Eclipse IDE speed sluggish on Snow Leopard Macbook
I've recently installed eclipse 3.4 on mac for java and flex coding - I noticed that the eclipse IDE on a mac is much slower than on a PC. By slow, I mean the UI and text editing seems to lag in comparison to eclipse in a windows environment or on a PC.
Are there any tricks to getting eclipse more responsive on macosx?
My suggestions:
Try messing with your eclipse.ini file to optimise things (located in your Eclipse installation directory). Mine looks like this:
Note: this is from a Windows version, and won't work for the Mac
-vm
c:/Program Files (x86)/Java/jdk1.7.0/bin
-startup
plugins/org.eclipse.equinox.launcher_1.1.0.v20100118.jar
--launcher.library
plugins/org.eclipse.equinox.launcher.win32.win32.x86_1.1.0.v20100118
-showsplash
org.eclipse.platform
--launcher.XXMaxPermSize
256m
-vm
c:/Program Files (x86)/Java/jdk1.7.0/bin
-vmargs
-Dosgi.requiredJavaVersion=1.7
-Xmn100m
-Xms512m
-Xmx700m
-Xss4m
-XX:PermSize=400M
-XX:MaxPermSize=500M
-XX:CompileThreshold=10
-XX:MaxGCPauseMillis=10
-XX:MaxHeapFreeRatio=70
-XX:+UnlockExperimentalVMOptions
-XX:+UseParallelGC
-XX:+UseFastAccessorMethods
-XX:+AggressiveOpts
But the important lines are:
-Xmn100m
-Xms512m
-Xmx700m
-Xss4m
-XX:PermSize=400M
-XX:MaxPermSize=500M
as these mess with the heap size, stack size, max memory that can be used by Eclipse, and so forth.
You'll need to retain some element of your eclipse.ini, just copy the bits you need into your own.
Yes, you should move to Eclipse 3.5 with 64-bit Cocoa and all the other INI suggestions are valid.
There are two additions to the JVM switches which are especially important when running in 64 bit on Snow Leopard:
For more details, see my full post on installing Eclipse 3.5 on OS X.
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