linux-kernel - Re: [PATCH 00/16] raid acceleration and asynchronous offload api for 2.6.22

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Message-ID: <d8jy7k7rxmw.fsf@nygaard.ping.uio.no>
Date:	Wed, 02 May 2007 17:36:07 +0100
From:	ilmari@...ari.org (Dagfinn Ilmari Mannsåker)
To:	"Williams, Dan J" <dan.j.williams@...el.com>
Cc:	"Justin Piszcz" <jpiszcz@...idpixels.com>,
	"Nick Piggin" <nickpiggin@...oo.com.au>, <neilb@...e.de>,
	<akpm@...ux-foundation.org>,
	"Leech, Christopher" <christopher.leech@...el.com>,
	<linux-kernel@...r.kernel.org>, <linux-raid@...r.kernel.org>
Subject: Re: [PATCH 00/16] raid acceleration and asynchronous offload api for 2.6.22

"Williams, Dan J" <dan.j.williams@...el.com> writes:

>> From: Justin Piszcz [mailto:jpiszcz@...idpixels.com]
>> I have not been following this closely, must you have an
>> CONFIG_INTEL_IOP_ADMA piece of hardware and/or chipset to use this
>> feature or can regular desktop users take hold of it as well?
>> 
> Currently this feature is available on the iop series of processors,
> e.g. http://www.intel.com/design/iio/iop348.htm
>
> And there is a driver in the works to support the 440spe platform
> (http://marc.info/?l=linux-raid&m=117400143317440&w=2)
>
> Desktops currently take advantage of architecture specific SIMD
> instructions to accelerate xor calculations.

How about hard drive controllers with RAID accelleration features (but
not full hardware RAID capability) such as the Promise SX4
(http://linux-ata.org/faq-sata-raid.html#sx4)?

-- 
ilmari
"A disappointingly low fraction of the human race is,
 at any given time, on fire." - Stig Sandbeck Mathisen
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