Andrew Straw wrote:
Hi all,
I haven't done any serious testing in the past couple years, but for this particular task -- drawing frames using OpenGL without ever skipping a video update -- it is my impression that as of a few Ubuntu releases ago (Edgy?) Windows still beat linux.
The problem is that this is the kind of things which is really distribution (because of kernel patch) dependent.
Just now, I have investigated on 2.6.22-14-generic x86_64 as pacakged by Ubuntu 7.10, and I didn't skip a frame out of 1500 at 60 Hz. That's not much testing, but it is certainly better performance than I've seen in the recent past, so I'll certainly be doing some more testing soon. Oh, how I'd love to never be forced to use Windows again.
You should try the rt kernel: https://wiki.ubuntu.com/RealTime/Gutsy. This does make a huge difference. cheers, David