[CMake] major performance problems on win32 with CMake 2.6.0 B6

Bill Hoffman bill.hoffman at kitware.com
Sun Apr 6 09:15:48 EDT 2008


Philip Lowman wrote:
> Hi,
> 
> I downloaded the CMake 2.6.0 B6 release candidate for Win32 tonight to 
> test it in Windows against a project I've been primarily working on with 
> Linux/Windows CMake 2.4.8. <http://2.4.8.>
> 
> I'm noticing some extreme differences in performance (15x slower) 
> coupled with the GUI going unresponsive when configuring my build with 
> CMake 2.6.0 RC6 as compared to CMake 2.4.8. <http://2.4.8.>  I was 
> wondering if anyone had any ideas what the heck happened?
> 
> ====
> 
> Configuration:  Visual Studio Express 2005 / cmakesetup.exe from CMake 
> 2.6.0 RC6 for Win32 (http://www.cmake.org/files/v2.6/)
> svn repos: https://cigi.svn.sourceforge.net/svnroot/cigi/trunk/mpv
> 
> Source directory:  on C:\
> Build directory:  on C:\
> 
> Time to Configure:
> 0:16 seconds    CMake 2.4.8
> 4:01 seconds    CMake 2.6.0 RC6
> 
I think we have this fixed.  I found it as well.  Should be fixed in the 
next RC.  You can verify by trying the nightly release here:

http://www.cmake.org/files/vCVS/?C=M;O=D

The 20080406 should have the fix.  The problem was the fat32 fix we put 
in the visual studio project files.  We now detect if the disk is fat32 
or not, and only put the hack in if it is.

-Bill


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