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Date: Thu, 06 Jun 2002 16:03:26 +0200
From: Peter =?ISO-8859-1?Q?W=E4chtler?= <pwaechtler@loewe-komp.de>
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To: Daniel Phillips <phillips@bonn-fries.net>
CC: Oliver Xymoron <oxymoron@waste.org>, Mark Mielke <mark@mark.mielke.cc>,
        linux-kernel <linux-kernel@vger.kernel.org>
Subject: Re: [ANNOUNCE] Adeos nanokernel for Linux kernel
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Daniel Phillips wrote:
> On Thursday 06 June 2002 10:52, Peter W?chtler wrote:
> 
>>Daniel Phillips wrote:
>>
>>>Our current block queue design would benefit a lot from the kind of
>>>thinking that would be required to make it realtime.
>>>
>>You know that spinning disks do some recalibrations?
>>
>>Whatever marketing tries to imply with "realtime volumes" - the
>>technology only tries to make better promises (think of AV disks
>>for better sustained rate).
>>
> 
> It's my impression that some do thermal recalibration and some don't:
> 
>    http://www.pctechguide.com/04disks.htm
>    "recalibration"
> 

> 
> The need to turn in reliable performance for multimedia apps seems
> to have made thermal calibration a thing of the past, but thanks for
> raising the issue.
> 

Ok, seems that I am a bit outdated (here) :-)

> 
>>LynxOS (now LynuxWorks) has some patents for priority based IO.
>>
> 
> Oh, more of those one-click realtime patents ;-)  Do you have any
> pointers?
> 

http://www.lynuxworks.com/products/whitepapers/patentedio.php3

In the upper right corner you can see the patent number. Try
a search for patent on this side.

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