Why Eclipse is too slow on startup?

 

I am using windows 7 home premium with service pack 1 installed. I had installed JDK 1.7u21. Then I downloaded Eclipse Juno (Before that I was using Eclipse Indigo with JDK 1.6u26) and when I started it, I found out that it is taking too much time to start. It is pausing on the splash screen for more than 10 minutes, and then only asks for the workspace selection.

Then I removed Juno and installed Indigo again, also uninstalled JDK 1.7 and installed JDK 1.6u45, but now also the problem persists. When I searched, I have found that deleting files in the workspace/.metadata/.plugins/org.eclipse.core.resources will fix he problem. I have done that also, but no use.

The below given is my 'eclipse.ini' 

-startup
plugins/org.eclipse.equinox.launcher_1.2.0.v20110502.jar
--launcher.library
plugins/org.eclipse.equinox.launcher.win32.win32.x86_1.1.100.v20110502
-product
org.eclipse.epp.package.jee.product
--launcher.defaultAction
openFile
--launcher.XXMaxPermSize
256M
-showsplash
org.eclipse.platform
--launcher.XXMaxPermSize
256m
--launcher.defaultAction
openFile
-vmargs
-Dosgi.requiredJavaVersion=1.5
-Xms40m
-Xmx512m

Basically, there might be too many plugins at startup which might be creating this mess. You must disable these startup plugins

Take a look at the previous post Temporarily disable Eclipse plugin

Another very good guide to speed up eclipse is given as under. http://www.beyondlinux.com/2011/06/25/speed-up-your-eclipse-as-a-super-fast-ide/

A previous StackOverflow post also talks of speeding up eclipse How can you speed up Eclipse?

You can also see the list of plugins that are loaded at startup at 在这里输入图像描述

You don't give much to go on, so I'll give a few things to try to collect additional information:

  • Use JVisualVm to monitor the process and look at the threads. You can find this in the JDK bin folder. Once started, the Eclipse should appear in the left pane under 'Local', Double-click it to open then go the the threads tab and try to correlate it's behavior (running/hanging/sleeping) with particular thread activity. You might also try a 'thread dump' and see what objects threads are hanging on.

  • Use Process Monitor to trace all file, registry, and network activity during Eclipse start up try to correlate this with the behavior you see. You might also try disabling your network device(s) to see if this affects it--perhaps it is hanging while trying to contact maven or update sites.

  • Check the Eclipse log file in .metatdata/.log in your workspace directory for (error) messages. This is the easiest thing to do, so look here first.

    • These are all general "information gathering" steps which may help you to ask more specific questions. Googling "why does eclipse hang during startup minutes" shows this is not uncommon, and there are few different causes/solutions.

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