> On 2018, Jun 15, at 9:06 AM, Bowie Bailey <bowie_bai...@buc.com> wrote: > > The CPUs were not busy. That's what I was confused about. I would have > expected to see a bottleneck at some point, but nothing seemed to be > busy. The CPUs were all at or below 20% and iowait was close to 0 most > of the time. I'm not sure how I would determine if the loopback was > saturated.
20% loaded with 6 or more cores would be a single thread running full speed on one core. A single task may not stay on one core, it may get moved around enough that it doesn't appear that any of the cores are heavily loaded. Doubly true if you have hyperthreading which causes additional CPU shuffling. I think you ran into single thread compression performance, plus any of the normal process, network, and IO latency that would compound with everything being on one machine. That sounds about right to me. First backups are slow. SSH probably wouldn't have made any difference at that speed. ED. ------------------------------------------------------------------------------ Check out the vibrant tech community on one of the world's most engaging tech sites, Slashdot.org! http://sdm.link/slashdot _______________________________________________ BackupPC-users mailing list BackupPC-users@lists.sourceforge.net List: https://lists.sourceforge.net/lists/listinfo/backuppc-users Wiki: http://backuppc.wiki.sourceforge.net Project: http://backuppc.sourceforge.net/