[CMake] FYI - From Ninja-build mailing list - Fwd: Proposal: restat rules

Peter Kümmel syntheticpp at gmx.net
Thu Oct 6 16:05:09 EDT 2011


On 06.10.2011 21:14, Peter Kümmel wrote:
>>
>> OK, so I think this project is way too small for this test.  There is
>> some fixed overhead in the process here, and we are seeing it.  We are
>> talking about .5 seconds difference to check a whole build system.  If
>> you want to do tests like this, you need a much bigger project.  I am
>> sure that CMake will not be 50% slower for a larger project where we are
>> not comparing .5 seconds to 1.1 seconds or .1 seconds.
>>
>
> I don't know a bigger project which supports qmake and cmake,

Another idea is to down-cock the system: My  system runs in a VirtualBox,
and I simply don't allow 100% CPU usage:

KST:
      qmake   cmake   ninja
-j1   14s     45s     3s
-j2   14s     27s     3s


VTK:

      qmake   cmake   ninja
-j1           130s    8s
-j4           30s     8s

Peter


More information about the CMake mailing list