Im currently testing some Raspberry Pis (3 x RPi3 and 1xRPi4) as we want to move everything over to Balena.
Everything is fine except for a strange issue where if I push a code/Docker file update (even a small one to a single service) the CPU/Load will become very high. It will move from circa 10% to 50% usage.
The picture shows the base CPU before the push. The increase it after the push and the sudden drop is rebooting the board
I have stopped all of the containers and then restarted them but the base idle CPU is still higher than before the push.
I have also done in the host OS:
systemctl stop resin-supervisor
balena stop $(balena ps -aq)
systemctl stop balena
systemctl start balena
systemctl start resin-supervisor
And it is the same.
If I actually reboot the device its immediately fixed
This doesnt happen on every box when pushes are done and it wont happen at all sometimes but it is doing it quite regularly, every couple of pushes
All the boxes are running the same code
The Balena Host OS is untouched
Any help would be appreciated as this could be a deal breaker for us