CPU and GPU monitoring on Apalis IMX8 QuandMax

Technical Support
,
1

Hi Toradex,

We’re currently working on Apalis IMX8 with Ixora Board.
Our applications are Multimedia oriented (media player, gui interface with Qt/QML) and we wish to monitor the GPU.
Currently, I’m using htop utility to monitor the procs activity.

For example, as we launch our video player with 4k contents, a single cpu can reach up to 100 or 102%.
How would it be possible to know which physical core is used ? Either the cortex-A72 or A53 ?

Do you know if a tool exists to monitor the GPU usage ?

Cheers,

Karim Atiki

2

Hi @karim !

How would it be possible to know which physical core is used ? Either the cortex-A72 or A53 ?

To find out to which processor a process is assigned, you can use htop or ps: linux - How to get all processes running on each CPU core in Ubuntu? - Unix & Linux Stack Exchange.

And, from the device tree, you can find the CPU index of each core: imx8qm.dtsi « freescale « dts « boot « arm64 « arch - linux-toradex.git - Linux kernel for Apalis, Colibri and Verdin modules

Do you know if a tool exists to monitor the GPU usage ?

NXP makes the gputop available. Please check: Imx8mm gputop tool.
Also, this article might be of your interest: 2D/3D Graphics Acceleration (GPU) | Toradex Developer Center

Best regards,

3

Thanks @henrique.tx !