What may be limiting the number of Katalon instances I can run at one time?

I am using Katalon in conjunction with Apache JMeter to try to kick off multiple command line test executions at once. As such, I have a distributed set of test servers to try to simulate as much load as I possibly can.

I have noticed that if I get to the point where any given server is running more than 2 command line tests at once, the tests begin to error in various ways.

I have confirmed that I am not running into CPU or memory constraints on the servers, nor does increasing the memory allocated to the JVM seem to help.

What else could be limiting the number of concurrent Katalon instances I can run?

Any help would be much appreciated.


Upvoted. Great question, Nic. I’ll be heading in that direction at some point – glad someone is doing crazy stuff like this, paving the way. Thanks.


Hello everyone,

Currently, you can integrate Katalon Studio with JMeter via the JMeter Integration plugin which is free. Alternatively, you can manually integrate those two tools yourself by following this guide.