rsync - Mar 2008 - Rsync sending complete file?

its installed and working but i have no idea what im doing wrong.
The command i'm using:

#rsync -rv /media/mir1/ /media/mir2/


Now this works, recursive and verbose.  However it takes approx 2 minutes
and the output at the end is:

sent 734973140 bytes  received 42 bytes   10888491.59 bytes/sec


forgive me if im wrong but that means its sent 734973140 bytes... I thought
rsync only sent the differences?

I have looked through --help and found nothing, currently going through the
'man' but their examples are dead simple (using no more paramaters than
mine) and only do changes, how come mine seems to do full file?

(mir1 and mir2 are on same partition so same type)

Have searched for about two hours now :(

Any help apprecaited.
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On Sat, 2008-03-01 at 12:51 -0800, Some user wrote:
> its installed and working but i have no idea what im doing wrong.
> The command i'm using:
> 
> #rsync -rv /media/mir1/ /media/mir2/
> 
> Now this works, recursive and verbose.  However it takes approx 2 minutes
> and the output at the end is:
> 
> sent 734973140 bytes  received 42 bytes   10888491.59 bytes/sec
> 
> forgive me if im wrong but that means its sent 734973140 bytes... I thought
> rsync only sent the differences?
> 
> I have looked through --help and found nothing, currently going through the
> 'man' but their examples are dead simple (using no more paramaters
than
> mine) and only do changes, how come mine seems to do full file?
> 
> (mir1 and mir2 are on same partition so same type)
Rsync doesn't do delta transfers when the source and destination are
both local because there's no point.  See:

http://lists.samba.org/archive/rsync/2007-September/018603.html

Matt