How should I set the memory for IntelliJ 14?

Question

I just upgraded my IntelliJ to 14.0.3. But there's always a Out Of Memory dialog popped up to ask me to set the memory.

Following is my settings:

I thought it's enough. But the dialog shows from time to time, and sometimes, it's no responding that I have to shutdown it.

How should set this for IntelliJ 14? Any ideas?

Answer 1

Open Intellij IDE's vmoptions file

For Mac Users

Help | Edit Custom VM Options...

or

Library > Preferences > Idea<YourVersion> > idea.vmoptions

For Window (32bit) Users

C:\Program Files (x86)\JetBrains\IntelliJ IDEA <your_version>\bin\idea.exe.vmoptions

For Window (64bit) Users

C:\Program Files (x86)\JetBrains\IntelliJ IDEA <your_version>\bin\idea64.exe.vmoptions

and setup it's memory as you wish. Below is sample settings for 2GB

-Xms128m -Xmx2048m -XX:MaxPermSize=350m -XX:ReservedCodeCacheSize=240m -XX:+UseCodeCacheFlushing -XX:+UseCompressedOops 

Hopefully this help.

Answer 2

I have allocated 4 GB to intelliJ 14 on windows 7. My settings in idea64.exe.vmoptions are :

-Xms4608m
-Xmx4608m
-Xmn2g
-Xss128k
-XX:MaxPermSize=1536m
-XX:ParallelGCThreads=20