Il 04/09/2012 16:15, Ben Pfaff ha scritto:
On Tue, Sep 04, 2012 at 09:32:13AM +0100, mvp...@iol.pt wrote:
I have read this
post http://openvswitch.org/pipermail/dev/2012-August/020157.html and it
seems that at the moment this awesome improvements only work under freeBSD.
Is in the rode map of OVS the intention of put this available for generic
linux distributions, soon?
I doubt it only works on FreeBSD, but I also doubt that the threaded
userspace datapath is faster than the Linux-specific kernel datapath.
_______________________________________________
You are right on both points. It also works on Linux and, of course, it
is slower than the in-kernel datapath. According to my measurements, the
Open vSwitch kernel datapath is only slightly slower then the plain
Linux bridge, and can do ~800 Kpps in the best case.
There is a use, however, for a fast Linux userlevel datapath. We are
trying to add Open Flow support in PlanetLab, and the Open vSwitch
userlevel datapath offers an easy solution for the integration (at
least, far more easier than the kernel datapath).
Giuseppe
--
Dr. Ing. Giuseppe Lettieri
Dipartimento di Ingegneria della Informazione
Universita' di Pisa
Largo Lucio Lazzarino 2, 56122 Pisa - Italy
Ph. : (+39) 050-2217.649 (direct) .599 (switch)
Fax : (+39) 050-2217.600
e-mail: g.letti...@iet.unipi.it
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