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Date: Thu, 3 Jul 2014 14:29:01 +0400
From: Slawa Olhovchenkov <slw@zxy.spb.ru>
To: Nikolay Denev <ndenev@gmail.com>
Subject: Re: FreeBSD iscsi target
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On Thu, Jul 03, 2014 at 10:35:55AM +0100, Nikolay Denev wrote:

> >> I found this white paper useful in understanding how this works :
> >> http://www.cisco.com/c/en/us/products/collateral/switches/nexus-3000-series-switches/white_paper_c11-726674.pdf
> >
> > In real world "Reality is quite different than it actually is".
> > http://www.cisco.com/c/en/us/products/collateral/switches/catalyst-6500-series-switches/white_paper_c11-696669.html
> >
> > See "Packet Path Theory of Operation. Ingress Mode".
> >
> 
> Interesting, however this seems like implementation specific detail,
> and not limitation of native 40Gbit ethernet.

I see some perfomance tests on solaris and 40G link.
In this test perfomance limited about 10Gbit per flow.
May be I found links to this test.

May be some NIC's implementation specific detail also limited
performance per flow.

> Still, it's something that one must be aware of (esp when dealing with
> Cisco gear :) )
> 
> I wonder why they are not doing something like this :
> http://blog.ipspace.net/2011/04/brocade-vcs-fabric-has-almost-perfect.html
> 
> --Nikolay