thread local regexp?

[Jochen Hinrichsen <jo...@db.com>]

Hi,

the application i'm testing makes heavy use of jsp in combination with JavaScript to carry user session information. I did not find a test-tool that could handle it, but jmeter can. Great!

However, i found no other solution than using __regexp. This works fine for one Thread in a Thread Group, but as soon as i want to put some load on the system and increase the number of threads (simulating multiple parallel users), the second set of user session variables overwrites the first one because regular expressions are global.

Being a newbie to jmeter, i think i can

1. Run multiple jmeter instances with each of them having one Thread. As i'm planning for about 100 parallel users, this results in 100 JVMs.
2. Make the ID of the current thread part of the session variable , e.g. __regexp(,,,,,, window_context_${__threadNum}). Not very manageable.
3. Modify the jmeter source to make regular expressions ThreadLocal. Same result as with __counter : First argument TRUE if you wish each simulated user's counter to be kept independent and separate from the other users.

Can anyone image drawbacks if all regular expressions were looked up thread local first?

Jochen Hinrichsen
Kambrium.net Technologies



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