On Wed, 2011-01-19 at 10:23 -0600, Les Mikesell wrote:
> On 1/19/2011 6:37 AM, Jeffrey Newman wrote:

> Rsync always sends the entire directory listing before starting and 
> holds it in RAM for the comparison.  If you have a huge number of files 
> you might be pushing one or both machines into swap which will slow it 
> down a lot.
> 
> Even if this is not the issue, you might be able to improve things by 
> breaking the backups into separate subdirectory targets if there are 
> reasonable places to do that.   You can take that another step if you 
> configure the server as though each subdirectory was a separate host, 
> using the ClientAlias setting to point to the same target.  That would 
> let you skew the timing so fulls would happen on different days for each 
> run.
> 

Isn't someone going to mention checksum caching to save processing on
the backup server side?
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