Comments for Obihörnchen's Blog

Comment on ODROID-XU4 tune network and USB speed by ed

ed — Sun, 17 Dec 2023 12:23:13 +0000

Looks a little bit different but still a great method for speed improovement on armbian bullseye. Thank you!

omv:~:# grep -E ‘CPU0|usb’ /proc/interrupts
CPU0 CPU1 CPU2 CPU3 CPU4 CPU5 CPU6 CPU7
124: 1 0 0 0 0 0 0 0 GICv2 103 Level ehci_hcd:usb1, ohci_hcd:usb2
140: 73 0 24453 0 0 0 0 0 GICv2 104 Level xhci-hcd:usb3
141: 765 0 0 0 0 0 0 569180 GICv2 105 Level xhci-hcd:usb5
omv:~:#
omv:~:# echo 6 > /proc/irq/124/smp_affinity_list
omv:~:# echo 5 > /proc/irq/140/smp_affinity_list
omv:~:# echo 4 > /proc/irq/141/smp_affinity_list

Comment on Installing Arch Linux and setting up everything on Plug Computers like PogoplugV2 by David Albert

David Albert — Sat, 19 Feb 2022 18:17:40 +0000

Sadly, support for ARMv5 has been discontinued by Archlinux
see: https://archlinuxarm.org/forum/viewtopic.php?f=3&t=15721

Comment on Lower GPU clock of ODROID-XU4 for headless servers to save energy by GerryK

GerryK — Sat, 19 Jun 2021 13:38:10 +0000

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!

Comment on Lower GPU clock of ODROID-XU4 for headless servers to save energy by Obihoernchen

Obihoernchen — Sat, 06 Jul 2019 10:38:22 +0000

In reply to Rafael. Hey, thanks for letting me know. I did forget to update the post for 4.14 kernel. Fixed now :)

Comment on Lower GPU clock of ODROID-XU4 for headless servers to save energy by Rafael

Rafael — Tue, 02 Jul 2019 19:51:50 +0000

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.