Is your SQL server on the same server as your NPM?
No, the sql server is on a seperate sql2005 cluster.
I do have a snapshot running before the upgrade as a rollback, not sure if this is contributing to the cpu usage, but I dont want to delete it until the upgrade is successful.
Please open a support ticket so we can investigate further.
If you open it online, please put NPM 10.1 RC in the subject