How to change CPU clock frequency on one individual cores?

Autonomous Machines Jetson & Embedded Systems Jetson AGX Xavier
#1

It seems like I am only capable of changing the frequency of all the CPU cores at the same time,on AGX xavier.

For example:

echo “userspace” > /sys/devices/system/cpu/cpu1/cpufreq/scaling_governor

echo > /sys/devices/system/cpu/cpu1/cpufreq/scaling_setspeed

will make all CPU cores that are currently on go to that frequency, not just CPU core 1.

I have been using this wiki for reference:

http://elinux.org/Jetson/Performance

#2

Please refer to NVIDIA Jetson Linux Developer Guide : Clock Frequency and Power Management | NVIDIA Docs

#3

Didn’t help much and didn’t see any solution to this problem.

#4

If can’t find it from that section, then means it’s not supportred.

#5

I was worried because I didn’t find it, not because it wasn’t supported

#6

why it doesn’t support individual cpu frequency adjustment

#7

Why it’s required? Any use case?

#8

reserch on CPU&GPU SOC scheduling

#9

You could try to use NVIDIA Nsight Systems | NVIDIA Developer to analyze and optimize software performance.