Monitor and log to find high load process?

Is there a light weight tool to monitor and log very high load processes? About once a week for the past couple months my RockPi4 gets extremely high load and stops responding to even SSH login requests. I'd like to run something on that same machine that will log what is generating that load. It does seem to occur around every 7 days, but not at the same time of day. I run quite a few docker containers, but I have had uptimes over a year in the past. TIA