Is the time spent rendering gone up or is it something else? Generally, I see improved rendering performance across the board. If you run the code with QSG_RENDER_TIMING=1 you get some indication of the breakdown of where time is being spent.
Performance of javascript has gone down some since Qt 5.1 as a result of the replacement of the V8 java script engine with our own V4. Work on improving performance here is still ongoing. cheers, Gunnar ________________________________________ Fra: interest-bounces+gunnar.sletta=digia....@qt-project.org [interest-bounces+gunnar.sletta=digia....@qt-project.org] på vegne av VStevenP [vstevenpa...@yahoo.com] Sendt: 6. november 2013 15:33 To: interest@qt-project.org; David V-Play Emne: Re: [Interest] Performance of Qt 5.2 much slower than Qt 5.1? A colleague and I also see one performance issue with Qt 5.2 Beta as compared to Qt 5.1. We observe a 20% jump in CPU usage with the FPS Item from the Cinematic Experience Demo. This is the component which dynamically displays the number of frames per second and has a spinning graphic. You can see it in action here: https://www.youtube.com/watch?v=wulbR2R1GpM&feature=player_embedded#at=40 We observe this large increase in CPU usage due to the FPS Item on a BeagleBoard-xM/Angstrom. If anyone has an idea why FPS Item would run far less efficiently in Qt 5.2 Beta on BB-xM, please let me know. - VStevenP _______________________________________________ Interest mailing list Interest@qt-project.org http://lists.qt-project.org/mailman/listinfo/interest _______________________________________________ Interest mailing list Interest@qt-project.org http://lists.qt-project.org/mailman/listinfo/interest
