On Fri, 27 Jul 2012 09:03:15 +0100 Tim Fletcher <[email protected]> allegedly wrote: > > Even powerful modern x86 boxes are still CPU bound with scp so as > Tixy says adding scp to the mix complicates the testing. > > For example I get roughly USB2 wire-speed (30mb/s ish) from my > iconnect over iscsi, AoE or nfs but much slower if I use scp or rsync > over ssh. -- >
OK, OK, I picked a bad test.
For comparison, here are the results copying from NFS and CIFS mounts
alongside the original scp test figures.
scp NFS CIFS
slug 1.3 MB/s 3.9 MB/s 4.2 MB/s
DNS 320 3.6 MB/s 7.6 MB/s 5.6 MB/s
I confess I am puzzled by the difference between the two devices using
CIFS. I have repeated the tests and get the same results. It seems odd
that CIFS should be faster than NFS on the slug, but so much slower on
the DNS. I guess that may be down to implementation (or version)
differences.
Mick
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