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jmeter test failed with out of memory error

Tags:

java

jmeter

When try to run jMeter with 50 or more user it gives OutOfMemoryError:

2013/12/18 13:35:15 ERROR - jmeter.threads.JMeterThread: Error processing Assertion  java.lang.OutOfMemoryError: Java heap space
2013/12/18 13:35:15 ERROR - jmeter.threads.JMeterThread: Error processing Assertion     java.lang.OutOfMemoryError: Java heap space
2013/12/18 13:35:15 ERROR - jmeter.threads.JMeterThread: Error processing Assertion  java.lang.OutOfMemoryError: Java heap space
2013/12/18 13:35:15 ERROR - jmeter.threads.JMeterThread: Error processing Assertion  java.lang.OutOfMemoryError: Java heap space
2013/12/18 13:35:16 ERROR - jmeter.threads.JMeterThread: Test failed! java.lang.OutOfMemoryError: Java heap space
2013/12/18 13:35:17 ERROR - jmeter.threads.JMeterThread: Test failed!

I tried to increase the heap size but still getting the same error.
Even i tried to remove all the listeners but nothing changed.

like image 963
shab Avatar asked Dec 18 '13 00:12

shab

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1 Answers

It looks like that you're just lacking Java Heap Space. It's normal as JMeter by default has a very low heap allocation. It's controllable via -Xmx parameter.

There is a line in jmeter.bat or jmeter.sh script which recommends launching JMeter as

JVM_ARGS="-Xms512m -Xmx512m" jmeter.sh

You can try increasing maximum heap until you'll stop receiving these errors. I'd recommend to set it to something like 80% of your hardware RAM.

Also consider JMeter Performance and Tuning Tips article to make sure that you disable memory-consuming listeners, don't overscript, use post-processors efficiently, etc.

like image 61
Dmitri T Avatar answered Sep 18 '22 07:09

Dmitri T
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