On a Pi 5, I have a tight control loop running on an isolated core (e.g. `isolcpus=domain,managed_irq,3 irqaffinity=0-2 rcu_nocbs=3`). It runs nice and steady, except consistently every 2~3 seconds it jitters for about a half a second.
I've tried killing just about anything I could: No UI, no wifi, no bluetooth, disabled many services, but the jitter remains.
Given that I have so little running, I'm assuming this is some periodic service in the kernel.
Does anyone know, off-hand, what could be interrupting the system every 2~3 seconds causing such a disturbance?
I've tried killing just about anything I could: No UI, no wifi, no bluetooth, disabled many services, but the jitter remains.
Given that I have so little running, I'm assuming this is some periodic service in the kernel.
Does anyone know, off-hand, what could be interrupting the system every 2~3 seconds causing such a disturbance?
Statistics: Posted by JinShil — Tue Apr 23, 2024 8:26 am — Replies 6 — Views 83