On 06.26, J.A. Magallon wrote: > Hi all... > > Just a comment about a weird thing I have noticed wrt scheduling in latest > kernels. > > My last two tests are 2.6.7-mm2 and 2.6.7-mm2+staircase-7.4 (plus a couple > other things, like aic updated driver). I use GLMatrix as screensaver, > running with nVidia drivers (yup, tainted kernels, but both are tainted ;)). > What I have noticed: > - With standard -mm, as GLMatrix runs, the framerate drops even to something > like a frame every couple seconds > - With staircase, it keeps running smoothly at 25fps. > > Something is strange in -mm. It keeps stoling cycles to the screensaver. > Is this expected ? > Sorry for the noise, it also happens with -staircase. Lets remake the question. I start /usr/lib/xscreensaver/glmatrix -fps, and the frame rate starts at 25 fps. In 30 seconds it has dropped to 6 fps. The app is still using the same cpu time (about 90% of one cpu on a dual xeon box with ht). Any ideas ? -- J.A. Magallon \ Software is like sex: werewolf!able!es \ It's better when it's free Mandrakelinux release 10.1 (Cooker) for i586 Linux 2.6.7-jam5 (gcc 3.4.1 (Mandrakelinux (Cooker) 3.4.1-0.3mdk)) #1