Garry, if mechanism like locks or semaphores are desired, they should be implemented within the tested application. JMeter merely simulates USING the application. It won't supply you with extra security mechanism not designed/not implemented in the tested application.
Best regards / Viele Grüße
Noam Paz
"Garry L. Thompson" <[EMAIL PROTECTED]>
27.02.2006 20:09
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Locks or semaphores in Jmeter?
Is there any concept of locks or semaphores in Jmeter? I am currently testing
a web based API which accesses an internal database. I do a call to the API
via the http request sampler. I then do another API call to verify that the
correct thing happens. This works great with a single thread. However, when I
go multi-threaded I get random failures. I am guessing that multiple threads
are changing the same record in the database at the same time.
Is there anyway to make 2 web requests an exclusive operation? This would seem
to me to be a common problem with a multi-threaded stress tool. I've looked
through the manual and can not find any type of locking mechanism. Otherwise
does anyone having any ideas on how to simulate one? I'm thinking maybe just
setting a global jmeter variable and then checking it's value before doing
anything with the database. However, I don't think this would work running
jmeter across multiple platforms.
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