Best memory settings for eclipse 4.2 (STS 3.1) on Windows 7 64 bit?

Question

I apoligize in advance if this question is indeed too subjective as SO warns me.

My workstation has 8 gb of ram and runs windows 7 64 bit. I use the Spring tool Suite (3.1) but as soon as i am starting to open and modify the spring config (.xml) files, STS becomes incredibly slow.

I already tried switching off "build automatically" and to increase memory settings but no luck.

How should i change my .ini ? this is what i have set now:

-vm
C:/Program Files/Java/jdk1.7.0_07/bin/javaw.exe
-startup
plugins/org.eclipse.equinox.launcher_1.3.0.v20120522-1813.jar
--launcher.library
plugins/org.eclipse.equinox.launcher.win32.win32.x86_64_1.1.200.v20120522-1813
-product
org.springsource.sts.ide
--launcher.defaultAction
openFile
--launcher.XXMaxPermSize
4096M
-vmargs
-Dosgi.requiredJavaVersion=1.5
-Xms512m
-Xmx2048m
-XX:MaxPermSize=512m

My collageu running the same project in IntelliJ, has no problems.

Thank you!

Answer 1

After doing lot of research , this arguments solves my problem

-nosplash
--launcher.defaultAction
openFile
-vm
C:\Program Files\Java\jdk1.6.0_45\jre\bin\server\jvm.dll
#/Library/Java/JavaVirtualMachines/jdk1.7.0_25.jdk/Contents/Home/bin/java #OS X
-vmargs
-Xincgc
-Xss1m
-Duser.name=FirstName LastName
-Dfile.encoding=UTF-8
-Dosgi.requiredJavaVersion=1.6
-Declipse.p2.unsignedPolicy=allow
-Declipse.p2.MD5Check=false
-Xms128m
-Xmx1024m
-XX:NewSize=16m
-XX:PermSize=128m
-XX:MaxPermSize=400m
-XX:MaxPermHeapExpansion=20m
-XX:+UseConcMarkSweepGC
-XX:CMSInitiatingOccupancyFraction=70
-XX:+UseCMSInitiatingOccupancyOnly
-XX:+UseParNewGC
-XX:+CMSConcurrentMTEnabled
-XX:ConcGCThreads=2
-XX:ParallelGCThreads=2
-XX:+CMSIncrementalPacing
-XX:CMSIncrementalDutyCycleMin=0
-XX:CMSIncrementalDutyCycle=5
-XX:GCTimeRatio=49
-XX:MaxGCPauseMillis=20
-XX:GCPauseIntervalMillis=1000
-XX:+UseCMSCompactAtFullCollection
-XX:+CMSClassUnloadingEnabled
-XX:+DoEscapeAnalysis
-XX:+UseCompressedOops
-XX:+AggressiveOpts #Doesnt work with Android see Google Code Android issue 9883
-XX:+ExplicitGCInvokesConcurrentAndUnloadsClasses
-Xverify:none

Answer 2

http://www.youtube.com/watch?v=-JC7B1a_7dQ This is a good guide on optimal performance for eclipse and android

Answer 3

A 2gb heap is plenty for eclipse, I use it myself. My suspicion is the culprit is Eclipse 4.2 Juno. It has very well documented performance issues. There is a hidden 3.8 Juno version on the eclipse download site. It has all the same features that 4.2 Juno has but uses the old UI components which are more stable and performant.