You need to make sure that JMeter has enough resources in order to run your tests. Like memory, CPU, network (socket) resources. Same as with any other performance testing tool really. You do not specify how many jmeter instances are running your tests, my expierience is that running 1000 threads in a single jmeter jvm is quite tricky and often requires some tuning and I would say like at least 12GB of heap using the G1 collector. But that heavily depends on the complexity of your scripts. Distribute the load generation over more than one jmeter jvm (and prefferably machines, IP adresses etc).
Tuning wise you can turn of features like parse css, js and html, not save response content, and obviously not use any listeners in your testplan that consume a lot of memory. I only use Simple File Writer for logging errors and the Background Listener to send metrics to InfluxDB for real time analysis in Grafana with for example the provided dashboard in JMeter. /CG -----Ursprungligt meddelande----- Från: Deepak Goel <[email protected]> Skickat: den 18 augusti 2026 07:03 Till: JMeter Users List <[email protected]> Ämne: JMeter and Castr Hello When i test castr link with Jmeter, the performance results get skewed. https://player.castr.com/live_b1c5cac06e1e11f1a1fb13e06ed8df11 Jmeter gives very high response times of castr under load (1000 concurrent users or so), memory of the JMeter machine itself gets finished. However castr itself takes less than a second without JMeter. Any thoughts? Deepak "The greatness of a nation can be judged by the way its animals are treated - Mahatma Gandhi" +91 73500 12833 [email protected] LinkedIn: www.linkedin.com/in/deicool "Plant a Tree, Go Green" Make In India : http://www.makeinindia.com/home Detta meddelande kommer från en extern avsändare. Var extra vaksam innan du klickar på länkar eller bifogade filer.
