Mark Coetser <mark@tux-edo.co.za> wrote on 09/18/2012 10:21:42 AM:

> 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 server
> 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

 
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