On Sun, Aug 16, 2009 at 10:29 PM, Pavel Heimlich<tropikhajma at gmail.com> wrote: > Hi, > could be the relative slowness of KDE be caused by qt not compiled with > mmx/3dnow/sse/sse2 ? > the qt autodetection functions are tailored to gcc, so they fail with Sun > Studio. Probably something like this > http://lists.x.org/archives/xorg-devel/2009-April/000596.html patch would be > needed. > > I know we basically force sse2 to everything, but could there be something > that gets removed at the configure time? I haven't investigated into the way > qt is built though, just asking.
I understand that xrender has much more to do with kde4 performance than any sse/sse2 optimizations. It may depend on what kind of video adapter you have, and whether or not the driver supports xrender. If you have an ATI driver, I think you are going to be out of luck.
