问题描述
当尝试使用 50 个或更多用户运行 jMeter 时，它会给出 OutOfMemoryError:
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!
我尝试增加堆大小，但仍然出现相同的错误.
即使我试图删除所有听众，但没有任何改变.
I tried to increase the heap size but still getting the same error.
Even i tried to remove all the listeners but nothing changed.
推荐答案
看起来您只是缺少 Java 堆空间.这是正常的，因为默认情况下 JMeter 的堆分配非常低.它可以通过 -Xmx 参数控制.
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.
jmeter.bat 或 jmeter.sh 脚本中有一行建议启动 JMeter 为
There is a line in jmeter.bat or jmeter.sh script which recommends launching JMeter as
JVM_ARGS="-Xms512m -Xmx512m" jmeter.sh
您可以尝试增加最大堆，直到您不再收到这些错误.我建议将其设置为硬件 RAM 的 80%.
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.
还要考虑JMeter 性能和调优技巧文章，以确保您禁用内存消耗听众，不要过度编写，有效地使用后处理器等.
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.
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