Question and feature requests for processor bound systems

Evan Harris eharris at
Thu Aug 18 17:20:42 GMT 2005

On Thu, 18 Aug 2005, Jan-Benedict Glaw wrote:

> By design, rsync trades CPU power for bandwidth.

True.  But just because that is it's main focus doesn't mean we can't also
provide a facility for hinting the types of files being transferred to
lessen the impact of that tradeoff for systems that are both bandwidth AND
cpu bound.

> > Option 4: Add an option, maybe --optimize-cpu, or --weak-checksums that
> > would tell rsync to only use weak checksums up until the point in the file
> > where the weak checksums first differ, and then fallback to the normal weak
> > and strong checksums from there on.  This is a hint that most likely the
> > file is appended to, but will still catch most occurances where a file was
> > modified.
> Option 4: tar over netcat.

How would that not transfer portions of an existing file over again?


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