Java Hotspot(Tm) 64-Bit Server Vm Warning: Ignoring Option Maxpermsize

Java HotSpot(TM) 64-Bit Server VM warning: ignoring option MaxPermSize

Compatibility Guide for JDK 8 says that in Java 8 the command line flag MaxPermSize has been removed. The reason is that the permanent generation was removed from the hotspot heap and was moved to native memory.
So in order to remove this message
edit MAVEN_OPTS Environment User Variable:

Java 7

MAVEN_OPTS -Xmx512m -XX:MaxPermSize=128m

Java 8

MAVEN_OPTS -Xmx512m

OpenJDK 64-Bit Server VM warning: ignoring option MaxPermSize=350m;

This is only a warning saying the option has been ignored - so it should not cause any issues.

The JVM options should be located in {IntelliJ folder}/bin/idea64.exe.vmoptions (on windows - probably something similar on linux). You can edit that file and delete the maxpermsize option.

MaxPermSize Warning in Eclipse WildFly 8 and Java 8

You need to remove this argument from the "launch configuration" in your Wildfly server configuration in eclipse. It is no longer required when you are using java 8.

1) open server overview

2) click "open launch configuration"

3) edit "VM arguments" remove the " -XX:MaxPermSize=256m " argument.

4) save everything and start your wildfly via eclipse.

Message should be gone.

Java HotSpot(TM) 64-Bit Server VM warning

There is insufficient memory for the Java Runtime Environment to continue.

Native memory allocation (malloc) failed to allocate xxxxx bytes for committing reserved memory.

Possible reasons:

1. The system is out of physical RAM or swap space
2. In 32 bit mode, the process size limit was hit

Possible solutions:

1. Reduce memory load on the system
2. Increase physical memory or swap space
3. Check if swap backing store is full
4. Use 64 bit Java on a 64 bit OS
5. Decrease Java heap size (-Xmx/-Xms)
6. Decrease number of Java threads
7. Decrease Java thread stack sizes (-Xss)
8. Set larger code cache with -XX:ReservedCodeCacheSize=

If you are on Java 8 or later, please also see this question: Java HotSpot(TM) 64-Bit Server VM warning: ignoring option MaxPermSize

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