Ron Ron - 7 months ago 446
Java Question

PHPStorm - Increase memory to more than 512MB

I'm using

PHPStorm
under
Win7 64bit
with
64bit Java (latest version I guess)
and working currently on an insanely big and chaotic project. There are many classes containing
10k LOC
and more. Therefore my
PHPStorm
runs out of memory once in a while.

I get this nice
Out-of-Memory
dialog suggesting increasing my memory settings. I currently have set in my
PhpStorm.exe.vmoptions
:

-server
-Xms128m
-Xmx512m
-XX:MaxPermSize=250m
-XX:ReservedCodeCacheSize=64m
-ea
-Dsun.io.useCanonCaches=false
-Djava.net.preferIPv4Stack=true
-XX:+UseCodeCacheFlushing
-XX:+UseConcMarkSweepGC
-XX:SoftRefLRUPolicyMSPerMB=50


The problem is: When I increase my memory to be used in this file I get the following error when starting the program:


Failed to create JVM: Error code -4


I googled around but nobody seems to want the memory to be more than
512MB
.

Does anybody know what I can do to use PHPStorm without any hazzle again?

Sure, I can reset the cache but this is not a permanent solution, right?

I read somewhere that adding this line to my
vmopitions
is a good idea, but I don't see any difference:

-server
....
-XX:MinHeapFreeRatio=15


Thanks,

Ron

Answer

Make sure that PhpStorm use 64-bit Java and not bundled one (which is 32-bit). You an check that in Help | About.

Generally speaking: with 64-bit Java you do not have to change that value as it works a bit differently compared to 32-bit one.

1) PhpStorm comes with bundled x86 Java and it is the first one that it tries; only then it looks for other Java installations -- check PhpStorm.bat for details (what environment variables and in which order). By defining one of those environment variables (which will point to your 64-bit Java installation) you can tell PhpStorm to use instead of bundled one.

2) PhpStorm v8 (currently in EAP stage) comes with 64-bit specific files: you should use PhpStorm64.exe and not PhpStorm.exe (same for .vmoptions file -- it should be PhpStorm64.exe.vmoptions).

I'm not sure how PhpStorm v7 works with 64-bit Java -- have never tried it this way myself.


Selecting the JDK version the IDE will run under

https://intellij-support.jetbrains.com/entries/23455956-Selecting-the-JDK-version-the-IDE-will-run-under