Xcode is unbearably slow (and lies). Why?

My Xcode compiles are taking longer and longer.

Each time I compile it cla开发者_运维百科ims it's compiling one file in the Activity window even though I would not have editede it and it has no dependence on the files I'm editing. In the Build window it claims it's compiling another file (the right one).

I have tried cleaning, precompiled headers are in place etc..

This is Xcode 3.2.2

Why is this happening?

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Which hard disk is your project on? Could it be a slow drive and/or a full disk kind of issue? I presume its not a networked drive...

What does the Activity Monitor show - is the machine 100% busy CPU-wise or not?

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I had a similar problem and I tracked it down to a choppy/really slow Internet connection. Disabling the internet connection by shutting off the wi-fi would make the compiling fast again. The final solution was to stop using my neighbour's wifi and get my own (<- Joke ... not really ... jaja :/)

I'm not sure what is XCode doing over the Internet connection, but with a poor connection some sort of timeout seemed make the building process VERY slow.

This may not be your problem but it is easy enough to test. Cheers!

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Quite often, problems like this can be fixed by going into your application directory and deleting the BUILD directory. X-Code automatically generates this directory upon compile anyway so you won't lose any data, it just cleans things up a little and MAY allow you to compile quicker in the future.

Source: Alan Cannistraro, Stanford University on one of his iPhone Developement Class Podcasts

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Try and update XCode? (do not read the following : answer needs 30 characters, so I fill my answer with this sentence)