Xcode 4 – slow performance

If you purge the workspace file it helps speed it up.

First, make sure Xcode isn’t open. Now find your project file. Right-click on it, and select Show Package Contents.

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Next, delete project.xcworkspace.

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Open Xcode and enjoy faster performance!

Thanks to:
http://meachware.blogspot.com/2011/06/speed-up-xcode-4.html


Edit: I’ve gotten several comments about this noting that for some projects this might cause problems. Make sure you have a backup of your project before performing these steps, and don’t forget to check and test your project afterwards. Be sure you still have all of your executables and schemes.

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