NVIDIA Jetson Orin Nano - Maximizing Performance

NVIDIA®Jetson Orin Nano™
Introduction
SoM Overview Carrier Boards NVIDIA developer kit Software Development Support
Jetpack 5.X
Getting Started Flashing the board using GUI Installer JetPack Components Kernel Compile CMD flash Performance Tuning Evaluating Performance Set Values Manually Tuning Power Maximizing Performance
Development in the Board
Getting into the Board Using Serial Console Using SSH Using Ubuntu Login Installing Packages
Camera Sensors Support
IMX219 IMX708
Contact Us

Activate CPUs

By default 6 out of 6 possible CPU cores are enabled on the Jetson Orin Nano. You can activate/deactivate them with the following commands:

First is necessary to access as root (you need root permissions)

sudo su

Then, you can deactivate the CPU cores:

echo 0 > /sys/devices/system/cpu/cpu1/online
echo 0 > /sys/devices/system/cpu/cpu2/online
echo 0 > /sys/devices/system/cpu/cpu3/online
echo 0 > /sys/devices/system/cpu/cpu4/online
exit

You must activate all CPUs before running jetson_clocks to overclock these CPUs too. Remember to leave at least one core activated.

Jetson Clocks

The Orin Nano provides the jetson_clocks.sh script to maximize Jetson Orin performance by setting static max frequency to CPU, GPU, and EMC clocks. The script can also be used to show current clock settings, store current clock settings into a file, and restore clock settings from a file.

Options

--show           Displays the current settings.
--store [file]   Stores the current settings to a file. The default file is l4t_dfs.conf.
--restore [file] Restores the saved settings from the file. The default file is l4t_dfs.conf.

• To show the current settings:

sudo jetson_clocks --show

• To store the current settings:

sudo jetson_clocks --store

• To maximize Jetson Orin performance

sudo jetson_clocks

• To restore the previous settings stored in a file as seen in "To store the current settings:"

sudo jetson_clocks --restore