagick        | file   | file   |    4.24 |      6.0 |
-| gm                 | file   | file   |    4.27 |      3.7 |
+| sharp              | stream | stream |   25.30 |     35.6 |
-| imagemagick        | file   | file   |    4.67 |      4.1 |
+| sharp              | file   | file   |   26.17 |     36.9 |
-| images (bicubic)   | file   | file   |    6.22 |      5.5 |
+| sharp              | buffer | buffer |   26.45 |     37.3 |
-| 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.
@@ -57,7 +50,7 @@ brew install mapnik
 ```
 
 ```sh
-sudo apt-get install imagemagick libmagick++-dev graphicsmagick mapnik-dev
+sudo apt-get install imagemagick libmagick++-dev graphicsmagick libmapnik-dev
 ```
 
 ```sh

test/bench/package.json

@@ -13,10 +13,8 @@
     "gm": "^1.23.1",
     "imagemagick": "^0.1.3",
     "imagemagick-native": "^1.9.3",
-    "images": "^3.0.1",
     "jimp": "^0.5.3",
     "mapnik": "^4.0.1",
-    "pajk-lwip": "^0.2.0",
     "semver": "^5.5.1"
   },
   "license": "Apache-2.0",

test/bench/perf.js

@@ -12,24 +12,12 @@ const gm = require('gm');
 const imagemagick = require('imagemagick');
 const mapnik = require('mapnik');
 const jimp = require('jimp');
-let images;
-try {
-  images = require('images');
-} catch (err) {
-  console.log('Excluding node-images');
-}
 let imagemagickNative;
 try {
   imagemagickNative = require('imagemagick-native');
 } catch (err) {
   console.log('Excluding imagemagick-native');
 }
-let lwip;
-try {
-  lwip = require('pajk-lwip');
-} catch (err) {
-  console.log('Excluding lwip');
-}
 
 const fixtures = require('../fixtures');
 
@@ -38,8 +26,6 @@ const height = 588;
 
 // Disable libvips cache to ensure tests are as fair as they can be
 sharp.cache(false);
-// Enable use of SIMD
-sharp.simd(true);
 
 async.series({
   'jpeg': function (callback) {
@@ -87,51 +73,6 @@ async.series({
         });
       }
     });
-    // lwip
-    if (typeof lwip !== 'undefined') {
-      jpegSuite.add('lwip-file-file', {
-        defer: true,
-        fn: function (deferred) {
-          lwip.open(fixtures.inputJpg, function (err, image) {
-            if (err) {
-              throw err;
-            }
-            image.resize(width, height, 'lanczos', function (err, image) {
-              if (err) {
-                throw err;
-              }
-              image.writeFile(fixtures.outputJpg, {quality: 80}, function (err) {
-                if (err) {
-                  throw err;
-                }
-                deferred.resolve();
-              });
-            });
-          });
-        }
-      }).add('lwip-buffer-buffer', {
-        defer: true,
-        fn: function (deferred) {
-          lwip.open(inputJpgBuffer, 'jpg', function (err, image) {
-            if (err) {
-              throw err;
-            }
-            image.resize(width, height, 'lanczos', function (err, image) {
-              if (err) {
-                throw err;
-              }
-              image.toBuffer('jpg', {quality: 80}, function (err, buffer) {
-                if (err) {
-                  throw err;
-                }
-                assert.notStrictEqual(null, buffer);
-                deferred.resolve();
-              });
-            });
-          });
-        }
-      });
-    }
     // mapnik
     jpegSuite.add('mapnik-file-file', {
       defer: true,
@@ -272,14 +213,6 @@ async.series({
           });
       }
     });
-    // images
-    if (typeof images !== 'undefined') {
-      jpegSuite.add('images-file-file', function () {
-        images(fixtures.inputJpg)
-          .resize(width, height)
-          .save(fixtures.outputJpg, { quality: 80 });
-      });
-    }
     // sharp
     jpegSuite.add('sharp-buffer-file', {
       defer: true,
@@ -569,8 +502,10 @@ async.series({
       defer: true,
       fn: function (deferred) {
         sharp(inputJpgBuffer)
-          .resize(width, height)
+          .resize(width, height, {
-          .crop(sharp.strategy.entropy)
+            fit: 'cover',
+            position: sharp.strategy.entropy
+          })
           .toBuffer(function (err, buffer) {
             if (err) {
               throw err;
@@ -584,8 +519,10 @@ async.series({
       defer: true,
       fn: function (deferred) {
         sharp(inputJpgBuffer)
-          .resize(width, height)
+          .resize(width, height, {
-          .crop(sharp.strategy.attention)
+            fit: 'cover',
+            position: sharp.strategy.attention
+          })
           .toBuffer(function (err, buffer) {
             if (err) {
               throw err;
@@ -696,31 +633,6 @@ async.series({
         });
       }
     });
-    // lwip
-    if (typeof lwip !== 'undefined') {
-      pngSuite.add('lwip-buffer-buffer', {
-        defer: true,
-        fn: function (deferred) {
-          lwip.open(inputPngBuffer, 'png', function (err, image) {
-            if (err) {
-              throw err;
-            }
-            image.resize(width, height, 'lanczos', function (err, image) {
-              if (err) {
-                throw err;
-              }
-              image.toBuffer('png', function (err, buffer) {
-                if (err) {
-                  throw err;
-                }
-                assert.notStrictEqual(null, buffer);
-                deferred.resolve();
-              });
-            });
-          });
-        }
-      });
-    }
     // mapnik
     pngSuite.add('mapnik-file-file', {
       defer: true,
@@ -833,14 +745,6 @@ async.series({
           });
       }
     });
-    // images
-    if (typeof images !== 'undefined') {
-      pngSuite.add('images-file-file', function () {
-        images(fixtures.inputPng)
-          .resize(width, height)
-          .save(fixtures.outputPng);
-      });
-    }
     // sharp
     pngSuite.add('sharp-buffer-file', {
       defer: true,