write metadata to file - speed
there are 129 photos in the catalog; 66 DNG, 51 JPG, 2 TIF. The catalog in on the local disk.
I add a new keyword "test" to all of them. Now I measured the time to write the changed metadata to the photos.
Daminion: 2 Minutes 55 seconds
Lightroom 4 (64bit): 20 seconds