I may have a solution to this issue. Instead of adding the files one by one in AppendFilesFromPreviousSetWithPredicate()
, it may be much faster to first use AppendFilesFromPreviousSet()
in its implementation, and then delete the entries that aren’t needed. I’ll investigate this.
See Feature/improve usn 2 by dgehri · Pull Request #4287 · duplicati/duplicati · GitHub