[Pm-utils] powertop suggestions

[Richard Hughes]

On Wed, 2007-06-27 at 13:37 -0700, Arjan van de Ven wrote:
> Richard Hughes wrote:
> > When using powertop I'm told to do:
> > 
> > echo 1500 > /proc/sys/vm/dirty_writeback_centisecs
> 
> that is mostly because fedora sets it to 30 (300ms) on AC (which is 
> insanely short)

What are the ideal values for this on AC and battery?

> > echo 5 > /proc/sys/vm/laptop_mode
> 
> this probably just wants to be done always, regardless of AC/battery

Can this default just be changed in the kernel?

> > mount -o remount,noatime /
> 
> noatime has some sideeffects; there are various forms of "less atime" 
> that are more benign

Any ideas on how to enable less-atime? :-)

Thanks,

Richard.