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From: Roland Dreier <rdreier@cisco.com>
To: "Or Gerlitz" <or.gerlitz@gmail.com>
Cc: "Sean Hefty" <mshefty@ichips.intel.com>,
	linux-kernel@vger.kernel.org, general@lists.openfabrics.org
Subject: Re: [ofa-general] Further 2.6.23 merge plans...
Date: Tue, 17 Jul 2007 20:23:38 -0700	[thread overview]
Message-ID: <adaabtuo0n9.fsf@cisco.com> (raw)
In-Reply-To: <15ddcffd0707172020j5b68fcb2v7d3ca77863998020@mail.gmail.com> (Or Gerlitz's message of "Wed, 18 Jul 2007 06:20:15 +0300")

 > > But to be fair, it will be difficult to enable both QoS and local PR
 > > caching.  To me, this would be the strongest reason against using it.
 > > However, QoS places additional burden on the SA, which will make scaling
 > > even more challenging.
 > 
 > my understanding is that the local sa does a path-query where all the fields
 > except for the SGID are wildcard-ed. This means we expect the result to be a
 > table of all the paths from this port to every other port on the fabrics for
 > every pkey which this port is a member of etc, correct?
 > 
 > How do you plug here  the QoS concept of SID in the path query? are you
 > expecting the SA to realize what are all the services for which this port is
 > a "member"? does the proposed definision for QoS management at the SA
 > defines "services per gids" isn't it "what SL to user per Service"?

Or, thanks for rescuing this post.

I think this is an important question.  If we merge the local SA
stuff, then are we creating a problem for dealing with QoS?  Are we
going to have to revert the local SA stuff once the QoS stuff is
available?  Or is there at least a sketch of a plan on how to handle
this?

 - R.

  parent reply	other threads:[~2007-07-18  3:23 UTC|newest]

Thread overview: 31+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2007-07-12 23:07 [GIT PULL] please pull infiniband.git Roland Dreier
2007-07-12 23:15 ` Further 2.6.23 merge plans Roland Dreier
2007-07-13  0:17   ` [ofa-general] " Hal Rosenstock
2007-07-13  1:14   ` Sean Hefty
     [not found]     ` <15ddcffd0707172020j5b68fcb2v7d3ca77863998020@mail.gmail.com>
2007-07-18  3:23       ` Roland Dreier [this message]
2007-07-18  5:26         ` Sean Hefty
2007-07-18 17:05           ` Sean Hefty
2007-07-18 20:54             ` Sean Hefty
2007-07-13  5:47   ` Michael S. Tsirkin
2007-07-13 18:14     ` Roland Dreier
2007-07-13 18:50       ` [ofa-general] " Shirley Ma
2007-07-17 18:06         ` Roland Dreier
2007-07-14 17:54       ` Michael S. Tsirkin
     [not found]         ` <OF72F6B9D1.F60C4EEF-ON8725731A.00506757-8825731A.0024BD1C@us.ibm.com>
2007-07-16 14:55           ` [ofa-general] " Michael S. Tsirkin
2007-07-16 16:42         ` Roland Dreier
2007-07-16 20:05           ` Michael S. Tsirkin
2007-07-17 17:53             ` Roland Dreier
2007-07-13 18:56   ` [ofa-general] " Shirley Ma
2007-07-16 16:47     ` Roland Dreier
2007-07-15 12:26   ` Tziporet Koren
2007-07-16 16:42     ` Roland Dreier
2007-07-17 18:07   ` Roland Dreier
2007-07-17 20:43     ` Matt Leininger
2007-07-17 20:45       ` Roland Dreier
2007-07-18  6:36         ` Or Gerlitz
2007-07-17 21:44     ` Michael S. Tsirkin
2007-07-18  7:34       ` [ofa-general] " Tziporet Koren
2007-07-18  7:38         ` Michael S. Tsirkin
2007-07-18  8:48           ` Tziporet Koren
2007-07-18 16:16             ` Sean Hefty
2007-07-18 16:20               ` Roland Dreier

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