PowerTOP tool released; time to fix the wasted laptop power on fedora?

Arjan van de Ven arjan at fenrus.demon.nl
Sun May 13 17:06:05 UTC 2007

On Sun, 2007-05-13 at 23:52 +1000, David Timms wrote:
> Arjan van de Ven wrote:
> > Hi,
> > 
> > some of you already know that I've been working on getting Linux (and
> > Fedora) to be a lot better about power usage on laptops by avoiding
> > spurious wakeups and context switches and such (look at the "wakeup" bug
> > in fedora bugzilla ;).
> ...
> Would this tool help one in tracing the cause of disk accesses in an 
> otherwise inactive/idle notebook. It seems to be about every 3 seconds 
> or so that the hard disk LED lights. This must make it impossible for 
> the hard drive to get powered down - and save power.

I've gotten this request a few times now; I'll be looking into this for
version 2.0; I'd think it would be possible with blktrace but I need to
look into the details (don't want this tracing to spoil any other
measurements ;)

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