* The backuppc server is an Intel P3 800MHz with 512MB RAM and
550GB or raid storage for data backups.
* The linux host I am backing up is a Dual Processor AMD64 2GHz with
2GB RAM.
* All are connected via 1Gbps Ethernet switch.
Since the MSW machines backup reasonably fast, I can rule out the
backuppc server.
Since the Linux host is fairly grunty I can rule out that as limiting
factor (sort of).
I have turned on the rsync --checksum-seed option as suggested by John
Pettitt. Hopefully that will improve things.
Thanks, Brendan.
dan wrote:
> because SMB backups are so much simpler. SMB almost always transfers
> significantly more data but has no mechanism for checking file
> contents for changes. on a local network, SMB will always back up far
> faster than rsync, but on a remote network, rsync will likely be
> faster as bandwidth becomes and issue.
>
> if you are having major performance issues they your server's CPU or
> DISK I/O may be an issue, else the rsyncd on the remote machine might
> be an issue.
>
> what are the specs on your server (CPU, Disk Drives, RAM, network)
> and also of the two clients.
>
> considering the 22.6GB i would guess that you have quite a lot of
> files. rsync has an issue with very high file counts.
>
> On Dec 16, 2007 6:01 PM, Brendan Simon < [EMAIL PROTECTED]
> <mailto:[EMAIL PROTECTED]>> wrote:
>
> I need to really speed up my backup of Linux boxes/directories !!!
> I'm using ssh/rsync to do Linux backups. As an example (see end
> for more details):
>
> * a backup of a 22.6GB Linux directory is taking 2037 minutes
> (34 hours = 1.4 days).
> * a backup of a 131.4GB WinXP directory is taking 1245 minutes
> (21 hours = 0.87 days).
>
>
> I thought rsync is supposed to be more efficient than a raw copy,
> but obviously not. I'm presuming it is rsync that is issue here.
> Would rsyncd improve the speed?
> Maybe it would be faster with nfs/tar but I'm a little concerned
> about security ?
>
> How can I get my Linux backups to be at least as fast as the
> Windows backups.
>
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