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From Shmuel Krakower <>
Subject Re: Web Driver based Sampler?
Date Sat, 21 Apr 2012 15:34:36 GMT
This is something to discuss. HP implemented this in their latest version
of load runner with the new protocol which I cannot recall it's name.

I do find it useful to allow more close to reality load testing.
On the other hand, it is absolutly not mandatory as load testing is all
about loading the system under test, but may be a stepping stone.

One thing which I read is that webdriver is not very accurate on time
stamping so this may be a pain in the ass to try and use it to provide
accurate response times.

Other toughts from the community?

בתאריך 2012 4 21 09:56, מאת "Cheen-Pin Lim" <>:

> Hi,
> After looking at the current HTTP Sampler, I would like to propose a
> WebDriver based implementation.  The problem is that with a lot of modern
> websites using AJAX, advanced CSS3 (transitions/transforms) to do the
> rendering, the performance problem may not be 'visible' to the standard
> HTTP Sampler.  The idea is that if we could use JMeter to control a browser
> and collect the time it takes to render each 'page' it would give the users
> an understanding of how long a page would take to render.
> Some of the high level goals are as follows:
>   1. Allow any WebDriver supported browser to be used to perform the
>   Sampling.
>   2. Provide a BeanShell/BSF style pane where the user can script the
>   behaviour of WebDriver.
> I've got a very basic implementation working here:
> - you'll have to switch to the 'webmeter'
> branch to see the changes.  There are limitations with this proof of
> concept, mainly:
>   1. It only creates Firefox instances
>   2. I've only provided Javascript lang support using BSF.
> Some outstanding questions:
>   1. How to support Phone (Android/iOS) based WebDriver, as these seem to
>   expect to only connect to a single phone.
> I would be happy to contribute the changes back to JMeter.  Can I get some
> feedback on this proposal, and what I need to do to contribute my changes
> back to the main JMeter codebase?
> regards,
> CP Lim

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