linux-kernel - Re: [RFC][PATCH 1/1] cxgb3i: cxgb3 iSCSI initiator

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Message-Id: <20080811.141254.165409473.davem@davemloft.net>
Date:	Mon, 11 Aug 2008 14:12:54 -0700 (PDT)
From:	David Miller <davem@...emloft.net>
To:	rick.jones2@...com
Cc:	rdreier@...co.com, jgarzik@...ox.com, swise@...ngridcomputing.com,
	divy@...lsio.com, kxie@...lsio.com, netdev@...r.kernel.org,
	open-iscsi@...glegroups.com, michaelc@...wisc.edu,
	daisyc@...ibm.com, wenxiong@...ibm.com, bhua@...ibm.com,
	dm@...lsio.com, leedom@...lsio.com, linux-scsi@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: Re: [RFC][PATCH 1/1] cxgb3i: cxgb3 iSCSI initiator

From: Rick Jones <rick.jones2@...com>
Date: Mon, 11 Aug 2008 11:13:25 -0700

> David Miller wrote:
> > And I even wonder, these days, if you probably get %90 or more of the
> > gain these "optimized" iSCSI connections obtain from things like LRO.
> > And since LRO can be done entirely in software (although stateless
> > HW assistence helps), it is even a NIC agnostic performance improvement.
> 
> Probably depends on whether or not the iSCSI offload solutions are doing 
> zero-copy receive into the filecache?

That's a data placement issue, which also can be solved with
stateless offloading.
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