On Wed, Aug 19, 2009 at 08:46:50AM -0500, Jim Leonard wrote:

> > I would take a look at a network traffic dump - maybe something is bad
> > there? More suspects: Windows firewall, some other firewall inbeteween?
> > Did you try Windows rsyncd -> Windows rsync (to rule out some strange
> > Linux vs. Windows network stack issue)?
> 
> It's not the network; I did a test using rsync as the client and rsyncd 
> as the server, on the same machine (ie. the network stack was involved 
> but not the network itself), and then I got 22MB/s.  While 22MB/s is an 
> improvement over 5MB/s, it's still a long ways away from the performance 
> I saw doing smb backups with BackupPC (65MB/s using smbclient).

Half the throughput locally is reasonable - you've got twice the disk
activity (and it's usually competing for the same disk). I've just had
this here on a Linux box where I tested an rsync-based backup of Vmware
images. When I copied the images to the box, it maxed out at around
50-60 MB/s which seems to be the limit of the el-cheapo external RAID.
When I rsynced locally (rsync /raid/somewhere /raid/somewhereelse -
actually just a copy), I saw 25-30 MB/s throughput.

I'd rule out the network. Samba might be doing fancy things to the TCP
level etc. Or you might try establishing an ssh tunnel to the Windows
host (or from Windows host to BackupPC server using putty which might be
easier), then point rsyncd to the local end of the tunnel.

HTH,

Tino.

-- 
"What we nourish flourishes." - "Was wir nähren erblüht."

www.lichtkreis-chemnitz.de
www.craniosacralzentrum.de

------------------------------------------------------------------------------
Let Crystal Reports handle the reporting - Free Crystal Reports 2008 30-Day 
trial. Simplify your report design, integration and deployment - and focus on 
what you do best, core application coding. Discover what's new with 
Crystal Reports now.  http://p.sf.net/sfu/bobj-july
_______________________________________________
BackupPC-users mailing list
BackupPC-users AT lists.sourceforge DOT net
List:    https://lists.sourceforge.net/lists/listinfo/backuppc-users
Wiki:    http://backuppc.wiki.sourceforge.net
Project: http://backuppc.sourceforge.net/