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From: Roland Dreier <rdreier-FYB4Gu1CFyUAvxtiuMwx3w@public.gmane.org>
To: Or Gerlitz <ogerlitz-smomgflXvOZWk0Htik3J/w@public.gmane.org>
Cc: Liran Liss <liranl-VPRAkNaXOzVS1MOuV/RT9w@public.gmane.org>,
	Yevgeny Petrilin
	<yevgenyp-VPRAkNaXOzVS1MOuV/RT9w@public.gmane.org>,
	Or Gerlitz <or.gerlitz-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>,
	Richard Frank
	<richard.frank-QHcLZuEGTsvQT0dZR+AlfA@public.gmane.org>,
	Sean Hefty <sean.hefty-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>,
	Linux RDMA list
	<linux-rdma-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>,
	Paul Grun
	<pgrun-klaOcWyJdxkshyMvu7JE4pqQE7yCjDx5@public.gmane.org>
Subject: Re: RDMAoE / lossless Ethernet (ewg: SC'09 BOF - Meeting notes)
Date: Wed, 23 Dec 2009 07:52:43 -0800	[thread overview]
Message-ID: <adahbrh1yd0.fsf@roland-alpha.cisco.com> (raw)
In-Reply-To: <4B31D048.5040001-smomgflXvOZWk0Htik3J/w@public.gmane.org> (Or Gerlitz's message of "Wed, 23 Dec 2009 10:09:44 +0200")


 > 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.
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  parent reply	other threads:[~2009-12-23 15:52 UTC|newest]

Thread overview: 10+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
     [not found] <2ED289D4E09FBD4D92D911E869B97FDD01AF10F2@mtlexch01.mtl.com>
     [not found] ` <2ED289D4E09FBD4D92D911E869B97FDD01AF10F2-ia22CT07NJfiMCgWhms8HQC/G2K4zDHf@public.gmane.org>
2009-12-23  8:09   ` RDMAoE / lossless Ethernet (ewg: SC'09 BOF - Meeting notes) Or Gerlitz
     [not found]     ` <4B31D048.5040001-smomgflXvOZWk0Htik3J/w@public.gmane.org>
2009-12-23 15:52       ` Roland Dreier [this message]
     [not found]         ` <adahbrh1yd0.fsf-BjVyx320WGW9gfZ95n9DRSW4+XlvGpQz@public.gmane.org>
2009-12-23 22:12           ` Or Gerlitz
     [not found]             ` <15ddcffd0912231412y8f6724fh5a7036f30117189e-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2009-12-24  0:46               ` Roland Dreier
     [not found]                 ` <adad42519n5.fsf-BjVyx320WGW9gfZ95n9DRSW4+XlvGpQz@public.gmane.org>
2009-12-24  8:40                   ` Liran Liss
     [not found]                     ` <2ED289D4E09FBD4D92D911E869B97FDD0222EFDF-ia22CT07NJfiMCgWhms8HQC/G2K4zDHf@public.gmane.org>
2009-12-24 12:49                       ` Or Gerlitz
2009-12-24 12:25                   ` Or Gerlitz
     [not found]                     ` <4B335DCD.4080201-smomgflXvOZWk0Htik3J/w@public.gmane.org>
2009-12-24 15:59                       ` Roland Dreier
     [not found]         ` <001101ca8411$68244b80$386ce280$@com>
2009-12-23 22:17           ` Or Gerlitz
     [not found]             ` <15ddcffd0912231417h6e47db36ledbdb2ad6cc66c0e-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2009-12-24  0:09               ` Paul Grun

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