On Thu, 22 Jan 2009, Warren Young wrote:

rsync doesn't use timestamps. It looks at the entire file contents for both source and target, and performs some pretty hefty computation on them. Thus, it only gives a speedup when copying files over a slow link between two machines. It's great over the Internet, not so great over a fast LAN, and useless within a single machine.

I have used rsync extensively for years, and sometimes in rather exotic ways. It does have a mode where timestamps are used.

I find your conclusions to be baseless. Usually when rsync is blamed to be slow, it is because it is used over SSH, which is slow.

Bob
======================================
Bob Friesenhahn
bfrie...@simple.dallas.tx.us, http://www.simplesystems.org/users/bfriesen/
GraphicsMagick Maintainer,    http://www.GraphicsMagick.org/



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