Difference in Jetson Nano Orin boot time between 8GB and 4GB models

[leonidhea]

I measured the boot times of a 4GB and an 8GB Jetson Nano. And the 4GB is the slowest at 10 seconds.
Is there any way to reduce this difference?

[KevinFFF]

Hi leonidhea,

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

Do you know where the 10 seconds come from? (i.e. which stage during boot up)

[leonidhea]

Hi

Thank you for your quick answer.

Are you using the devkit or custom board for Orin Nano?

I am using a “Jetson Orin IO Base” from Waveshare:

https://www.waveshare.com/jetson-orin-io-base.htm

What’s your Jetpack version in use?

The versions are the same in both Jetson: 8GB and 4GB.

This is the result of “apt-cache show nvidia-jetpack”

Version: 5.1.2-b104
Architecture: arm64
Maintainer: NVIDIA Corporation
Installed-Size: 194
Depends: nvidia-jetpack-runtime (= 5.1.2-b104), nvidia-jetpack-dev (= 5.1.2-b104)
Homepage: http://developer.nvidia.com/jetson

and this the result of “dpkg-query --show nvidia-l4t-core”

nvidia-l4t-core 35.4.1-20230801124926

Do you know where the 10 seconds come from? (i.e. which stage during boot up)

We are comparing the two versions of the booting process and we will send you the differences soon.

[leonidhea]

Thank you for your help

We have verified that the problem was the USB pendrive writing speed.

By changing the pendrive model we are booting both Jetson Orin Nano devices (4GB and 8GB) with very similar times, even if the total booting time is very long, much longer that with the Jetson Nano device.

[KevinFFF]

Okay, it seems you found the cause of boot time difference between these 2 Orin Nano modules.

@leonidhea

much longer that with the Jetson Nano device.

Yes, Jetson Nano and Orin Nano are different module and come with different L4T release and SW architecture so that there should be huge difference in boot time.
You could analyze the boot up sequence and remove the unused modules to optimize the boot time.