Originally posted by netkas
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More Radeon Power Management Improvements
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Originally posted by Pfanne View Post
lower core clock -> lower freq of triangle setup stage -> a bit slower rendering -> should result in little fps drop, but there was no drop.
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Originally posted by LiquidAcid View PostHuh, what makes you think so?
Neither the DDX nor mesa do interface with the pm AFAIK, so why would it be necessary to rebuild X components?
OK. Maybe I'm just another blind man near elephant ;-)
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Originally posted by netkas View Postu really think I dont know it?
lower core clock -> lower freq of triangle setup stage -> a bit slower rendering -> should result in little fps drop, but there was no drop.
who knows
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Originally posted by Pfanne View Postmaybe your fps was cpu limited to begin with, so your fps didnt really change.
who knows
here is results with latest radeon-testing branch
14937 frames in 5.0 seconds = 2986.450 FPS
16194 frames in 5.0 seconds = 3238.794 FPS
16354 frames in 5.0 seconds = 3270.604 FPS
14908 frames in 5.0 seconds = 2981.395 FPS
switch from default to low
12667 frames in 5.0 seconds = 2533.344 FPS
12694 frames in 5.0 seconds = 2535.207 FPS
12616 frames in 5.0 seconds = 2522.880 FPS
12609 frames in 5.0 seconds = 2521.765 FPS
12641 frames in 5.0 seconds = 2528.155 FPS
switch from low to high
13927 frames in 5.0 seconds = 2785.204 FPS
14070 frames in 5.0 seconds = 2813.940 FPS
still memory reclocking results in screen flickerings.
and dynpm method seems to doesnt work at all, it just keeps using profile I set before.
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Experimenting with new PM
Hi all! I was (and still am) happy with my Debian Lenny & fglrx on my HP Compaq NC8430 notebook with X1600 Mobility, but reading about the advances I decided to give the open power management a try. First I tried Ubuntu Lucid, with overclock.net's howto's I installed a new kernel and I was really impressed, now my fan spins almost regularly at 55% which is where fglrx (and Windows) make it too, without the recent power management advances it would be at 70% or sometimes even at 80%.
Power consumption was not as satisfactory, though. I managed to get Lucid at 27.4 W, whereas Lenny with fglrx is at 20.5 W, still far from Windows at 13-14 W. Powertop was constantly reporting something about sound modules that I tried to google but didn't find any other solution than blacklisting them, but it still didn't lower the power consumption.
Then I thought about why not trying Arch Linux, where no bloat is installed. I used to have Arch on my previous laptop, but due to overheating the X1600 I had stopped using it on NC8430. I downloaded the newest install image, and to my surprise the 2.6.33 kernel's KMS didn't work on my computer (the screen got all striped, like a loading screen of Sinclair Spectrum's tape programs making it unreadable, although I could see that the screen was functioning "behind the stripes"). So I had to disable KMS already at the install phase (and get the fan to 80%!). I updated to the new kernel on my hot computer, only to see that it didn't have power profiles (maybe it would have had dynamic PM but I didn't try it). So then another kernel from radeon repo and voil?, I had PM even without Xorg! However, power consumption is only marginally better than Lucid's at 25.9 W so there's still some work ahead, although I'm not sure whether it is with the GPU or other components, and I haven't undervolted the CPU yet which I always do with windows, there's a kernel version conflict with PHC that I try to resolve next.
If it is of any use for the developers, I post here some readings of the temperature sensors as a benchmark. I don't remember (or even know) what they are exactly besides the last one that is the fan percentage. The numbering has two ways, TZ0-TZ5 or T1-T6, but the order below is from smallest to largest (the last being the fan):
Code:Temp sensor : T1 T2 T3 T4 T5 T6 Windows Vista: 50 44 43 39 20 55, power consumption 14 W Ubuntu Lucid : 50 44 58 40 31 55, power consumption 27.4 W Arch Linux : 50 45 56 40 29 55, power consumption 25.9 W
Time permitting, I am willing to run new tests to see how close to Windows Linux's PM can get.
So a big thank you and congratulations to the developers, you are doing really well!
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Hi, sorry for stupidly jumping in but I am kind of lost in the debris of this thread.
So, simple question: can I get the PM patch somewhere in a consistent state applicable to 2.6.35rc4 kernel, or maybe to 2.6.34?
I measured my (idle) system's power consumption. Using fglrx instead of KMS makes a difference of about 45W which is a lot in these hot days.
Gfx card: regular HD5770.
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