100% CPU history in Jaunty

[scott]

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Craig Hagerman wrote:
> 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
> 
By chance, are you just closing the terminal when using top? Not killing
top with the "q" command?

Try atop as sudo. It is better at showing processes that drop out after
a 'top' command is shown. Many options that top doesn't have.

Just man atop.

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