The ondemand cpu speed governor - some help please

[Chris Clayton]

On Wednesday 20 June 2007, Dave Jones wrote:
> On Wed, Jun 20, 2007 at 12:57:44PM +0000, Chris Clayton wrote:
>  > On Tuesday 19 June 2007, Dave Jones wrote:
>  > > speedstep-smi isn't a governor it's the mechanism that allows speed
>  >
>  > PBKAC thinko ;)
>  >
>  > > changes to occur.  Unfortunatly it has a really high latency when it
>  > > does frequency changes. So high in fact, that using ondemand with
>  > > it can introduce a really large performance hit, so it's explicitly
>  > > prevented from being enabled.
>  > > (There's probably a message in dmesg telling you this when you try).
>  >
>  > Yes, there is. However, it seems that none of the cpu freq drivers are
>  > suitable for my laptop. Never mind, I use it plugged into the mains most
>  > of the time anyway.
>
> use 'userspace' and a governor app like cpuspeed.

Yep, those along with the speedstep-smi driver gives me a working solution.

Thanks to everyone.

Chris
>
> 	Dave