Executing jetson_clocks does nothing

Autonomous Machines Jetson & Embedded Systems Jetson AGX Xavier
1

Hi,

I have Jetson AGX Xavier. When I execute sudo jetson_clocks nothing happens. I mean the fan does not start and I don’t notice any changes in the performance. Any help?

Below is the content of l4t_dfs.conf after executing sudo jetson_clocks --store

/sys/devices/system/cpu/cpu0/online:1
/sys/devices/system/cpu/cpu1/online:1
/sys/devices/system/cpu/cpu2/online:1
/sys/devices/system/cpu/cpu3/online:1
/sys/devices/system/cpu/cpu4/online:1
/sys/devices/system/cpu/cpu5/online:1
/sys/devices/system/cpu/cpu6/online:1
/sys/devices/system/cpu/cpu7/online:1
/sys/devices/system/cpu/cpu0/cpufreq/scaling_min_freq:2265600
/sys/devices/system/cpu/cpu1/cpufreq/scaling_min_freq:2265600
/sys/devices/system/cpu/cpu2/cpufreq/scaling_min_freq:2265600
/sys/devices/system/cpu/cpu3/cpufreq/scaling_min_freq:2265600
/sys/devices/system/cpu/cpu4/cpufreq/scaling_min_freq:2265600
/sys/devices/system/cpu/cpu5/cpufreq/scaling_min_freq:2265600
/sys/devices/system/cpu/cpu6/cpufreq/scaling_min_freq:2265600
/sys/devices/system/cpu/cpu7/cpufreq/scaling_min_freq:2265600
/sys/devices/system/cpu/cpu0/cpuidle/state0/disable:1
/sys/devices/system/cpu/cpu0/cpuidle/state1/disable:1
/sys/devices/system/cpu/cpu1/cpuidle/state0/disable:1
/sys/devices/system/cpu/cpu1/cpuidle/state1/disable:1
/sys/devices/system/cpu/cpu2/cpuidle/state0/disable:1
/sys/devices/system/cpu/cpu2/cpuidle/state1/disable:1
/sys/devices/system/cpu/cpu3/cpuidle/state0/disable:1
/sys/devices/system/cpu/cpu3/cpuidle/state1/disable:1
/sys/devices/system/cpu/cpu4/cpuidle/state0/disable:1
/sys/devices/system/cpu/cpu4/cpuidle/state1/disable:1
/sys/devices/system/cpu/cpu5/cpuidle/state0/disable:1
/sys/devices/system/cpu/cpu5/cpuidle/state1/disable:1
/sys/devices/system/cpu/cpu6/cpuidle/state0/disable:1
/sys/devices/system/cpu/cpu6/cpuidle/state1/disable:1
/sys/devices/system/cpu/cpu7/cpuidle/state0/disable:1
/sys/devices/system/cpu/cpu7/cpuidle/state1/disable:1
/sys/class/devfreq/17000000.gv11b/min_freq:1377000000
/sys/class/devfreq/17000000.gv11b/device/railgate_enable:0
/sys/kernel/debug/bpmp/debug/clk/emc/mrq_rate_locked:1
/sys/devices/pwm-fan/target_pwm:0
/sys/devices/pwm-fan/temp_control:1

Thanks.

3

Not sure what you are experiencing.
sudo jetson_clocks --store would store your current clock settings (should be slow after a fresh reboot). You may use this file saved conf for restoring later with sudo jetson_clocks --restore

If you just want to boost clocks, you would just try:
sudo jetson_clocks

Doesn’t this work out ? No fan spinning ?

4

hello elmarai_oussama,

we had change the behavior of jetson_clock scripts.
starting from JP-4.4, jetson_clocks no longer sets maximum fan speed by default. please enable --fan option if you prefer the old behavior,
you may also refer to documentation, check Maximizing Jetson Xavier Performance for more details.
thanks

5

Yes, the fan didn’t work by default when running jetson_clocks, but after adding the option --fan it is now working.
Thanks for your help and support.