Constant CPU usage of processes 'irq/297-1-0008' and 'sugov:8'

Hi everyone,

I realized that there is a constant CPU usage of around 10% due to two processes on both my Jetson AGX Orins:

  • irq/297-1-0008

  • sugov:8

Now IRQ 297 seems to ‘fire’ around 800 times per second, according to watch -n 1 grep 297: /proc/interrupts, and seems to be GPIO-related. Since I am not really familiar with how GPIOs work on this board I don’t know if this is intended behaviour or not.

My question is this: Can this somehow be stopped? We don’t need the GPIOs, so we could turn them off completely.

Hi sebastian.fontius,

Are you using the devkit or custom board?
What’s your Jetpack version in use?

How did you check CPU usage?
Could you share the full result of cat /proc/interrupts for further check?

Hi KevinFFF,

both devices are bog-standard Nvidia Jetson AGX Orin (part number 945-13730-0000-000).

The JetPack version is as follows:

user@duke:~$ cat /etc/nv_tegra_release
# R34 (release), REVISION: 0.1, GCID: 29941907, BOARD: t186ref, EABI: aarch64, DATE: Sat Mar 12 02:32:39 UTC 2022


user@gordon:~$ cat /etc/nv_tegra_release
# R34 (release), REVISION: 0.1, GCID: 29955323, BOARD: t186ref, EABI: aarch64, DATE: Tue Mar 15 08:13:50 UTC 2022

I checked the CPU usage using htop, but top shows the same. Also programs of a colleague ran measurably slower, if they were running on the affected CPU core.

Attached you will find a dump of /proc/interrupts. The line in question is 161.


interrupts.txt (29.9 KB)

Is that the devkit or custom board?

It seems a quite old release and I would suggest you verifying with the latest JP5.1.2(R35.4.1).

297:   83008628          0          0          0          0          0          0          0          0          0          0          0      gpio  10 Level     1-0008

Please check which node in your device tree registering for 1-0008.

@KevinFFF you were right! Flashing the latest release fixed the issue :).

Thanks for your help!

This topic was automatically closed 14 days after the last reply. New replies are no longer allowed.