I've just updated my Macbook Air to Big Sur.
After the update the process opendirectoryd
is constantly using about 70% of cpu.
I've searched for the same problem, I haven't found any Big Sur related problems. There were recomendations to disable LDAP and/or Active Directory, but I'm not using any.
After killing the process it appears again. I've searched /var/log/*.log, but I haven't found any errors that can help fix this problem.