More Radeon Power Management Improvements

[agd5f]

You can manually select a power state and clock mode:
echo 3.0 > /sys/class/drm/card0/device/power_state
will select power state 3, clock mode 0.

[netkas]

yeah, thats what I did, I was asking, is it possible to make dynpm to use state 3, not state 1

[agd5f]

You'd need to adjust the power state selection algo in r600_get_power_state() in r600.c

[netkas]

hm, i guess this should be enough then

if (rdev->pm.num_power_states > 2)
- min_power_state_index = 1;
+ min_power_state_index = 3;

[DF5JT]

You can manually select a power state and clock mode:
echo 3.0 > /sys/class/drm/card0/device/power_state
will select power state 3, clock mode 0.

Uhm, somehow this does not exist here:

2.6.34-0.38.rc5.git0.fc14.i686 #1 SMP

Which is the latest Kernel from Fedora and should hold all the pm-stuff in it. Latest drm, mesa and ddx and I booted with dynpm=1 and

[drm] radeon: power management initialized

indicates that power management is working. However, I saw no improvement on lowered GPU temperatures whatsoever.

What did I miss?

[agd5f]

You need the drm-radeon-testing branch of the drm:

http://git.kernel.org/?p=linux/kernel/git/airlied/drm-2.6.git;a=shortlog;h=refs/heads/drm-radeon-testing

[daliusd]

You need the drm-radeon-testing branch of the drm:
http://git.kernel.org/?p=linux/kerne...radeon-testing

It is not enough to use drm-radeon-testing kernel. Some X parts must be rebuilt as well: http://www.phoronix.com/forums/showthread.php?t=20484

Anyway I am using drm-radeon-testing. Everything seems to be working. I can change profiles in sysfs but my GPU is still getting hot (Currently 89 degrees). I was trying to change profiles but nothing has helped. As well I see following messages in log:

[ 1223.517620] radeon 0000:01:05.0: efd38000 reserve failed for wait
[ 1325.118109] radeon 0000:01:05.0: efd38000 reserve failed for wait
[ 1328.719790] radeon 0000:01:05.0: efd38000 reserve failed for wait
[ 1433.991376] radeon 0000:01:05.0: efd38000 reserve failed for wait
[ 1489.719272] radeon 0000:01:05.0: efd38000 reserve failed for wait
[ 1576.114701] radeon 0000:01:05.0: efd38000 reserve failed for wait
[ 1975.846892] radeon 0000:01:05.0: efd38000 reserve failed for wait
[ 2022.020323] radeon 0000:01:05.0: efd38000 reserve failed for wait

[LiquidAcid]

It is not enough to use drm-radeon-testing kernel. Some X parts must be rebuilt as well: http://www.phoronix.com/forums/showthread.php?t=20484

Huh, 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?

[netkas]

since alex's last commit ( http://git.kernel.org/?p=linux/kerne...86c041340079db )

messages about changing clocks arent displaying in dmesg now, is there any way to check if reclocking actualy works and not failing due to - gui not idle ?

[netkas]

I run glxgears then change profile from high to low, and doesnt see any noticable fps change