75 lines
2.2 KiB
Text
75 lines
2.2 KiB
Text
This load tester is extremely useful for testing how many dormant clients can connect to etherpad lite.
|
|
|
|
TODO:
|
|
Emulate characters being typed into a pad
|
|
|
|
HOW TO USE (from @mjd75) proper formatting at: https://github.com/Pita/etherpad-lite/issues/360
|
|
|
|
Server 1:
|
|
Installed Node.js (etc), EtherPad Lite 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 ###
|