I've been using duplicity for a few years now and have been quite satisfied. It did seem slow when I first started using it. I learned to live with it; you run

I've been using duplicity for a few years now and have been quite satisfied. It did seem slow when I first started using it. I learned to live with it; you run backups overnight anyways. From what I can remember, a lot of the slowness came from GPG, and specifically files being compressed before encryption. Disabling compression speeds things up, but trades off disk space (and security). I wonder what it'd take to reengineer the thing to take advantage of multicore -- being CPU-bound on a single core is I think what makes it slow.