[LAT] Tickless kernel and realtime

[Emanuel Rumpf]

Hi Maurizio

2008/9/12 Maurizio De Cecco <jmax at dececco.name>:
> I am running Ubuntu studio 64 on a Thinkpad laptop (X61s), and
> i get an horrible battery life.
>
I don't know the Ubuntu Kernel, but they might have disabled acpi,
cpu-freq-scaling, at either boot time or in the kernel.

> Powertop suggest to configure the
> kernel with CONFIG_NO_HZ=y.
>
I have CONFIG_NO_HZ=n
and CONFIG_HZ=1000
- works well here. (linux 2.6.25)


>
> And in case, where i find the ubuntu studio kernel source ?
>
In the ubuntu source repository ?
May be enabled in /etc/apt/sources.list

Sincerely
Emanuel