On Sunday, May 13, 2007, dragoran dragoran wrote: > On 5/13/07, Dominik 'Rathann' Mierzejewski <dominik@xxxxxxxxxxxxxx> wrote: > > On Sunday, 13 May 2007 at 00:12, 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 ;). > > > > > > As part of my job at Intel I've now released a user friendly tool > > > that allows everyone that uses it to see what the biggest problems > > > on their own laptop are... The results internally to Intel have been > > > really good; several people gained an hour of battery just by using > > > the tool and getting rid of (or fixing) 'broken' applications. > > > > > > PowerTOP can be downloaded from http://www.linuxpowertop.org > > > > > > > > > for completeness I've attached the full announcement text I used in > > > other places below. I hope that enough people will use it and report > > > / fix issues in software so that the whole Linux experience on > > > laptops will be a lot better in a few months.. > > > > Hey, this is pretty cool. > > > > Here's what it says on my amd64 desktop: > > > > No detailed statistics available; please enable the CONFIG_TIMER_STATS > > kernel option > > > > Suggestion: Enable the CONFIG_USB_SUSPEND kernel configuration option. > > This option will automatically disable UHCI USB when not in use, and > > may save approximately 1 Watt of power. > > same here using a core 2 duo t7400 on fc6 x86_64 You need to use a tickless kernel (CONFIG_NO_HZ iirc) and one with CONFIG_TIMER_STATS enable for the tool to work. I think recent rawhide kernels fit the bill... Jesse -- fedora-devel-list mailing list fedora-devel-list@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/fedora-devel-list
