I knew I had a big backup to do to my home networked drive, so I started the copy late last night, thinking it would complete by morning. Not the first time I've done that and it's worked out ok. Especially after I turned off the "Sleep after 3 hours" setting
I watched for a little bit and SuperDuper was clicking thru the files at a good rate. But when I came back this morning, 7 hours later, there was only about 400,000 files done out of about 1,400,000. If I waited seevveeerrraaallll minnnuuuttteeeeesss, I could see the file counter was still clicking over but very slowly. Right now, it's been on the same file while I'm writing this.
So my impression is that in the overnight inactive period SuperDuper got pushed way down in the run time priority, or something like that. Is there a way to recover from this situation? Or do I just give up on the now 12 hours invested and restart the copy? At the current rate, this is going to take about 3 days...