Very slow Eclipse 4.2, how to make it more responsive?

Question

I use Eclipse PDT in a fairly large PHP project and the IDE is almost unusable. It takes about 30 seconds to open the file, and other actions, such as selecting a folder in the file explorer, editing text, etc., are equally slow.

I followed various instructions to speed it up, but nothing works. This is the current current eclipse.ini file. Any idea how I can improve it?

 -startup plugins/org.eclipse.equinox.launcher_1.3.0.v20120522-1813.jar --launcher.library plugins/org.eclipse.equinox.launcher.win32.win32.x86_1.1.200.v20120522-1813 -showsplash org.eclipse.platform --launcher.XXMaxPermSize 256m --launcher.defaultAction openFile -vmargs -server -Dosgi.requiredJavaVersion=1.7 -Xmn128m -Xms1024m -Xmx1024m -Xss2m -XX:PermSize=128m -XX:MaxPermSize=128m -XX:+UseParallelGC 

System: Eclipse 4.2.0, Windows 7, RAM 4 GB

Answer 1

Actually, looking at the configuration of your computer, you need to make sure that nothing is happening in the machine, and experiment with reducing the required memory, say something like -Xmx512m. If you ask for too much heap space, then it is possible that you are doing a lot of OS search call.

Answer 2

It seems that in silence, Eclipse created the patch and announced it in all secrets through its wiki (!). This seems to ease the problems for me, at least; although I have not tested it in length yet.

See http://wiki.eclipse.org/Platform_UI/Juno_Performance_Investigation

Basically you should install "Juno SR1 Patches / Eclipse UI Juno SR1 Optimization" from your 4.2 update site: http://download.eclipse.org/eclipse/updates/4.2

Error tracking for this optimization: https://bugs.eclipse.org/bugs/show_bug.cgi?id=394588

Answer 3

There are known performance issues with PDT 3.1 and eclipse 4.2 (juno).

https://bugs.eclipse.org/bugs/show_bug.cgi?id=385272

This solution:

Open a different perspective (e.g. java but not php) and restart eclipse. Subsequently, you can return to the php perspective. Eclipse will not have performance issues.

Also mentioned here

Answer 4

There is also a known bug that slows down eclipse juno on some systems:

https://bugs.eclipse.org/bugs/show_bug.cgi?id=385272

The workaround is to delete the workbench.xmi file.

Answer 5

From http://wiki.eclipse.org/Platform_UI/Juno_Performance_Investigation

• Make sure you are already using the package from the Juno SR1 release (September 2012)
• Get Help> Install New Software
• Select this repository: http://download.eclipse.org/eclipse/updates/4.2
• Expand Juno SR1 Patches and install Eclipse UI Juno SR1 Optimizations

Worked for me

Answer 6

I had similar problems running Eclipse and the ARM emulator. When I switched from tab to Eclipse tab, it would take 5 seconds to switch it, and Eclipse would be in “Not Responsive” mode for a moment. I really increased my heap memory on my eclipse.ini with -Xmx1024m. This fixed the problem.

Answer 7

I had very big user interface performance issues when switching to 4.2 (using PDT), and after studying for a while I noticed that this was due to ... the PHP perspective. It makes no sense, but I can confirm it on two different computers.

Try switching to another (for example, one resource), then restart Eclipse (the last part is important).

Let me know if this helped.

Answer 8

I had huge performance issues (switching between editor windows was SLOW). I modified the eclipse.ini file to use -Xmx1024m rather than -Xmx512m, and the performance is much better.

Update. After some time, I began to notice that the correction above did not lead to the fact that my problems completely disappeared. I found another useful article. I install the Spring Source Toolsuite plugin, and I believe that this can be a source of slowness. After installing the patch from the following link, Eclipse works much more smoothly: http://wiki.eclipse.org/Platform_UI/Juno_Performance_Investigation

Answer 9

Eclipse 4.2 Service Release 2 was released a few days ago (March 1, 2013. This is the result of all these studies and previously proposed corrections. Give it a chance!

Answer 10

Make sure you turn off "show whitespace" on Linux. ( https://bugs.eclipse.org/bugs/show_bug.cgi?id=320595 )

Answer 11

I am using Eclipse version 4.2.2 to develop Android applications. But it is slow when coding my applications. (not an XML graphic layout or Android emulator)

I also use NetBeans, but it works very well!

In particular, I want to report here. I have added many more plugins to Eclipse and now I have uninstalled it all. Now there is only an ADT plugin with Eclipse Base plugins.

I saw some of the best settings to speed up the eclipse user interface.

I want to know what are the best settings for my laptop.

Windows 8.1, 12 GB Ram.

Finally sorry to post here, I cannot answer any questions because I am blocked.

I hope the best solution is here.