Hi,
looks as if there is something going on in the suricata forum regarding cpu load:
=> https://forum.suricata.io/t/cpu-usage-of-version-6-0-0/706
I can't really interpret the numrous screenshots and ongoing discussions, but could it be that this is related to what I'm experiencing when upgrading from 5.0.x to 6.0.x?
Best, Matthias