CODEWITHSUNDEEP
javascriptphantomjsnightmare
XYZ
XYZ

Reputation: 27397

Slow performance on Mac OS X

I am currently learning how to use NightmareJS. I found the performance is so slow while I was running the code below. It took up to 30 seconds to get the output. Did I do anything wrong?

Moreover, I have tried to use wait() with a selector but that does not help so much.

I am not sure whether this is related to my Internet connection, however, open the same site using Google Chrome and perform the same task is faster than using Nightmare.

Soruce Code

var Nightmare = require('nightmare');

var after;
var before = Date.now();

new Nightmare({
    loadImages: false
  }).goto('https://www.wikipedia.org/')
  .type('#searchInput', process.argv[2])
  .click('input[name="go"]')
  .wait()
  .url(function(url) {
    after = Date.now();
    console.log('>>> [' + (after - before) / 1000.0 + 's] ' + url);
  })
  .run(function(err, nightmare) {
    if (err) console.log(err);
  });

Output

node n02_extract_wiki_link.js "node.js"
>>> [31.227s] https://en.wikipedia.org/wiki/Node.js

My current environment is listed below.

Mac OS X 10.10.4
node v0.12.5
PhantomJS 2.0.0
[email protected]

Upvotes: 1

Views: 1136

Answers (1)

takof
takof

Reputation: 83

This worked for me:
https://github.com/segmentio/nightmare/issues/126#issuecomment-75944613

It's the socket connection between the phantomjs module and it's dependency, shoe.

You can manually edit shoe yourself. Go into node_modules/phantom/shoe/index.js and change line 8 to read

var server = sockjs.createServer({
        heartbeat_delay : 200
});

Upvotes: 1

Related Questions