Re: Xcode performance issues over time
Re: Xcode performance issues over time
- Subject: Re: Xcode performance issues over time
- From: Jens Alfke <email@hidden>
- Date: Mon, 15 Feb 2010 18:29:23 -0800
On Feb 15, 2010, at 4:05 PM, Jerry Krinock wrote:
> 1. Use Xcode 3.2.1 on a project for several days, sleeping Mac at night.
> 2. Do a Search In Project. Time: 16 seconds. ...
> 6. Quit Xcode
> 7. Relaunch Xcode
> 8. Reopen sam project.
> 9. Do same search: 8 seconds.
Use a profiling tool like sample or Shark to capture what Xcode's doing during both the slow and the fast search, then compare the results. Either the stack traces will be really different, with extra stuff going on in the slow search (maybe GC); or maybe the stacks will be fairly similar but for some reason some of the leaf calls, like file I/O, will be a lot slower. In the latter case the fs_usage tool could be useful to capture all the file operations and their timing. (There's also that newfangled stuff like Instruments that those darn kids are all hep on these days.)
Whatever you find, wrap it all up in a bug report to post to Apple.
—Jens _______________________________________________
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