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。

你有大的公羊吗?创建一个ramdisk，并把你的

JDK JVM Eclipse 工作空间

确保将更改保存回HDD或提交给VCS，以避免断电时数据丢失。

这个线程中的最佳实践是在ZeroTurnaround的免费Optimizer For Eclipse中实现的。

它有什么帮助?

内存分配不足 类验证开销 过多的索引和历史记录 过时或缓慢的JDK Eclipse已经过时 漫长的构建和重新部署时间

要了解更多细节，请查看RebelLabs的这篇文章。

努力配置您的构建路径。如果代码完成需要遍历整个项目文件夹，则会占用大量内存。

右键单击项目并选择首选项。 选择生成路径设置并删除项目文件夹。 然后只添加包含源代码和库代码的文件夹。

如果Eclipse运行缓慢，我遵循以下几个步骤:

Any unused plugins installed in Eclipse, should uninstall them. -- Few plugins makes a lot much weight to Eclipse. Open current working project and close the remaining project. If there is any any dependency among them, just open while running. If all are Maven projects, then with miner local change in pom files, you can make them individual projects also. If you are working on independent projects, then always work on any one project in a workspace. Don't keep multiple projects in single workspace. Change the type filters. It facilitates to specify particular packages to refer always. As per my experience, don't change memory JVM parameters. It causes a lot of unknown issues except when you have sound knowledge of JVM parameters. Un-check auto build always. Particulary, Maven project's auto build is useless. Close all the files opened, just open current working files. Use Go Into Work sets. Instead of complete workbench. Most of the components of your application you can implement and test in standalone also. Learn how to run in standalone without need of server deploy, this makes your work simple and fast. -- Recently, I worked on hibernate entities for my project, two days, I did on server. i.e. I changed in entities and again build and deployed on the server, it killing it all my time. So, then I created a simple JPA standalone application, and I completed my work very fast.

我也遇到过类似的减速，这个修复只适用于使用Eclipse的C/ c++变体的情况。对于C/ c++，你可能想要禁用索引器，它以占用CPU而闻名。它相当于VS智能感知。 要禁用CDT索引器，请进入Window->Preferences，在C/ c++选项卡下选择indexer并取消选中启用索引器。