How to give more memory to IntelliJ Idea 9-11

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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.

Wozniak answered 12/3, 2010 at 20:13 Comment(0)

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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

Froma answered 12/3, 2010 at 21:16 Comment(5)

Thanks for the answer but on Windows, file name is %IDEA_HOME%\bin\idea.exe.vmoptions – Oster 20/12, 2012 at 16:23

Note that on 10.8 Mountain Lion this does not work, you need to edit the $IDEA_APP/bin/idea.vmoptions instead. – Flynt 21/1, 2013 at 8:34

agree with Erik, the answer doesn't apply for Lion, don't buy into votes – Makowski 10/5, 2013 at 14:16

For me editing $IDEA_HOME/Contents/Info.plist on Mountain Lion worked – Waitabit 30/6, 2013 at 1:23

On OS X Mavericks, only idea.vmoptions worked for me. – Cleek 13/6, 2014 at 19:48

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Edit the following file:

idea/bin/idea.vmoptions

Margheritamargi answered 12/3, 2010 at 20:18 Comment(1)

Also see tsmets answer for x64 systems. – Gait 23/6, 2014 at 9:2

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

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

Corbett answered 12/3, 2010 at 20:19 Comment(2)

Sorry, I forgot to mention that I am on MacOS. I don't see this file idea.exe.vmoptions Specific number shouldn't matter but it is 10.5 Thanks – Wozniak 12/3, 2010 at 20:34

In IntelliJ Idea 10.5. For 64bit. version edit idea64.exe.vmoptions – Nunnally 2/12, 2011 at 9:6

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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

Westerfield answered 30/1, 2013 at 9:11 Comment(1)

Newer versions (12.1+) apparently include idea64.vmoptions. If unsure which one you need, check the output of uname -i. – Amylo 5/4, 2013 at 15:38

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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:

Wozniak answered 12/3, 2010 at 22:59 Comment(0)

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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

Danell answered 9/8, 2013 at 10:49 Comment(0)

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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

Moray answered 8/1, 2014 at 16:33 Comment(0)

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