I just gave this a shot, and although it was slightly faster, it was not
significant enough to fall outside a margin of error (about two minutes
faster on a 40 minute backup.)

If I were to speculate about a "culprit" for rsync's poor performance
relevant to smb, I'd suggest that it's the many layers sitting between
rsync and the Windows' file API.

> Tino Schwarze wrote:
> Most of the people using backuppc are probably linux oriented so bad
> performance on windows is just expected, and compensated for by running
> more instances concurrently if the server is waiting.  But, I'd try
> adding something like:
> socket options = TCP_NODELAY SO_RCVBUF=8192 SO_SNDBUF=65536
> to the rsyncd/deltacopy.conf file (and restart) to see if it helps.


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