From: "Bryan O'Sullivan" <bos@pathscale.com>
To: "Michael S. Tsirkin" <mst@mellanox.co.il>
Cc: rolandd@cisco.com, gregkh@suse.de, akpm@osdl.org,
davem@davemloft.net, linux-kernel@vger.kernel.org,
openib-general@openib.org
Subject: Re: [openib-general] [PATCH 0 of 20] [RFC] ipath driver - another round for review
Date: Fri, 10 Mar 2006 08:02:16 -0800 [thread overview]
Message-ID: <1142006537.29925.13.camel@serpentine.pathscale.com> (raw)
In-Reply-To: <20060310153559.GA12778@mellanox.co.il>
On Fri, 2006-03-10 at 17:35 +0200, Michael S. Tsirkin wrote:
> Two questions on this
> 1. It is not standard ethernet nor standard IP over Infiniband either, is it?
Correct.
> Is there some documentation on the wire protocol that you use?
No, but the encapsulation is very simple and easy to figure out from
reading the code.
> Is it pathscale specific?
It doesn't have to be.
> 2. Are there practical reasons why you get lower latency and higher
> bandwidth with this than with IPoIB?
The principal reason is that we haven't had time to pay attention to
IPoIB performance yet. The ipath_ether driver was developed before
IPoIB was usable for any real work.
> If there are optimizations, can they not be added to the standard, common
> IP over IB driver?
That's certainly our intention. It's simply a matter of finding the
time for it.
<b
next prev parent reply other threads:[~2006-03-10 16:02 UTC|newest]
Thread overview: 43+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-03-10 0:35 Bryan O'Sullivan
2006-03-10 0:35 ` [PATCH 1 of 20] ipath - core driver header files Bryan O'Sullivan
2006-03-10 0:35 ` [PATCH 2 of 20] ipath - core device driver Bryan O'Sullivan
2006-03-10 0:35 ` [PATCH 3 of 20] ipath - copy and send routines for sending an skb Bryan O'Sullivan
2006-03-10 0:35 ` [PATCH 4 of 20] ipath - support for HyperTransport devices Bryan O'Sullivan
2006-03-10 0:35 ` [PATCH 5 of 20] ipath - support for PCI Express devices Bryan O'Sullivan
2006-03-10 0:35 ` [PATCH 6 of 20] ipath - chip initialisation code Bryan O'Sullivan
2006-03-10 0:35 ` [PATCH 7 of 20] ipath - misc driver support code Bryan O'Sullivan
2006-03-10 0:35 ` [PATCH 8 of 20] ipath - sysfs support for core driver Bryan O'Sullivan
2006-03-10 1:11 ` Greg KH
2006-03-10 5:09 ` Bryan O'Sullivan
2006-03-05 3:08 ` Pavel Machek
2006-03-10 6:37 ` Greg KH
2006-03-10 14:59 ` Roland Dreier
2006-03-10 15:08 ` [openib-general] " Hal Rosenstock
2006-03-10 16:54 ` Greg KH
2006-03-10 17:05 ` Bryan O'Sullivan
2006-03-10 0:35 ` [PATCH 9 of 20] ipath - char devices for diagnostics and lightweight subnet management Bryan O'Sullivan
2006-03-10 0:45 ` Roland Dreier
2006-03-10 0:47 ` Bryan O'Sullivan
2006-03-10 0:52 ` Roland Dreier
2006-03-10 0:35 ` [PATCH 10 of 20] ipath - support for userspace apps using core driver Bryan O'Sullivan
2006-03-10 0:35 ` [PATCH 11 of 20] ipath - layering interfaces used by higher-level driver code Bryan O'Sullivan
2006-03-10 0:35 ` [PATCH 12 of 20] ipath - infiniband header files Bryan O'Sullivan
2006-03-10 0:35 ` [PATCH 13 of 20] ipath - infiniband UC and UD protocol support Bryan O'Sullivan
2006-03-10 0:35 ` [PATCH 14 of 20] ipath - infiniband RC " Bryan O'Sullivan
2006-03-10 0:35 ` [PATCH 15 of 20] ipath - misc infiniband code, part 1 Bryan O'Sullivan
2006-03-10 0:35 ` [PATCH 16 of 20] ipath - misc infiniband code, part 2 Bryan O'Sullivan
2006-03-10 0:35 ` [PATCH 17 of 20] ipath - infiniband verbs support Bryan O'Sullivan
2006-03-10 0:35 ` [PATCH 18 of 20] ipath - kbuild infrastructure Bryan O'Sullivan
2006-03-13 18:10 ` Adrian Bunk
2006-03-13 18:38 ` Robert Walsh
2006-03-13 19:24 ` Bryan O'Sullivan
2006-03-13 19:36 ` Sam Ravnborg
2006-03-13 19:39 ` Bryan O'Sullivan
2006-03-10 0:35 ` [PATCH 19 of 20] ipath - integrate driver into infiniband " Bryan O'Sullivan
2006-03-10 0:35 ` [PATCH 20 of 20] ipath - ethernet emulation driver Bryan O'Sullivan
2006-03-10 15:35 ` [openib-general] [PATCH 0 of 20] [RFC] ipath driver - another round for review Michael S. Tsirkin
2006-03-10 16:02 ` Bryan O'Sullivan [this message]
2006-03-10 17:48 ` Grant Grundler
2006-03-10 17:54 ` Bryan O'Sullivan
2006-03-10 22:30 ` Grant Grundler
2006-03-11 4:20 ` Bryan O'Sullivan
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