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myeclipse 速度慢，一般通过将验证去掉就解决了。将 myeclipse 中的 验证区的全部去掉,java文件的保存操作，速度很快。可是jsp文件的操作却一直很慢。总是在building workspace,但是打开进度信息，发现在验证/webroot/js ，可明明已经在验证区将 javascript 验证去掉了，为什么还是出现这个问题？ 通过网上搜索，终于找到了解决办法。
如下：
If you go to Project > Properties > Builders, do you see a “JavaScript Validator” item in the list? Uncheck that and restart MyEclipse. Does performance now improve?
Alternatively, go to Project > Properties > MyEclipse > JavaScript > JavaScript Libraries. If this page exists in your web project, go to the Source tab, select your WebRoot folder and click Remove. Restart MyEclipse.

想看详细点的，往下看吧
问题：
I’m running myeclipse, version 7.0 on windows (4Gb RAM, P8440 dualcore processor )
When I work on a web project, and I apply some change on a text file, workspace stays idle in a rebuild for some seconds; moreover, if I change a single java file, not related with other in the workspace, I have to wait for a workspace rebuild that occurs for ten seconds at least.
I disabled all validators or capabilities that I don’t use, but with no performance improvement.
Thanks in advance.

答案：
We are currently investigating whether this problem is being caused by the JavaScript tools we introduced in 7.0.

If you go to Project > Properties > Builders, do you see a “JavaScript Validator” item in the list? Uncheck that and restart MyEclipse. Does performance now improve?
Alternatively, go to Project > Properties > MyEclipse > JavaScript > JavaScript Libraries. If this page exists in your web project, go to the Source tab, select your WebRoot folder and click Remove. Restart MyEclipse.

The dev team is hard at work figuring out the cause of this slow down, any information you can provide will help a great deal. We apologize for the inconvenience caused.

Brian
MyEclipse Support

来源：http://go2-jp.appspot.com/_?bG10aC5zdW9pdmVycC13ZWl2LTY0NDUyLXQtY2lwb3R3ZWl2LTJCQnBocE5QL3Rlbi5lZGllc3BpbGNleW0ud3d3Ly86cHR0aA==
建议使用 firefox浏览器打开。