Comments on: Configuring IntelliJ IDEA VM options

By: David

David — Fri, 13 Jan 2012 17:54:04 +0000

Nice article but not actual navigation paths posted to direct the user as to where to apply the posted values such as MaxPermSize. :-S

By: RobM

RobM — Tue, 13 Dec 2011 01:56:57 +0000

This is the line currently in that config box (mentioned above) after some months of use and tweaking:
-XX:MaxPermSize=128m -XX:PermSize=128m -Xms1024m -Xmx1024m -XX:-UseGCOverheadLimit

By: RobM

RobM — Wed, 02 Nov 2011 05:24:31 +0000

This is the monkeyscript for the fix I’m using successfully in Intellij 10.5.2:

From the intellij menu:
“Run” - “Edit Configurations” -
Expand “Grails” - “Grails:[projectname]” - “Grails” tab
In the “VM Parameters” textbox, set the following:
-XX:MaxPermSize=256M
“Apply” and Ok your way out.
That line was blank when I started. If it has something in it already you may need to discover what the correct delimiter is to add this bit. BTW, that line was cut and paste from my working intellij, so it should be right.

By: RobM

RobM — Tue, 01 Nov 2011 06:49:34 +0000

Seems fixed now thanks to:
http://www.pauldeden.com/2011/06/how-to-fix-permgen-memory-error-in.html

By: RobM

RobM — Tue, 25 Oct 2011 00:00:58 +0000

This is some sort of slow-death torture.
Idea 10.5.2 on Vista Business SP2. Administrator account and a personal account with administrator privs.
The file and folder declined editing from my personal (with Administrator privs) account. But both say that “effective privileges” mean it’s editable. Finally turned off User Account Control and it permitted me to edit and save the file in place, but on changing back to my user account the file has reverted to some default setting:
-Xms128m
-Xmx512m
-XX:MaxPermSize=250m
-XX:ReservedCodeCacheSize=64m
-ea
Interesting to see that I can’t see line breaks in that string in the file in notepad, but pasted into here it breaks the lines? Nix line breaks in a windows config file???
What a mess. Why are there so many magic doors to open to set these?

By: Val

Val — Fri, 14 Oct 2011 23:01:21 +0000

I used version 9.0.3 on my old XP
Now I upgraded my machine with dual CPU and 3.16 GB
And IntelliJ 10.5.2
Previously I used -Xms128m -Xmx2048m -XX:MaxPermSize=250m -XX:ReservedCodeCacheSize=64m
It was pretty slow. Memory consumed by Idea process was over 1gb

Now I cannot run idea 10 with setting -Xmx2048m . It returns “too large” error.
I changed to -Xmx1024m, but it is working extremely slow - number of hours to load a project.
Please, advice.
Thanks.

By: Bjørn Chr

Bjørn Chr — Tue, 27 Sep 2011 10:56:11 +0000

“However, it is a well-known fact that JetBrains “eats its own dog food” and uses IntelliJ IDEA for development of new IntelliJ IDEA versions.”

Sounds like it could often become terrible confusing..

By: Vathanak

Vathanak — Sun, 18 Sep 2011 15:45:53 +0000

Hi,

A blog said (I forget it) that if you increase the MaxPermSize over 500m, there may be the memory problem because garbage collector might take forever to do its task. I don’t know it’s true or not. If it’s true, can you decrease it to 500m or can you try to set the maximum garbage collector pause to (in the file idea.vmoptions) :

-XX:MaxGCPauseMillis=10

That means that java’s GC will take max 10ms to do his work.

And use concurrent Mark-Sweep (CMS) Collector (But i’m not sure that this will help for latest version of IDEA)

-XX:+UseConcMarkSweepGC

Reference: http://stackoverflow.com/questions/4676604/how-to-improve-intellij-code-editor-speed

By: Damian Nowak

Damian Nowak — Thu, 15 Sep 2011 14:14:47 +0000

> when your project contains more than 10000 classes

How to check the number of classes in IDEA?

By: Ernst Bunders

Ernst Bunders — Wed, 27 Jul 2011 13:48:49 +0000

There is a related issue to idea memory settings, that I would love to get an answer to. It is becomming slightly vexing to me.
My vmsettings options are:
-Xms128m
-Xmx700m
-XX:MaxPermSize=250m
-XX:ReservedCodeCacheSize=64m

And when I look at the lower right, idea tells me it’s using ‘159M of 620M’
That would be nice, right?
But my os process manager tells me a different story: 1.5GiB WTF!!!

I am developing on a 4GiB machine, and usually my memory is full, thanks to idea. I don’t get this, and the weird thing is noone else seems to be troubled by this, i can’t find any comments about it.

I am currently using ubuntu 11.4 and idea-IU-107.105, but the problem was there from the start, about a year ago.

It’s not impossible to work, but is sure is annoying. If anything could be done, or if at least i could understand why this happens, I would be glad.

regards,

Ernst