On Fri, 16 Sep 2016, Ergi Thanasko wrote:

We were testing it between two similar servers rsynic and copy paste both ways ( read/write) was the same around 300MB/sec average. Of course the speed test on the pools provide higher throughput around 600MB/sec

I am not sure what 'copy paste' means, but rsync can be used in a couple of different ways. One way is that rsync is writing over NFS to the server. Another way is that rsync communicates via some means (ssh, netcat) to another rsync running on the server. Rsync must always query/check to see if/what data is existing while it does the copy.

It is useful to see that if you do two copies at the same time if the combined rate is much more than 300MB/sec average.

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