设置优化：
- General > Startup and Shutdown : remove all plugins activated on startup
- General > Editors > Text Editors > Spelling : Disable spell checking
- General > Validation > Suspend all
- Window > Customize Perspective > Remove stuff you don’t use or want (shortcut keys are your friends), same for Menu Visibility (how many times have you printed a source file…)
- Install/Update > Automatic Updates > Uncheck “Automatically find new updates”
- General > Appearance > Uncheck Enable Animations
- Stay with the default theme. Unfortunately, anything else makes it really laggy and slow.
- Java > Editor > Content Assist > disable Enable Auto Activation. Advanced > Remove all unwanted kinds
修改eclipse.ini文件：
-Xms256m
-Xmx1024m尝试不同的组合，找到最适合你的。
其他优化选项：