On 11/28 09:39 , Tim Hall wrote:
> Are there any known backuppc tweaks/settings that
> are proven to increase transfer performance over
> wan links? Specifically with using rsyncd or rsync
> as the transfer method.
the -C option to compress your SSH data is highly recommended. Also, going
with '-c blowfish-cbc' or '-c arcfour' may reduce CPU usage and increase
transfer rates. You can put this line in config.pl or in a per-host config
file:
$Conf{RsyncClientCmd} = '$sshPath -C -o CompressionLevel=9 -c blowfish-cbc
-q -x -l rsyncbakup $host $rsyncPath $argList+';
the '-l rsyncbakup' is part of my own setup for logging into a remote host
without being root (and from thence using a sudo command in the ssh DSA key
to get root access to files; preventing an attacker from subverting the ssh
command to do arbitrary things to the remote system).
If you're running >=v3 the following option will make all the incrementals
sync against the previous incremental, instead of the last full. This keeps
them from growing quite as quickly. (It's the behavior you expect from
rsync).
$Conf{IncrLevels} = [1, 2, 3, 4, 5, 6];
--
Carl Soderstrom
Systems Administrator
Real-Time Enterprises
www.real-time.com
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