Re: [gentoo-user] Is cpufrequtils needed these days?

Re: [gentoo-user] Is cpufrequtils needed these days?

[Volker Armin Hemmann]

On Sonntag 28 Februar 2010, Mick wrote:
> As I am working my way through this new box I am not sure if cpufrequtils
> is necessary for the kernel to manage the CPU.  Is this still necessary,
no. I have never needed it.

> or is the kernel itself clever enough to manage the hardware directly
> these days?

yes, it is. Just use the ondemand governor.

Re: [gentoo-user] Is cpufrequtils needed these days?

[Mick]

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On Sunday 28 February 2010 18:52:02 Volker Armin Hemmann wrote:
> On Sonntag 28 Februar 2010, Mick wrote:
> > As I am working my way through this new box I am not sure if cpufrequtils
> > is necessary for the kernel to manage the CPU.  Is this still necessary,
> 
> no. I have never needed it.
> 
> > or is the kernel itself clever enough to manage the hardware directly
> > these days?
> 
> yes, it is. Just use the ondemand governor.

Kewl, thanks - I already am.  :-)

-- 
Regards,
Mick

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[gentoo-user] OT: governors (was: Is cpufrequtils needed these days?)

[Nicolas Sebrecht]

On Sun, Feb 28, 2010 at 07:52:02PM +0100, Volker Armin Hemmann wrote:
> 
> On Sonntag 28 Februar 2010, Mick wrote:
> 
> > or is the kernel itself clever enough to manage the hardware directly
> > these days?
> 
> yes, it is. Just use the ondemand governor.

I've noticed what looks like some work overloads using the ondemand
governor. I'm pretty sure it is normal but I can see (user feeling) when
the system loads the processor by intermittence. It is visible on some
compilations tasks and when playing flash videos and compared to the
performance governor. I'm still runing a 2.6.26 kernel.

Just a user back report.

-- 
Nicolas Sebrecht

Re: [gentoo-user] OT: governors (was: Is cpufrequtils needed these days?)

[Volker Armin Hemmann]

On Freitag 02 Juli 2010, Nicolas Sebrecht wrote:
> On Sun, Feb 28, 2010 at 07:52:02PM +0100, Volker Armin Hemmann wrote:
> > On Sonntag 28 Februar 2010, Mick wrote:
> > > or is the kernel itself clever enough to manage the hardware directly
> > > these days?
> > 
> > yes, it is. Just use the ondemand governor.
> 
> I've noticed what looks like some work overloads using the ondemand
> governor. I'm pretty sure it is normal but I can see (user feeling) when
> the system loads the processor by intermittence. It is visible on some
> compilations tasks and when playing flash videos and compared to the
> performance governor. I'm still runing a 2.6.26 kernel.

of course there is a little difference. Performance is not a governor. It just 
sets the cpu at always full speed. So it does not have any ramp up time - but 
also blows away a lot of energy AND generates unnecessary heat.