转到Windows ->首选项->验证，取消选中任何你不想要或不需要的验证器。

对于Eclipse 3.7，您使用Windows ->首选项->通用->启动和关机。

增加你的内存到8 GB以上，并禁用自动构建项目。这对我很管用。

Windows用户:

If you go to Task Manager, choose the eclipse application, and click on the little arrow next to it, you will usually just see one sub-process appear below "eclipse.exe". However, in my case, if you have multiple instances of "Java Platform SE Binary", then end all of them. For some reason, I had three of these running in the background, even though I wasn't currently running any projects. Nevertheless, this will boost performance back to the way it likely was when you first installed eclipse on your computer.

如果更改后您不能再运行项目，那么尝试重新启动eclipse。

禁用病毒扫描程序，或至少将任何病毒扫描程序配置为在读访问时不扫描JAR文件。

又有一个解决方案 删除这两个文件夹中的所有文件

.metadata.plugins \ org.eclipse.core.resources.history .metadata.plugins \ org.eclipse.jdt.core

这是第一次帮助。但它仍然保持缓慢

确保使用Sun JVM运行Eclipse。

在Linux上，特别是Ubuntu上，默认安装Eclipse以使用开源的GCJ，而GCJ的性能要差得多。使用update-alternatives——config java切换到Sun JVM，可以大大提高Eclipse中的UI的快快性。