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。

我已经禁用了Windows > Preferences > General中所有未使用的选项，它对性能有巨大的积极影响，eclipse在切换选项卡时仍然很慢，我不想增加内存，但在滚动时要快得多。谢谢你的提示。

当限制打开标签的数量时(过去我经常打开30多个标签)，我的性能有了相当大的提高。您可以让Eclipse自动为您处理这个问题:

窗口->首选项->编辑器->自动关闭编辑器

8个打开的标签是>>符号出现之前的金额，所以我倾向于让它保持在8。

当打开更多选项卡时，最近最少访问的选项卡将被关闭。

->当所有编辑器都是脏的或固定的

如果它有未保存的修改，你可以提示保存和重用(标签将被关闭，一个新的将被打开在它的地方)。或者你可以打开一个新的编辑器，从而增加打开标签的数量(不显眼的选择)。

如果你想确保一些标签永远不会自动关闭，你可以钉住它们。点击大头针图标(工具栏中最右边的图标，以“大头针编辑器”为tooltiptext)。

                       **Tips for making Eclipse IDE Faster**

Eclipse在处理小型项目时运行得更快。但是当你不得不处理一个大项目时，你会对它的速度感到恼火。即使有一个巨大的RAM，你也不会满意它 速度。以下步骤将帮助eclipse提高其速度

Remove unwanted activation of some of the plugins at start-up by going to windows–>preference–>General–>Startup and shutdown also make sure you don’t use those plugins in any of your views Disabling label decorations which is of less use for you, will also help you to gain some performance . Go to Windows–>Preference–>General–>Appearance–>Label -> Decorations Close unwanted projects and use working set option to move from one group of project to another smoothly. Configure eclipse.ini which will be available in the eclipse installed location.

   Configuring eclipse.ini should be based on your RAM
   -Xms256m
   -Xmx512m
   -XX:PermSize=512m
   -XX:MaxPermSize=512M

也可以访问http://wiki.eclipse.org/Eclipse.ini获取更多选择 配置eclipse.ini。

Do not keep lot of tabs opened in the editor. Better to have around 20 tabs . Regularly close the unused tabs. To open resource we can always use ctrl+shift+R and ctrl+shift+T (java resource) instead of opening lot of tabs I experienced a considerable improvement in performance when limiting the number of open tabs (In the past I frequently had 30+ tabs open). You can let eclipse handle this for you automatically: Window->Preferences->Editors-> close editors automatically 8 open tabs is the amount before the >> sign appears, so I set 14 as my default value. When opening more tabs, the ones the least recently accessed will be closed. When all editors are dirty or pinned. If it has unsaved modifications you can prompt to save & reuse (tab will be closed, a new one will be opened in its place). Or you can open a new editor end thus increase the amount of open tabs (the unobtrusive choice). If you want to ensure some tabs never get closed autmatically, you can pin them. This by clicking on the pin icon (the rightmost icon in the toolbar, with “pin editor” as tooltiptext). Go to Windows -> Preferences -> Validation and uncheck any validators you don’t want or need. Go to Windows -> Preferences -> General -> Appearance -> and uncheck any animation you don’t want or need. Go to Windows -> Preferences -> Maven and check 'do not automatically update dependencies'.

除了最新的软件(最新的Eclipse和Java)和更多的RAM，您可能还需要

删除不需要的插件(并非所有插件都需要Mylyn和Eclipse的J2EE版本) 不必要的验证器 禁用拼写检查 关闭Java编辑器中未使用的选项卡(是的，它有助于减少Eclipse负担) 关闭未使用的项目 禁用不需要的标签声明(SVN/CVS) 禁用自动建筑

参考:making-eclipse-ide-faster

Eclipse会延迟加载插件，大多数常见的插件， 比如Subclipse，如果你不使用它们，就不要做任何事情。 它们在运行时完全不会降低Eclipse的速度，而且它 不能帮你让他们失效。事实上，Mylyn被展示过 在正确使用Eclipse时减少内存占用。

我运行Eclipse时使用了大量的插件，但没有任何性能 罚点球。

Try disabling compiler settings that you perhaps don't need (e.g. the sub-options under "parameter is never read). Which version of Eclipse are you using? Older versions were known to be slow if you upgraded them over and over again, because they got their plug-ins folder inflated with duplicate plug-ins (with different versions). This is not a problem in version 3.4. Use working-sets. They work better than closing projects, particularly if you need to switch between sets of projects all the time.

使用-Xmx不仅需要增加内存 开关，这也是烫发的大小。我认为 在Eclipse 3.4中解决了这个问题。