100% CPU history in Jaunty

[Craig Hagerman]

On Tue, May 19, 2009 at 10:56 PM, Ashley Benton <chuaukantli at gmail.com> wrote:
> Firefox seems to do that to my computer sometimes. I still didn't find the
> reason, and just open it in another computer with ubuntu 7.10 which solve my
> problem. Can it be related? Is firefox open when that happens?
>

Nope. As I said I checked the usage in various programs. None of the
running apps are using up the CPU. Firefox uses some of the CPU, but
none of the programs add up to 100% of CPU.

What I now think is going on is that the powernow CPU scaling is not
working as it should. It DOES work. I can manually set the CPU from a
gnome applet in the task bar. But the ondemand setting does NOT scale
the CPU. Therefore, I think that what is happening is that powernow or
some related part of CPU scaling was broken in the upgrade, so that
now the CPU is running at full speed regardless of the load. Not sure
why this is, but thanks for the response. I will investigate further

Craig