I decided to try a semi-formal experiment... I haven't had time to do multiple repetitions but I figured I'd share anyways. I'm running shr-u updated about a week ago. My process was that I rebooted my FR, ran through a set of steps, at each point timing how long it took from starting the action (clicking on the icon, eg) to when the screen was finished redrawing.
I ran through two processes I do regularly - start GPS, start up claws mail, and open my inbox, and then the second was to open the messages program. I then rebooted and did the entire process again, with the only difference being that I started up the terminal, added 'NO_NEW_FAIR_SLEEPERS' to the scheduler, closed the terminal, and repeated the process. At the end of each process I used the illume 'next window' arrow to flip through all the open windows twice - 5 separate windows - waiting for a full redraw before proceeding, starting claws-mail was noticable faster - 18s vs. 23s (about 20% faster), and opening the inbox was also faster 14s vs 18s. Unfortunately the SHR settings panel and SHR messages were about the same. Swapping windows was also a lot quicker - 15s vs. 10s. It'd be good if we had more info - but based on this, it definitely looks like a win to leave enabled. Warren On Mon, Sep 14, 2009 at 10:43 AM, Rui Miguel Silva Seabra <r...@1407.org>wrote: > On Mon, Sep 14, 2009 at 03:26:20PM +0100, Rui Miguel Silva Seabra wrote: > > On Mon, Sep 14, 2009 at 01:51:44PM +0400, Paul Fertser wrote: > > > Thanks to LKML discussion there's an interesting switch found that > > > reportedly makes CFS behave as good as BFS for typical desktop > workloads. > > > > > > Read all the details at [1] and to try it on your devices, simply do: > > > > > > mkdir /debug > > > mount -t debugfs none /debug > > > echo NO_NEW_FAIR_SLEEPERS > /debug/sched_features > > > > > > It will magically solve all the problems but i hope it can improve > > > experience at least somewhat. > > > > > > [1] http://marc.info/?l=linux-kernel&m=125260838709566&w=3 > > > > I will keep it on for some more time, but I must say that the effect > > was immediate. This is what I did try immediately and already felt a > > difference: > > > > 1) expand panel (faster) > > 2) get task list (faster) > > 3) switch applications from task list (faster) > > 4) switch applications from panel left and right buttons (faster) > > 5) suspend (faster) > > 6) resume (faster) > > > > Of course I have no idea on the effects of power saving or how much > > of these faster things don't actually suffer from some psychological > > effect :) > > 7) loading SHR's Dialer (faster) > 8) time between pressing 'call' and call actually being made (faster) > > Rui > > _______________________________________________ > Openmoko community mailing list > community@lists.openmoko.org > http://lists.openmoko.org/mailman/listinfo/community > -- Warren Baird - Photographer and Digital Artist http://www.synergisticimages.ca
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