Tutorial :How to give more memory to IntelliJ Idea 9-11



Question:

This concerns Intellij from 9 to 11. In the IDEA window On the bottom right corner I see the current memory usage, typically "224M of 254M" How do I give more memory to Idea so it may read like "224M of 512M" ?

Thank you.


Solution:1

On Mac, $IDEA_HOME/Contents/Info.plist

 ~: grep --context=5 Xmx /Applications/Maia-IU-94.426.app/Contents/Info.plist               <string>true</string>              <key>apple.awt.fullscreencapturealldisplays</key>              <string>false</string>          </dict>          <key>VMOptions</key>          <string>-Xms128m -Xmx912m -Dfile.encoding=UTF-8 -XX:MaxPermSize=250m -ea -agentlib:yjpagent=disablej2ee,disablecounts,disablealloc,sessionname=IntelliJIdea90 -Xbootclasspath/a:../lib/boot.jar</string>          <key>WorkingDirectory</key>          <string>$APP_PACKAGE/bin</string>      </dict>  </dict>  </plist>  

On Windows/Linux, %IDEA_HOME%\bin\idea.vmoptions


Solution:2

Edit the following file:

idea/bin/idea.vmoptions  


Solution:3

For Windows, in your IntelliJ Idea folder modify idea.exe.vmoptions.

See http://blogs.jetbrains.com/idea/2006/04/configuring-intellij-idea-vm-options/


Solution:4

If you are using:

  • Ubuntu
  • 64 bit hardware

then you need to create idea64.vmoptions by simply copying the options from idea.vmoptions file

cat idea.vmoptions > idea64.vmoptions  

The parameters remain the same: -Xmx1024M -Xms512M


Solution:5

On the MacOS find the folder where Idea is installed. then open file

Contents/Info.plist  

Go all the way to the bottom and find the section that looks like this:

<key>VMOptions</key> <string>-Xms64m -Xmx512m -XX:MaxPermSize=128m -Xbootclasspath/p:  


Solution:6

go to that path "C:\Program Files (x86)\JetBrains\IntelliJ IDEA 12.1.4\bin\idea.exe.vmoptions" and change size to -Xmx512m

-Xms128m  -Xmx512m  -XX:MaxPermSize=250m  -XX:ReservedCodeCacheSize=64m  -XX:+UseCodeCacheFlushing  -ea  -Dsun.io.useCanonCaches=false  -Djava.net.preferIPv4Stack=true  

hope its will work


Solution:7

On windows 7 (64-bits).

In the folder : C:\Program Files (x86)\JetBrains\IntelliJ IDEA Community Edition 13.0\bin

There is a file named : idea64.exe.vmoptions

-Xms128m  -Xmx750m  -XX:MaxPermSize=350m  -XX:ReservedCodeCacheSize=96m  -ea  -Dsun.io.useCanonCaches=false  -Djava.net.preferIPv4Stack=true  -XX:+UseCodeCacheFlushing  -XX:+UseConcMarkSweepGC  -XX:SoftRefLRUPolicyMSPerMB=50  

Beware that if the underlying JVM used is 32-bits, the maximum memory is still somewhere below 2048Mb


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