On Tue, Feb 17, 2009 at 07:28:11AM -0800, Brian Swetland wrote: > [Arjan van de Ven <arjan@xxxxxxxxxxxxx>] > > On Tue, 17 Feb 2009 06:20:01 -0800 > > Brian Swetland <swetland@xxxxxxxxxx> wrote: > > > > > Of course that still doesn't address userspace. Aggressively going to > > > suspend lets us compensate for userspace programs that do somewhat > > > silly things (I agree that it would be best if they didn't but they > > > do and getting *everyone* to write their userspace code to avoid > > > spinning or avoid waking up on short-duration timers to poll is a > > > losing battle). > > > > actually with powertop... on the open source side things are actually > > won. It took all of 6 months... > > I don't see that as a valid excuse. In fact, if this kind of solution > > makes real userspace scheduled timers to be missed then I consider it a > > serious functionality misfeature. > > While you can't expect the kernel to solve all the problems of > userspace, here's the broad situation one could end up in > (note this specific sequence is generic and not based on any one > specific product experience): > > - carrier deploys a device > - carrier agrees to allow installation of arbitrary third party apps > without some horrible certification program requiring app authors > to jump through hoops, wait ages for approval, etc > - users rejoice and install all kinds of apps > - some apps are poorly written and impact battery life > - users complain to carrier about battery life Carrier pushes ISV for fix app, and updates that don't suck are deployed. Where is the problem? --mgross > > You will end up with some crappy apps that do really dumb things. > However, even if they're badly written users may still install and use > these apps because hey, they do something the user likes. > > >From the Android standpoint, we're trying to balance protecting the > system from poorly designed apps and somehow letting the user know "hey > app X is chewing up a lot of power" (work in progress on this). > > While I'd love for every app developer to actively tune their apps for a > good mobile experience, I am skeptical that this is going to happen. > > Brian _______________________________________________ linux-pm mailing list linux-pm@xxxxxxxxxxxxxxxxxxxxxxxxxx https://lists.linux-foundation.org/mailman/listinfo/linux-pm
