Slowness in Eclipse Juno (4.2)

Question

I've had some issues with slowness switching tabs in Eclipse 4.2 Juno and was hoping someone might have some answers. The original delay was about 10 seconds which dropped to 2-4 once I specified the java vm in the eclipse.ini file, but that's still slower than I think it should be. I've uninstalled all the addons that I thought might be offending and listed the active ones below and I believe the system to be more than adequate, but listed the specs anyway. Thanks for any help you could give me.

System:
Windows 7x64
1.73 Ghz i7
8 GB RAM

Eclipse Addons:
Eclipse Color Themes
PHP Development Tools (PDT)

Eclipse.ini:

-vm  
C:\Program Files\Java\jre7\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  
-showsplash  
org.eclipse.platform  
--launcher.XXMaxPermSize  
512m  
--launcher.defaultAction  
openFile  
-vmargs  
-server  
-Dosgi.requiredJavaVersion=1.7  
-Xmn256m  
-Xms4196m  
-Xmx4196m  
-Xss4m  
-XX:PermSize=256m  
-XX:MaxPermSize=256m  
-XX:+UseParallelGC  

Solution 1

There are some known issues with UI performance in Juno. See the lengthy discussion at https://bugs.eclipse.org/bugs/show_bug.cgi?id=385272

The Juno Service Release 2 (SR2) has been released and it addresses many of the UI performance problems.

Solution 2

You can install the Eclipse UI Juno SR1 Optimizations patch by following the instructions on this link, provided you are using Eclipse Juno SR1 release and are facing this slowness problem: http://wiki.eclipse.org/Platform_UI/Juno_Performance_Investigation

Since the content on the above link has been updated, it does not provide the patch download part anymore. So for anyone else looking for the download details, all you need to do is install the Juno SR1 Patches--Eclipse UI Juno SR1 Optimization from the update site: http://download.eclipse.org/eclipse/updates/4.2 -using the process of Help menu -> Install New Software

Solution 3

Change the java memory heap size. Look at the -XX:PermSize=256m -XX:MaxPermSize=256m and change like for 1024m. There you go a link: http://www.jguru.com/faq/view.jsp?EID=424214

Solution 4

Try to change the theme to Classic.

Solution 5

• disable unneeded validations (Window -> Preferences -> Validations).
• limit the number of visible validations (Problems View -> Configure Content)
• increase memory for eclipse in eclipse.ini as you did
• enable virtual memory mapping for git
• use the classic theme

all together gave my Juno a big speed boost :)

View more solutions

Comments

[Majid Laissi]

Try cleaning up your temp folder using Disk cleanup utility. stackoverflow.com/questions/12333891/…

[Karen Butzke]

see also: stackoverflow.com/questions/11446825/…

[didxga]

This is a known issue for Juno, but installing a optimization path will definitely mitigate it. see: bugs.eclipse.org/bugs/show_bug.cgi?id=385272#c212

[seninp]

Yeah. Same issue here - the simple XML for MyBatis was hanging eclipse for minutes - I rolled back to Helios... But had some troubles synchronizing my projects with repositories. Consider that.

[seagoj]

Changing this cut the startup load time by about 1/3, so I thank you, but the tab switching seems to still be as slow as before. Maybe it is just the issue with Juno.

[leech]

I've been plagued with performance issues since 4.2, but since installing this, it is snappy and speedy.

[stivlo]

That change improved my Linux Eclipse Juno speed a lot!

[seagoj]

I've since just started using Vim instead. :)

[Philipp Claßen]

@seagoj I shortly messed around with Emacs but it's no fun when you have to work with Java. In the end, I switched to IDEA. Eclipse 4.3 is not bad, though, maybe you can give it a second try. But if you don't have to use Java, stick with Vim. ;-)