From mboxrd@z Thu Jan 1 00:00:00 1970 From: Roland Dreier Subject: Re: RDMAoE / lossless Ethernet (ewg: SC'09 BOF - Meeting notes) Date: Wed, 23 Dec 2009 07:52:43 -0800 Message-ID: References: <2ED289D4E09FBD4D92D911E869B97FDD01AF10F2@mtlexch01.mtl.com> <4B31D048.5040001@voltaire.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: In-Reply-To: <4B31D048.5040001-smomgflXvOZWk0Htik3J/w@public.gmane.org> (Or Gerlitz's message of "Wed, 23 Dec 2009 10:09:44 +0200") Sender: linux-rdma-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org To: Or Gerlitz Cc: Liran Liss , Yevgeny Petrilin , Or Gerlitz , Richard Frank , Sean Hefty , Linux RDMA list , Paul Grun List-Id: linux-rdma@vger.kernel.org > Liran, I would say that OTOH global pause isn't the way to go and OTHO > IB RC functions quite bad when many packets are lost. As such RDMAoE > without PFC and mapping priorities into TCs (the Ethernet VLs) isn't > really for production, for any non trivial environment involving more > then one hop. Also, this email is from one month ago, any news on the > patches? I agree that implementing DCB is important for IBoE, but why do you say that a classical ethernet fabric with global pause isn't usable? That should be roughly equivalent to an IB fabric that uses only a single VL, which is the case for many production IB fabrics. - R. -- To unsubscribe from this list: send the line "unsubscribe linux-rdma" in the body of a message to majordomo-u79uwXL29TY76Z2rM5mHXA@public.gmane.org More majordomo info at http://vger.kernel.org/majordomo-info.html