Actually the clockscaling is on. I am using ondemand governor.
glxgears @800mhz: ~24% cpu usage
Code:
$ glxgears
2497 frames in 5.0 seconds = 499.386 FPS
2640 frames in 5.0 seconds = 527.863 FPS
2600 frames in 5.0 seconds = 519.892 FPS
2623 frames in 5.0 seconds = 524.598 FPS
glxgears @2gig: ~15% cpu usage
Code:
$ glxgears
3422 frames in 5.0 seconds = 684.355 FPS
3599 frames in 5.0 seconds = 719.718 FPS
3616 frames in 5.0 seconds = 723.072 FPS
3601 frames in 5.0 seconds = 720.198 FPS
btw, i have stopped building from git, instead i'm using xorg-edgers ppa on hardy amd64. The only difference with hand built git i see is lower mem usage.