Mark Coetser <firstname.lastname@example.org> wrote on 09/18/2012
> I am busy running a full clean rsync to time exactly how long it will
> take and will post results compared to a clean full backup with
> backuppc, I can tell you that the network interface on the backup
> is currently running at 200Mbs transfer speed.
Once it is complete, wait a day or so and then re-run
the full backup *and* the native rsync over the contents of the first rsync.
That will be a pretty good comparison of not-first backups.
Frankly, you don't even have to wait. Once each
of them are complete, immediately re-run them and compare the results.
There may be a very minimal amount of new files, but that isn't going
to affect the order of magnitude of the results, and the difference you
will see will be in the neighborood of that.
That will tell you what I think I already know: the
Perl-based rsync is *terrible*. But it makes the magic of BackupPC
work--if you feed it enough resources, it seems.
Timothy J. Massey