I have a Raspberry Pi 3 Model B and would like to know how busy the GPU gets when I run certain tests to determine whether it would be possible for me to do certain things. I see that the GPU is a bit old (2014) as per:
What I'm after is something similar to what nVidia offers in their settings window showing a % of usage of the GPU. I don't expect a nice graphical tool, but a way to access that type of info somewhere would be fantastic!
$ uname -a Linux raspberrypi 4.9.59-v7+ #1047 SMP Sun Oct 29 12:19:23 GMT 2017 armv7l GNU/Linux
$ lsb_release -a No LSB modules are available. Distributor ID: Raspbian Description: Raspbian GNU/Linux 9.3 (stretch) Release: 9.3 Codename: stretch