Eclipse Indigo typing lag on OS X Lion

Question

I am working on a fairly large project and have recently bumped into the good old friend of mine from the 90\'s, typing lag. My setup is MacBook Pro 2.2 GHz i7 8GB with

Answer 1

Jivings was right about the root of the problem being in the eclipse.ini file.

I am not sure what I have actually changed in the eclipse.ini after messing around with the it, since the TimeMachine does not seem to be able to save a backup of the .ini file inside the Eclipse application package (Eclipse/Contents/MacOS/eclipse.ini).

I actually lowered the MaxPermSize and other memory values which made Eclipse run smoother. If anyone else is encountering the same problem, I suggest you try similar values and see if that works. If it doesn't, I also read that you can start eclipse once with the -clean argument, which cleans up some installation and usage history among other things. I did not do that, but it's worth a try.

The following is my current configuration, and it works pretty well:

-startup
../../../plugins/org.eclipse.equinox.launcher_1.2.0.v20110502.jar
--launcher.library
../../../plugins/org.eclipse.equinox.launcher.cocoa.macosx.x86_64_1.1.100.v20110502
-product
org.eclipse.epp.package.jee.product
--launcher.defaultAction
openFile
-showsplash
org.eclipse.platform
--launcher.XXMaxPermSize
256m
--launcher.defaultAction
openFile
-vmargs
-Dosgi.requiredJavaVersion=1.5
-XstartOnFirstThread
-Dorg.eclipse.swt.internal.carbon.smallFonts
-XX:MaxPermSize=256m
-Xms40m
-Xmx512m
-Xdock:icon=../Resources/Eclipse.icns
-XstartOnFirstThread
-Dorg.eclipse.swt.internal.carbon.smallFonts

Answer 2

Try altering the settings in your eclipse.ini file. This contain the settings for the JVM and can help reduce memory issues like this.

Example eclipse.ini:

-data
../../workspace
-showlocation
-showsplash
org.eclipse.platform
--launcher.XXMaxPermSize
384m
-startup
plugins/org.eclipse.equinox.launcher_1.0.201.R35x_v20090715.jar
--launcher.library
plugins/org.eclipse.equinox.launcher.win32.win32.x86_1.0.200.v20090519
-vm
../../../../program files/Java/jdk1.6.0_17/jre/bin/client/jvm.dll
-vmargs
-Dosgi.requiredJavaVersion=1.5
-Xms128m
-Xmx384m
-Xss4m
-XX:PermSize=128m
-XX:MaxPermSize=384m
-XX:CompileThreshold=5
-XX:MaxGCPauseMillis=10
-XX:MaxHeapFreeRatio=70
-XX:+UseConcMarkSweepGC
-XX:+CMSIncrementalMode
-XX:+CMSIncrementalPacing
-Dcom.sun.management.jmxremote
-Dorg.eclipse.equinox.p2.reconciler.dropins.directory=C:/jv/eclipse/mydropins

Detailed in this question and this question.