Comments on: Lower GPU clock of ODROID-XU4 for headless servers to save energy https://obihoernchen.net/1340/lower-gpu-clock-of-odroid-xu4-for-headless-servers/ Beyond Reality Sat, 19 Jun 2021 13:38:10 +0000 hourly 1 https://wordpress.org/?v=6.9.3 By: GerryK https://obihoernchen.net/1340/lower-gpu-clock-of-odroid-xu4-for-headless-servers/comment-page-1/#comment-161964 Sat, 19 Jun 2021 13:38:10 +0000 http://obihoernchen.net/?p=1340#comment-161964 For all the alarm (arch linux arm) users who cannot use the debian/ubuntu sysfsutils mentioned here:
Create
# vi /etc/udev/rules.d/50-gpu-scaling-governor.rules
SUBSYSTEM==”devfreq”, ACTION==”add”, KERNEL==”11800000.gpu”, RUN+=”/bin/sh -c ‘echo powersave > /sys/devices/platform/soc/11800000.gpu/devfreq/11800000.gpu/governor'”

check it after reboot with

# udevadm info –attribute-walk –path=/devices/platform/soc/11800000.gpu/devfreq/11800000.gpu

looking at device ‘/devices/platform/soc/11800000.gpu/devfreq/11800000.gpu’:
KERNEL==”11800000.gpu”
SUBSYSTEM==”devfreq”
DRIVER==””
ATTR{available_frequencies}==”177000000 266000000 350000000 420000000 480000000 543000000 600000000″
ATTR{available_governors}==”userspace powersave performance simple_ondemand”
ATTR{cur_freq}==”177000000″
ATTR{governor}==”powersave”
ATTR{max_freq}==”600000000″
ATTR{min_freq}==”177000000″
ATTR{name}==”11800000.gpu”
ATTR{power/control}==”auto”
ATTR{power/runtime_active_time}==”0″
ATTR{power/runtime_status}==”unsupported”
ATTR{power/runtime_suspended_time}==”0″
ATTR{target_freq}==”177000000″

Have fun!

]]> By: Obihoernchen https://obihoernchen.net/1340/lower-gpu-clock-of-odroid-xu4-for-headless-servers/comment-page-1/#comment-81238 Sat, 06 Jul 2019 10:38:22 +0000 http://obihoernchen.net/?p=1340#comment-81238 In reply to Rafael.

Hey, thanks for letting me know. I did forget to update the post for 4.14 kernel. Fixed now 🙂

]]> By: Rafael https://obihoernchen.net/1340/lower-gpu-clock-of-odroid-xu4-for-headless-servers/comment-page-1/#comment-81160 Tue, 02 Jul 2019 19:51:50 +0000 http://obihoernchen.net/?p=1340#comment-81160 Not sure if I did it the right way, but on Linux kernel 4.14 I had to set the path as:

devices/platform/11800000.mali/devfreq/devfreq0/governor = powersave

Also doing a “service sysfsutils start” didn’t update the governor. But a reboot worked.

]]> By: bgx https://obihoernchen.net/1340/lower-gpu-clock-of-odroid-xu4-for-headless-servers/comment-page-1/#comment-61541 Thu, 12 Oct 2017 18:50:59 +0000 http://obihoernchen.net/?p=1340#comment-61541 Realy realy great. Thank you for this great tip.

]]> By: Zeg https://obihoernchen.net/1340/lower-gpu-clock-of-odroid-xu4-for-headless-servers/comment-page-1/#comment-59986 Fri, 25 Aug 2017 14:25:11 +0000 http://obihoernchen.net/?p=1340#comment-59986 In reply to alexmat.

Hi folks,
to prevent mixups since OMV3 has evolved as well:
The latest OMV distro with (…37) and relevant kernel need no further tuning and contain the latest tweaks already (except the useful enlargement of the system graphs of OMV and Temp measurements).

Nevertheless, if you want to have the very latest tiny improvements, just exchange the actual default /etc/init.d/armhwinfo with this one: https://github.com/armbian/build/blob/c36918212fd6ff1db933d5e8873a2ef3d4e2941a/packages/bsp/common/etc/init.d/armhwinfo#L90-L102 and you’re done. Nothing to struggle. 😉

Greetz,
Zeg

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