From: Wolfgang Denk <wd@denx.de>
To: Roberto Spadim <roberto@spadim.com.br>
Cc: stefan.huebner@stud.tu-ilmenau.de, linux-raid@vger.kernel.org
Subject: Re: Optimize RAID0 for max IOPS?
Date: Fri, 21 Jan 2011 20:34:57 +0100 [thread overview]
Message-ID: <20110121193457.C7719D30268@gemini.denx.de> (raw)
In-Reply-To: <AANLkTiki_FfRrLtL3dMsrDLXeT8jNO0ndnTNpXk1OXMW@mail.gmail.com>
Dear Roberto,
In message <AANLkTiki_FfRrLtL3dMsrDLXeT8jNO0ndnTNpXk1OXMW@mail.gmail.com> you wrote:
> a good idea....
> why not start a opensource raid controller?
> what we need? a cpu, memory, power supply with battery or capacitor,
> sas/sata (disk interfaces), pci-express or another (computer
> interface)
> it don´t need a operational system, since it will only run one program
> with some threads (ok a small operational system to implement threads
> easly)
>
> we could use arm, fpga, intel core2duo, atlhon, xeon, or another system...
You could evenuse a processor dedicated for such a job, like a
PPC440SPe or PPC460SX or similar, which provide hardware-offload
capabilities for the RAID calculations. These are even supported by
drivers in mainline Linux.
But again, thee would not helpo to maximize IOPS - goal for
optimization has always been maximum sequential troughput only
(and yes, I know exactly what I'm talking about; guess where the
aforementioned drivers are coming from).
Best regards,
Wolfgang Denk
--
DENX Software Engineering GmbH, MD: Wolfgang Denk & Detlev Zundel
HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany
Phone: (+49)-8142-66989-10 Fax: (+49)-8142-66989-80 Email: wd@denx.de
I don't see any direct evidence ... but, then, my crystal ball is in
dire need of an ectoplasmic upgrade. :-) -- Howard Smith
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next prev parent reply other threads:[~2011-01-21 19:34 UTC|newest]
Thread overview: 38+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-01-18 21:01 Optimize RAID0 for max IOPS? Wolfgang Denk
2011-01-18 22:18 ` Roberto Spadim
2011-01-19 7:04 ` Wolfgang Denk
2011-01-18 23:15 ` Stefan /*St0fF*/ Hübner
2011-01-19 0:05 ` Roberto Spadim
2011-01-19 7:11 ` Wolfgang Denk
2011-01-19 8:18 ` Stefan /*St0fF*/ Hübner
2011-01-19 8:29 ` Jaap Crezee
2011-01-19 9:32 ` Jan Kasprzak
2011-01-19 7:10 ` Wolfgang Denk
2011-01-19 19:21 ` Wolfgang Denk
2011-01-19 19:50 ` Roberto Spadim
2011-01-19 22:36 ` Stefan /*St0fF*/ Hübner
2011-01-19 23:09 ` Roberto Spadim
2011-01-19 23:18 ` Roberto Spadim
2011-01-20 2:48 ` Keld Jørn Simonsen
2011-01-20 3:53 ` Roberto Spadim
2011-01-21 19:34 ` Wolfgang Denk [this message]
2011-01-21 20:03 ` Roberto Spadim
2011-01-21 20:04 ` Roberto Spadim
2011-01-24 14:40 ` CoolCold
2011-01-24 15:25 ` Justin Piszcz
2011-01-24 20:48 ` Wolfgang Denk
2011-01-24 21:57 ` Wolfgang Denk
2011-01-24 23:03 ` Dave Chinner
2011-01-25 7:39 ` Emmanuel Florac
2011-01-25 8:36 ` Dave Chinner
2011-01-25 12:45 ` Wolfgang Denk
2011-01-25 12:51 ` Emmanuel Florac
2011-01-24 20:43 ` Wolfgang Denk
2011-01-25 17:10 ` Christoph Hellwig
2011-01-25 18:41 ` Wolfgang Denk
2011-01-25 21:35 ` Christoph Hellwig
2011-01-26 7:16 ` Wolfgang Denk
2011-01-26 8:32 ` Stan Hoeppner
2011-01-26 8:42 ` Wolfgang Denk
2011-01-26 9:38 ` Christoph Hellwig
2011-01-26 9:41 ` CoolCold
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