Red Hat Bugzilla – Bug 508307
glxgears cpu-scaling error
Last modified: 2009-06-26 14:44:23 EDT
Description of problem:
The calculation of fps seems to be wrong.
1524 frames in 5.0 seconds = 304.720 FPS
2036 frames in 5.0 seconds = 407.042 FPS
1998 frames in 5.0 seconds = 399.522 FPS
2001 frames in 5.0 seconds = 400.032 FPS
1794 frames in 5.0 seconds = 358.654 FPS
1676 frames in 5.0 seconds = 334.839 FPS
172 frames in 5.0 seconds = 34.211 FPS
112 frames in 5.0 seconds = 22.390 FPS
112 frames in 5.0 seconds = 22.277 FPS
112 frames in 5.0 seconds = 22.255 FPS
112 frames in 5.1 seconds = 22.105 FPS
112 frames in 5.0 seconds = 22.273 FPS
111 frames in 5.0 seconds = 22.154 FPS
Scaling = Ondemand:
First 6 with CPU Scaling at 800MHz, then CPU shift to 2000MHz
Version-Release number of selected component (if applicable):
X.Org X Server 1.5.3
( no xorg.conf - radeon x1200 )
Steps to Reproduce:
1. run it
- see output above
- increased fps as higher output
- in some web pages, the browser slow down to a "crawling" speed, almost halting. If more processing power is needed, it doesn't get it.
Attempted to figure out if some feedback exist.
Where does it collect the info for calculation ?
Updated 58 packages, new kernel, etc.
Tried the same thing, but cannot duplicate these numbers. Tried the old kernel,
with the same load. But nope, this does not make sense. Scaling *must* have gone down instead of up. And below 800.
glxgears is not to blame. Not a bug.