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Silly benchmarks
var casper = require("casper").create();
var start = new Date().getTime();
var links = [
"http://google.com/",
"http://yahoo.com/",
"http://bing.com/"
];
casper.start();
casper.each(links, function(self, link) {
this.thenOpen(link, function() {
var now = new Date().getTime();
this.echo(link + ' loaded in ' + (now - start) + 'ms');
start = now;
});
});
casper.run();
http://google.com/ loaded in 3643ms
http://yahoo.com/ loaded in 12398ms
http://bing.com/ loaded in 1005ms
var links = [
"http://google.com/",
"http://yahoo.com/",
"http://bing.com/"
];
var start = new Date().getTime();
var page = require('webpage').create();
page.open("http://google.com/", function() {
var now = new Date().getTime();
console.log('loaded google in ' + (now - start) + 'ms');
start = now;
page.open("http://yahoo.com/", function() {
var now = new Date().getTime();
console.log('loaded yahoo in ' + (now - start) + 'ms');
start = now;
page.open("http://bing.com/", function() {
var now = new Date().getTime();
console.log('loaded bing in ' + (now - start) + 'ms');
start = now;
phantom.exit();
});
});
});
loaded google in 4568ms
loaded yahoo in 10839ms
loaded bing in 1849ms

kud commented Jun 10, 2012

Results:

  • Casperjs:

http://google.com/ loaded in 1727ms
http://yahoo.com/ loaded in 9154ms
http://bing.com/ loaded in 1204ms

  • Phantomjs

loaded google in 2402ms
loaded yahoo in 8139ms
loaded bing in 667ms

Owner

n1k0 commented Jun 10, 2012

Mouais, faudrait en jouer au moins 1000 pour avoir des moyennes parlantes ;)

Merci en tout cas !

Owner

n1k0 commented Jun 10, 2012

En tout cas, tout ceci est très lié à la qualité de la connectivité… Sinon essaye de désactiver le chargement des plugins et des images:

var casper = require('casper').create({
    pageSettings: {
        loadImages: false,
        loadPlugins: false
    }
});

Le chargement des images peut pas mal altérer le temps de chargement des pages… Yu peux aussi utiliser le cache du navigateur en passant l'option --disk-cache=yes:

$ casperjs --disk-cache=yes casper_speed.js

(l'astuce fonctionne aussi avec phantomjs)

kud commented Jun 10, 2012

kud commented Jun 10, 2012

casperjs ❯ casperjs --disk-cache=yes casper_speed.js
http://google.com/ loaded in 1196ms
http://yahoo.com/ loaded in 3492ms
http://bing.com/ loaded in 1362ms
casperjs ❯ casperjs --disk-cache=yes casper_speed.js
http://google.com/ loaded in 659ms
http://yahoo.com/ loaded in 2451ms
http://bing.com/ loaded in 911ms
casperjs ❯ casperjs --disk-cache=yes casper_speed.js
http://google.com/ loaded in 656ms
http://yahoo.com/ loaded in 2489ms
http://bing.com/ loaded in 751ms
casperjs ❯ casperjs --disk-cache=yes casper_speed.js
http://google.com/ loaded in 656ms
http://yahoo.com/ loaded in 2571ms
http://bing.com/ loaded in 730ms

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