On 01/07/2010 10:12 AM, Adrian Sevcenco wrote:
Jim Perrin wrote:
On Wed, Jan 6, 2010 at 5:15 PM, Adrian SevcencoAdrian.Sevcenco@cern.ch wrote:
Hi! I try to compile an vanilla kernel 2.6.32.2 on centos 5.4 and i have this error :
Out of curiosity, why are you rebuilding the kernel? Is there a driver you need which isn't supplied by the elrepo repository folks?
Well, the thing is that i lack power scaling (i understood that the module should have name something like overhaul .. or something) Given that this is an samba home server with very little load is a pity that it stays all the time at maximum freq.. elrepo guys are fantastic and from them i have the vt1211 driver for the sensors .. but i dint see that they would have also scaling drivers in their repo. Thanks, Adrian
Depends what hardware you have. ELRepo has a fixed powernow-k8 driver for AMD processors that allows correct scaling on multicore processors. See here:
http://blog.toracat.org/2009/08/go-green-with-newer-amd-processors/ http://elrepo.org/tiki/kmod-powernow-k8
Other than that, generally I've found most scaling issues to be hardware/bios related, rather than an issue within CentOS itself so I'd suggest checking you have the latest bios for your motherboard and that all power saving options within the bios are correctly set.
Hope that helps.