Date: Sat, 18 Oct 2014 15:32:16 -0400 From: Allan Jude <allanjude@freebsd.org> To: freebsd-current@freebsd.org Subject: Re: ssh None cipher Message-ID: <5442C040.4090200@freebsd.org> In-Reply-To: <CAOjFWZ4EndnanZ_oyMeA9bH%2BxxTZ%2BJ8mnJtTdvBjTMYvUsXr2w@mail.gmail.com> References: <CAOc73CCvQqwg65tt9vs54CoU1HGvV7ZxLWeQwXiSOm8UjtV50w@mail.gmail.com> <alpine.GSO.1.10.1410172242240.27826@multics.mit.edu> <5441E834.2000906@freebsd.org> <544246E8.1090001@ijs.si> <CAOjFWZ4EndnanZ_oyMeA9bH%2BxxTZ%2BJ8mnJtTdvBjTMYvUsXr2w@mail.gmail.com>
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This is an OpenPGP/MIME signed message (RFC 4880 and 3156) --4SXHcoudoKe1TEJoi7s5hoRtg6hReCwDJ Content-Type: text/plain; charset=windows-1252 Content-Transfer-Encoding: quoted-printable On 2014-10-18 13:21, Freddie Cash wrote: > On Oct 18, 2014 3:54 AM, "Mark Martinec" <Mark.Martinec+freebsd@ijs.si>= > wrote: >> >> If the purpose of having a none cipher is to have a fast >> file transfer, then one should be using sysutils/bbcp >> for that purposes. Uses ssd for authentication, and >> opens unencrypted channel(s) for the actual data transfer. >> It's also very fast, can use multiple TCP streams. >=20 > That's an interesting alternative to rsync, scp, and ftp, but doesn't h= elp > with zfs send/recv which is where the none cipher really shines. >=20 > Without the none cipher, SSH becomes the bottleneck limiting transfers = to > around 400 Mbps on a gigabit LAN. With the none cipher, the network bec= omes > the bottleneck limiting transfers to around 920 Mbps on the same gigabi= t > LAN. >=20 > This is between two 8-core AMD Opteron 6200 systems using igb(4) NICs. > _______________________________________________ > freebsd-current@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-current > To unsubscribe, send any mail to "freebsd-current-unsubscribe@freebsd.o= rg" >=20 Actually, looking into it, the bbcp command can support a pipe at each end instead of files, so you can actually do a zfs send | zfs receive via bbcp, and use multiple concurrent connections, to get around TCP window stuff when going transatlantic I am going to be trying it out shortly. Note: the other big improvement in newer ssh is the HPN stuff, that is switched on since 9.2 I think. --=20 Allan Jude --4SXHcoudoKe1TEJoi7s5hoRtg6hReCwDJ Content-Type: application/pgp-signature; name="signature.asc" Content-Description: OpenPGP digital signature Content-Disposition: attachment; filename="signature.asc" -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.22 (MingW32) iQIcBAEBAgAGBQJUQsBEAAoJEJrBFpNRJZKfPFMQAIuIyEbPJSZhWdCr41devM4D EzJQaVrYqSe7eKJJL3pALTfP9O2EqKZ1WqQSlW4fCe/4DdU6YJBRy1WOOf60F5xQ /QeAdBWU8+b+qUs98fcWMPSVfH1eCz1tLgqLBFTOiZJ7W5/ul/wVu0tKq1bGBrvM GZNbAFHD1wRKqiMAh189nhxAYb96e5B4Hxxln8ZTcDrwYE+AY7gqvdTnffxqmLec 9Lhhk7fZnMa/j6nPZthWcxotCMArj0PYOZ9Iq9DpUgH/EytHF4ve+uwuy/jTH/UZ qziZCvjMZeZfNPGimmG2RT69KlolyWc0xJMcQn94Z7ycblvdqDQijjCLqkeVW8Ni QnyhIzIiffdrratLBJ81TAxywnNo41LHySWCgZs4SCpmzzxfsqzRffS4HQHyqcVz iLUi1y4dJ5gwqful5S3AB44N25SSrCtCkZ/CbuIpqLbCC/N1HaCpHNStSJTCs7rO 0UsWPkQFPLKij/1WCNhpvIUg/f9o0tF7Lg9Qt6Oz3fV5jHFskS43tkneW4E1P5Ie WVurBM4cIP2LqGwGFqbGWUdKFNZwb7L5rV9g4RdtM+vyOcO+9Uly/WDjYN07UqpN vvA6KCOfz9OmEqNgz9vkLGFNPH5AUUR3LogXQc+SJeuFVFqBFVe73uEDMwqTN3WH p3wgG1t3YJmJ+7EaVcQ/ =MX3a -----END PGP SIGNATURE----- --4SXHcoudoKe1TEJoi7s5hoRtg6hReCwDJ--
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