jvm-arguments Archives

Java, Programming

IT Nursery

What does JVM flag CMSClassUnloadingEnabled actually do?

I cannot for the life of me find a definition of what the Java VM flag CMSClassUnloadingEnabled actually does, other than some very ...

June 4, 2022
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Java, Programming

IT Nursery

Difference between _JAVA_OPTIONS, JAVA_TOOL_OPTIONS and JAVA_OPTS

I thought it would be great to have a comparison between _JAVA_OPTIONS and JAVA_TOOL_OPTIONS. I have been searching a bit for one, but ...

May 30, 2022
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What does -XX:MaxPermSize do?

Specifically, why would it help to fix a PermGen OutOfMemoryError issue? Also, bonus points for an answer that points me to the documentation ...

May 18, 2022
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How to increase IDE memory limit in IntelliJ IDEA on Mac?

I’m using IDEA 12 Leda on Mountain Lion. I wanted to increase the maximum memory that IDE can use. I set the VMOptions ...

May 12, 2022
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“Error occurred during initialization of VM; Could not reserve enough space for object heap” using -Xmx3G

First of all, I have a box with 8gb of ram, so I doubt total memory is the issue. This application is running ...

April 8, 2022
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What does -XX:MaxPermSize do?

The permanent space is where the classes, methods, internalized strings, and similar objects used by the VM are stored and never deallocated (hence ...

April 7, 2022
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