How to tell what's causing CPU spikes?

Bob, if only my educated guesses were as good as yours ;-)

Below is before and after screen caps of the fresh install:

Before:

After:

Huy Vu said:

Hi Jeff,

I think you should console to UTM (ssh, telnet), log on UTM then check cpu use with command: top

On screen, you can see service are running on system. From that, you know cause CPU spikes.

Hope it can help you

 

Thanks for the suggestion. I already did that but I wasn't able to pin down the cause from what I was seeing on the screen.

Thanks for being the guinea pig, Jeff - we all learned something here!

Cheers - Bob

I'm still on 9.506.  Will probably wait til the end of the month before upgrading.  Will image the utm vm before I do anything.  Backup files are nice, but being able to restore to an exact prior state is even better.  Unless backup separately somehow, I don't believe log files are part of any backup file.