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This is the new load testing file: https://bitbucket.org/rbraakman/etherpad-stresstest
BELOW is the original load testing file.
This load tester is extremely useful for testing how many dormant clients can connect to etherpad.
TODO:
Emulate characters being typed into a pad
HOW TO USE (from @mjd75) proper formatting at: https://github.com/ether/etherpad-lite/issues/360
Server 1:
Installed Node.js (etc), EtherPad and MySQL
Server 2:
Installed Xvfb and PhantomJS
I installed Xvfb following (roughly) this guide: http://blog.martin-lyness.com/archives/installing-xvfb-on-ubuntu-9-10-karmic-koala
#sudo apt-get install xvfb
#sudo apt-get install xfonts-100dpi xfonts-75dpi xfonts-scalable xfonts-cyrillic
Launched two instances of Xvfb directly from the terminal:
#Xvfb :0 -ac
#Xvfb :1 -ac
I installed PhantomJS following this guide: http://code.google.com/p/phantomjs/wiki/Installation
#sudo add-apt-repository ppa:jerome-etienne/neoip
#sudo apt-get update
#sudo apt-get install phantomjs
I created a small JavaScript file for PhatomJS to use to control the browser instances:
### BEGIN JAVASCRIPT ###
var page = new WebPage(),
t, address;
if (phantom.args.length === 0) {
console.log('Usage: loader.js <some URL>');
phantom.exit();
} else {
t = Date.now();
address = phantom.args[0];
var page = new WebPage();
page.onResourceRequested = function (request) {
console.log('Request ' + JSON.stringify(request, undefined, 4));
};
page.onResourceReceived = function (response) {
console.log('Receive ' + JSON.stringify(response, undefined, 4));
};
page.open(address);
}
### END JAVASCRIPT ###
And finally a launcher script that uses screen to run 400 instances of PhantomJS with the above script:
### BEGIN SHELL SCRIPT ###
#!/bin/bash
# connect 200 instances to display :0
for i in {1..200}
do
DISPLAY=:0 screen -d -m phantomjs loader.js http://ec2-50-17-168-xx.compute-1.amazonaws.com:9001/p/pad2 && sleep 2
done
# connect 200 instances to display :1
for i in {1..200}
do
DISPLAY=:1 screen -d -m phantomjs loader.js http://ec2-50-17-168-xx.compute-1.amazonaws.com:9001/p/pad2 && sleep 2
done
### END SHELL SCRIPT ###
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