On 09/03/2012 09:42 AM, ext Samuel Rødal wrote: > On 08/31/2012 02:05 AM, ext David Boosalis wrote: >> I download the latest beta version of Qt 5.0 onto my Linux box (Kubuntu >> 12.04) . For a beta it looks real good, but one thing I found >> concerning was the performance. I mean even running the demo "samegame" >> take over 98% of my cpu. Being that it is only the first beta release I >> am sure there is plenty of room for optimization, but 98% of my >> I5-2500 cpu seems a little excessive. I did the default configure and >> build so maybe it was built without any optimization. Any thoughts on >> this ? > > I only see it hovering at around 7 % CPU on Ubuntu 12.04 with Intel HD > Graphics 3000. It could as someone else mentioned be caused by a lack of > vsync enabled in the graphics driver control panel, or in the desktop > effects control panel on KDE. A lack of vsync might cause rendering to > happen at a rate of many hundred fps, way above what's necessary.
Alternatively, your OpenGL driver ends up using a software fallback. Could you provide the output of running "glxinfo" on your machine? -- Samuel _______________________________________________ Development mailing list [email protected] http://lists.qt-project.org/mailman/listinfo/development
