jhaglund wrote:

> What does one use if not rsync? 

In an admittedly non-backuppc environment I've been
experimenting with using 'rsync -W' (this means
don't use the rsync algorithm) to see if
problems similar to the ones you describe go away.
I'm still not sure of the result.

Using rsync with the "-W" argument means that
complete files will be transfered instead
of changed pieces. In an environment where
files tend to change completely, or not at
all, it makes sense to try this because it
means that rsync itself has less to do.

I read somewhere that the rsync algorithm is
intended for environments where disk bandwidth
is greater than network bandwidth. That's a good
way to think about it.

Cordially,

-- 
Jon Forrest
Research Computing Support
College of Chemistry
173 Tan Hall
University of California Berkeley
Berkeley, CA
94720-1460
510-643-1032
jlforrest AT berkeley DOT edu

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