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[SOLVED] Exception in thread "Output Stream Monitor" java.lang.OutOfMemoryError: Java heap [message #1711459]

Fri, 16 October 2015 09:38

Hic LA

Messages: 28
Registered: July 2015

Junior Member

Hi,
I have just updated my testing environment to use RCPTT 2.0.1 and now I am getting an OutOfMemory error when running some heavyweight test suite. It runs under Java 8 32bits.
It seems that if fails more or less after running 20 test cases. In other test suites of different type, I have more than 30 but they do not fail because of heap memory.
You can see in the following error log that it was consuming less than 200mb. Maybe it is related to something done with Arrays.

[java] Testcase Artifacts:124
[java] AUT-0:Launching
[java] AUT-0:Product:
[java] AUT-0:Application: org.eclipse.ui.ide.workbench
[java] AUT-0:Architecture: x86
[java] 32bit arch is selected because AUT uses launcher library
[java] "plugins/org.eclipse.equinox.launcher.win32.win32.x86_1.1.300.v20150527-1151" specified in config file: MyApp.ini
[java] C:\Jenkins\jobs\workspace\aut-MyApp: AUT arguments: -os ${target.os} -arch ${target.arch} -consoleLog
[java] C:\Jenkins\jobs\workspace\aut-MyApp: AUT VM arguments: -Dosgi.requiredJavaVersion=1.8 -Xms512m -Xmx1024m -Djava.net.preferIPv4Stack=true -XX:MaxPermSize=512m -Dlogback.configurationFile=./configuration/logback.xml -DWNStandalone=true -DWNShowNewWorkspaceWizardAtStartUp=false -Djava.util.Arrays.useLegacyMergeSort=true -Dcom.sun.management.jmxremote.port=7777 -Dcom.sun.management.jmxremote.ssl=false -Dcom.sun.management.jmxremote.authenticate=false
...
...
[java] Used memory: 182.4MB
[java] Exception in thread "Output Stream Monitor" java.lang.OutOfMemoryError: Java heap space
[java] at java.util.Arrays.copyOf(Arrays.java:3332)
[java] at java.lang.AbstractStringBuilder.expandCapacity(AbstractStringBuilder.java:137)
[java] at java.lang.AbstractStringBuilder.ensureCapacityInternal(AbstractStringBuilder.java:121)
[java] at java.lang.AbstractStringBuilder.append(AbstractStringBuilder.java:421)
[java] at java.lang.StringBuilder.append(StringBuilder.java:136)
[java] at org.eclipse.rcptt.internal.launching.aut.ConsoleOutputListener$1.streamAppended(ConsoleOutputListener.java:38)
[java] at org.eclipse.debug.internal.core.OutputStreamMonitor$ContentNotifier.run(OutputStreamMonitor.java:267)
[java] at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:42)
[java] at org.eclipse.debug.internal.core.OutputStreamMonitor$ContentNotifier.notifyAppend(OutputStreamMonitor.java:278)
[java] at org.eclipse.debug.internal.core.OutputStreamMonitor.fireStreamAppended(OutputStreamMonitor.java:118)
[java] at org.eclipse.debug.internal.core.OutputStreamMonitor.read(OutputStreamMonitor.java:159)
[java] at org.eclipse.debug.internal.core.OutputStreamMonitor.access$1(OutputStreamMonitor.java:137)
[java] at org.eclipse.debug.internal.core.OutputStreamMonitor$1.run(OutputStreamMonitor.java:212)
[java] at java.lang.Thread.run(Thread.java:745)

Does anyone have any idea?
Thank you.

[Updated on: Mon, 19 October 2015 02:17] by Moderator

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Re: Exception in thread "Output Stream Monitor" java.lang.OutOfMemoryError: Java heap spac [message #1711479 is a reply to message #1711459]

Fri, 16 October 2015 11:21

Markus Manck

Messages: 34
Registered: June 2015

Member

Hi,

I can offer no help on the cause of the additional memory consumption, but maybe changing the memory settings of the runner not the AUT may avoid the exception.

The runners VM settings can be changed in the pom.xml by adding the subelements as below to your configuration element.

<runner>
   <vmArgs>
       <vmArg>yourarg</vmArg>
   </vmArgs>
<runner>

This helped me for memory extensive test cases.

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Re: Exception in thread "Output Stream Monitor" java.lang.OutOfMemoryError: Java heap spac [message #1711510 is a reply to message #1711479]

Fri, 16 October 2015 14:04

Hic LA

Messages: 28
Registered: July 2015

Junior Member

Thank you for your support.
It seems is working fine now. We have assigned more memory for both AUT and Test Runner.
Thanks

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