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.<br>
<br>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,<br>
<br>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.<br>
<br>It'd be good if we had more info - but based on this, it definitely looks like a win to leave enabled.<br><br>Warren<br><br><br><div class="gmail_quote">On Mon, Sep 14, 2009 at 10:43 AM, Rui Miguel Silva Seabra <span dir="ltr"><<a href="mailto:rms@1407.org">rms@1407.org</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;"><div class="im">On Mon, Sep 14, 2009 at 03:26:20PM +0100, Rui Miguel Silva Seabra wrote:<br>
> On Mon, Sep 14, 2009 at 01:51:44PM +0400, Paul Fertser wrote:<br>
> > Thanks to LKML discussion there's an interesting switch found that<br>
> > reportedly makes CFS behave as good as BFS for typical desktop workloads.<br>
> ><br>
> > Read all the details at [1] and to try it on your devices, simply do:<br>
> ><br>
> > mkdir /debug<br>
> > mount -t debugfs none /debug<br>
> > echo NO_NEW_FAIR_SLEEPERS > /debug/sched_features<br>
> ><br>
> > It will magically solve all the problems but i hope it can improve<br>
> > experience at least somewhat.<br>
> ><br>
> > [1] <a href="http://marc.info/?l=linux-kernel&m=125260838709566&w=3" target="_blank">http://marc.info/?l=linux-kernel&m=125260838709566&w=3</a><br>
><br>
> I will keep it on for some more time, but I must say that the effect<br>
> was immediate. This is what I did try immediately and already felt a<br>
> difference:<br>
><br>
> 1) expand panel (faster)<br>
> 2) get task list (faster)<br>
> 3) switch applications from task list (faster)<br>
> 4) switch applications from panel left and right buttons (faster)<br>
> 5) suspend (faster)<br>
> 6) resume (faster)<br>
><br>
> Of course I have no idea on the effects of power saving or how much<br>
> of these faster things don't actually suffer from some psychological<br>
> effect :)<br>
<br>
</div> 7) loading SHR's Dialer (faster)<br>
8) time between pressing 'call' and call actually being made (faster)<br>
<div><div></div><div class="h5"><br>
Rui<br>
<br>
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</div></div></blockquote></div><br><br clear="all"><br>-- <br>Warren Baird - Photographer and Digital Artist<br><a href="http://www.synergisticimages.ca">http://www.synergisticimages.ca</a><br>