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I am getting java.lang.OutOfMemoryError: PermGen space, upon analyzing the hprof, I found that 

One instance of "org.apache.jasper.compiler.JspRuntimeContext" loaded by   
"org.jboss.mx.loading.UnifiedClassLoader3 @ 0x772dd7f80" 
occupies 8,30,89,712 (29.32%) bytes. 
The memory is accumulated in one instance of 
"java.util.concurrent.ConcurrentHashMap$Segment[]" loaded by
"<system class loader>"

Using Jboss server.

Found one similar at : JVM HeapDump: The memory is accumulated in one instance of "java.util.concurrent.ConcurrentHashMap$Segment (but related to tomcat)

What is the cause/solution of this problem? Tell me if I should provide more information.

Community
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Vineet Singla
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2 Answers2

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by using eclipse IDE you can change the VM argument

double click on the server > open Lunch Configuration > Arguments > VM Arguments

and append below two lines in your VM Arguments field

-Xms256m -Xmx1024m -XX:+DisableExplicitGC -Dcom.sun.management.jmxremote
-XX:PermSize=256m -XX:MaxPermSize=512m

it will sure solve your problem

Nirav Prajapati
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If you are getting the questioned error in the secondary Eclipse Application, adding -XX:MaxPermSize=512m in ini won't help. You need to go into debug or run configuration->arguments and add that piece in VM arguments.I also increased others memory limits so:

-Dosgi.requiredJavaVersion=1.5 -Xms120m -Xmx2048m -XX:MaxPermSize=1024m

paul
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  • PermSize=256m,I cannot change this on prod server, doesnt from the issue it appears to be a memory leak from the jboss server side ? – Vineet Singla Jun 17 '14 at 11:03