What is PermGen error in minecraft?

A java. OutOfMemoryError: PermGen Space is a runtime error in Java which occurs when the permanent generation (PermGen) area in memory is exhausted. The PermGen area of the Java heap is used to store metadata such as class declarations, methods and object arrays.

What is PermGen size?

The default size of PermGen memory is 64 MB on 32-bit JVM and 82 MB on the 64-bit version.

What is Minecraft PermGen?

-XX:MaxPermSize=N – sets the maximum size of the Permanent Generation space. Here are the best settings for Optifine in Minecraft 1.12. Use this syntax to specify the amount of memory the JVM should use: PermGen (Permanent Generation) is a special heap space separated from the main memory heap.

What is PermGen update Java?

In JDK 8.0 the Permanent Generation (PermGen) space has completely been removed and is kind of replaced by a new space called Metaspace. The consequences of the PermGen removal is that obviously the PermSize and MaxPermSize JVM arguments are ignored and you will never get a java. lang.

What is the Max permgen space in Minecraft?

I have a FTB Unleashed 1.1.7 server running and I have been getting the following error as of lately “java.lang.OutOfMemoryError: PermGen space”. -XX:+CMSClassUnloadingEnabled -XX:+CMSPermGenSweepingEnabled along with setting the MaxPermSize -XX:MaxPermSize=128M.

Why do I have a permgen space error?

Reloading is filling up the PermGen space. Don’t reload. Try to higher your permgen space to let this error occur not as often (not recommended). Because Java 7 has some memory problems with the class loading, you can update to Java 8 to avoid the error (recommended). Click to expand… Thanks I’ll try java 8 soon.

What should the permgen flag be in Minecraft?

For the former case, there are literally dozens of settings that need to be considered. For a very big server there is a lot more to tune than just the -XX:MaxPermSize. A PermSize of around -XX:MaxPermSize=1G and a heap around -Xmx=4G to -Xmx=6G should still be fairly safe. I would not go much beyond this to keep server performance.

How to keep your permgen clean in Minecraft?

Using -XX:CMSClassUnloadingEnabled will only help to keep your PermGen ( -XX:MaxPermSize) clean but not keeping your overall heap clean. For the former case, there are literally dozens of settings that need to be considered. For a very big server there is a lot more to tune than just the -XX:MaxPermSize.