[Pm-utils] Basic powersave hooks
victor.lowther at gmail.com
Sat Jun 28 07:28:50 PDT 2008
On Sat, 2008-06-28 at 09:43 +0100, Richard Hughes wrote:
> DON'T DO THIS:
> Spinning down the drive like this is a _very_ quick way to kill a
> desktop or server. Laptop drivers are (sometimes) designed for this, but
> spinning down a server disk a few times per hour kills it after a few
> months. There are must better heuristics to spin down a drive, and
> ac/battery is not one of them.
Hmmm... these settings have worked well for me over the years. What are
these better heuristics?
> Using your hook would kill even a laptop
> drive very quickly -- as Linux userspace has not yet been fixed not to
> spin the disk up frequently it can easily hit the 5000-50000
> spinup/spindown cycles in a year or so.
> The other hooks look pretty sane on initial inspection, so the branch is
> a step in the right direction. It's just the spindown hook I'm violently
> opposed to.
OK, do we have a better method of reducing hard drive power consumption
when running on battery?
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