Comments on: Celerity: first impressions

By: Alister Scott

Alister Scott — Thu, 02 Jun 2011 11:23:07 +0000

Sorry I haven’t seen this issue.

By: Karthik

Karthik — Wed, 18 May 2011 12:45:34 +0000

Hi,

This is really useful. I am doing a spike to use celerity for some of our automated tests. However Celerity hangs forever when trying to click a button. Any thoughts on this please? I am using jruby1.5.6 on a fedora box.

My sample code:

require ‘rubygems’
require “celerity”
require “rspec”
browser = Celerity::Browser.new

browser.goto(url)
browser.text_field(:name, ‘username’).set(‘username’)
browser.text_field(:name, ‘password’).set(‘password’)
browser.button(:id=>’signinButton’, :title=>’Sign in’).click
browser.title.should == expected_title

By: Patrick Lightbody

Patrick Lightbody — Sat, 17 Oct 2009 12:20:37 +0000

Guy,
My company, BrowserMob, is now rolling out a load testing solution that includes support for something very similar to Celerity. So in addition to our real browser load testing service (which is based on Selenium) and our virtual user testing (which is raw HTTP), we’ll now have this option as well.

If you’re interested in trying it out (we’re looking for beta testers), please let us know by dropping a note to support@browsermob.com

Patrick

By: Alister Scott

Alister Scott — Sat, 17 Oct 2009 08:51:54 +0000

You could simply use a version control system and check out the same script onto multiple machines.
The script could have a loop from/until a certain time to ensure synchronization.

By: Guy

Guy — Wed, 14 Oct 2009 11:58:54 +0000

I find this entry as very useful. I’m looking for a way to run celerity on few machines on the same time to do basic load testing. Does celerity support such a feature? Is this feasible idea?
Alister – Your post are extremely handy. keep on update with great ideas.

Many Thanks,

Guy

By: Alister Scott

Alister Scott — Sun, 06 Sep 2009 21:55:04 +0000

Thanks for your comments Patrick. The idea of running this in the cloud sounds very exciting and promising.

By: Patrick Lightbody

Patrick Lightbody — Sun, 06 Sep 2009 14:27:17 +0000

I’m really glad to see people considering alternatives besides standard protocol-focussed tools (JMeter, Apache Bench, etc) when it comes to load testing. Celerity is backed by HtmlUnit, a very nice browser simulator. It has a few quirks (ie: doesn’t do concurrent object download, some JS libs break it, etc) but it’s improving every day.

At BrowserMob, we chose to simply use the power of EC2 to allow us to drive as many real browsers as possible. As you noted, running 30 on a single machine will break it, so we ended up taking a very conservative path: 1 browser per 1 CPU core + 1 GB of RAM. The great thing about EC2 is the prices are still pretty low, so we can pass the savings on to our customers and be one of the lowest cost load testing services out there.