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Date: Tue, 03 Aug 2004 22:06:51 +0200
From: Reinhard Poetz <reinhard@apache.org>
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To: dev@cocoon.apache.org
Subject: Re: Load-testing flowscript webapps
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Sylvain Wallez wrote:

> Hi all,
>
> I want to do some automated load testing on a flowscript/cform 
> application involving a sequence of pages. The problem is that the 
> continuation IDs must be extracted from a page to be re-injected in 
> the next request.
>
> Have some of you already tackled this problem?

> JMeter seems to have some obscure features related to form value 
> extraction [1] that maybe could do the job (haven't tested it), but I 
> would like to have a more general solution that could work easily with 
> any load-testing tool.
>
> My idea is to write a special implementation of ContinuationManager 
> that would produce IDs based on a counter stored in a session (meaning 
> each user has a different counter). That way, one can record a test 
> scenario using JMeter in proxy mode, and replay it with no modifications.
>
> I also plan to write an action that sets the value of the ID counter 
> so that a test scenario can force continuation numbering to an initial 
> known value.
>
> The drawback of this implementation compared to the current one is 
> that continuations become tied to the user session whereas in the 
> current implementation they are theoretically not session-related. 
> "theoretically" because in most cases there exists a global scope in 
> the flowscript that links a continuation to the user's session.
>
> WDYT? Do you have other ideas?
>
> [1] 
> http://jakarta.apache.org/jmeter/usermanual/component_reference.html#HTML_Link_Parser 
>
>

I'm don't know all the load testing tools out there but wouldn't need 
each tool some functionality that makes it possible to read out values 
from a result page? If so, a "generic" solution isn't needed, is it. At 
least IMHO. This shouldn't stop you from writing this special 
ContinuationManager impl. ;-)

How-to set up JMeter is described here: 
http://wiki.apache.org/cocoon/LoadTestingFlowWithJMeter

-- 
Reinhard