[Pm-utils] powertop suggestions
Richard Hughes
hughsient at gmail.com
Wed Jun 27 13:50:21 PDT 2007
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.
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