theres a large kernel generic scheduler speed problems though
OC its interesting that on ones mentioned that theres kernel scheduler speed problems though....
http://thread.gmane.org/gmane.linux.kernel/889654
"...
> 20 samples/soccer_4cif.y4m -o /dev/null --threads X
> BFS CFS
> 1: 124.79 fps 131.69 fps
> 2: 252.14 fps 192.14 fps
> 3: 376.55 fps 223.24 fps
> 4: 447.69 fps 242.54 fps
> 5: 447.98 fps 252.43 fps
> 6: 447.87 fps 253.56 fps
> 7: 444.79 fps 250.37 fps
> 8: 441.08 fps 251.95 fps
After a bit of testing, it turns out that NEXT_BUDDY and LB_BIAS
features are _both_ doing injury to this load. We've been looking at
NEXT_BUDDY, but LB_BIAS is a new target.
Thanks a bunch for the nice repeatable testcase!
-Mike
"
there are several fixs apparently, but its not clear if their actually in the released version today, infact it seems like it not ,as nothing mentioned online that i can find anywere....
http://patchwork.kernel.org/patch/54550/