On Fri, 7 May 2010 17:16:11 -0400 Alex Deucher <alexdeucher@xxxxxxxxx> wrote: > This set of patches applies on top of the code in drm-radeon-testing. > > I've been testing this code pretty hard this week and it's been solid. > In addition to some fixes on top of what's in d-r-t, it also reworks > the pm code to support two basic methods: > > 1. "dynpm" > 2. "profile" > > You can select the methods via sysfs. Echo "dynpm" or "profile" to > /sys/class/drm/card-0/device/power_method. > > The "dynpm" method dynamically changes the clocks based on the number of pending > fences, so performance is ramped up when running GPU intensive apps, and > ramped down when the GPU is idle. The reclocking is attemped during > vertical blanking periods, but due to the timing of the reclocking > functions, doesn't not always complete in the blanking period, which can > lead to flicker in the display. Due to this, dynpm only works when a single > head is active. Hi Alex, I just built a new version of d-r-t with your patches from yesterday applied on top and wanted to share my experience with you and the list (Radeon 2600XT mobile): Dynpm has gotten unusable for me as there's a noticeable effect on mouse movement (getting sluggish) > > The "profile" method exposes 4 profiles that can be selected from: > 1. "default" > 2. "auto" > 3. "low" > 4. "high" > Select the profile by echoing the selected profile to > /sys/class/drm/card-0/device/power_profile. > the profile setting works but I can't check which clock speeds are set as I don't get any feedback (dmesg) anymore (Someone have any input on this?). The temps are unaffected whether I use the low or high profile, the only way I can tell that some things are working is by a 2000 fps-difference when running glxgears (something like 4000 on low and 6000 on high). I also attached a wattmeter to my my machine and the wattage alternates but I think I'm getting something along the lines of a 10W decrease in power consumption - it's very hard to tell, though. dynpm is a bit more effective and I even get lower temps (just under 50° compared to over 53 with the profile settings) but it's unusable right now as I already mentioned. All in all very nice work so far (this goes for all of you who've worked on radeon KMS PM!) - with the latest set of patches this is the first "revision" of KMS PM that actually "works" on my machine :) Klaus -- Klaus Doblmann B.A. - http://straightrazorguy.net - FSF member #7570 PGP-Key: http://www.doblmann.de/pgp_key.asc http://twitter.com/klausdoblmann A: Because it messes up the order in which people normally read text. See http://en.wikipedia.org/wiki/Posting_style Q: Why is top-posting such a bad thing? A: Top-posting. Q: What is the most annoying thing in e-mail? _______________________________________________ dri-devel mailing list dri-devel@xxxxxxxxxxxxxxxxxxxxx http://lists.freedesktop.org/mailman/listinfo/dri-devel
