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From: Ole-Hjalmar Kristensen
 <ole-hjalmar.kristensen@substitute_employer_here.com>
Newsgroups: comp.lang.ada
Subject: Re: TRON for AdaOS
Date: 17 Feb 2005 15:37:22 +0100
Organization: Sun Microsystems
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>>>>> "MAA" == Marius Amado Alves <amado.alves@netcabo.pt> writes:

    MAA> Primary TRON sites (in my understanding):
    MAA>     http://www.tron.org
    MAA>     http://www.sakamura-lab.org
    MAA>     http://www.personal-media.co.jp

    MAA> If your Japanese is, like mine, a bit rusty :-) check these items:

    MAA>     http://tronweb.super-nova.co.jp
    MAA>     http://www.linuxinsider.com/story/31855.html

    MAA> Regarding real-time  power and RTLinux,  this excerpt from  the latter
    MAA> item deserves spotlighting:


    MAA> "RTLinux switches tasks in milliseconds, while ITRON switches tasks in
    MAA> microseconds," he said. "RTLinux'  footprint is measured in megabytes;
    MAA> ITRON is measured in kilobytes."

I would be very surprised if "RTLinux switches tasks in milliseconds"
actually is true. On my system, (a vanilla Linux admittedly :
2.4.9-e.34smp #1 SMP ), task switching takes about 4.5 microseconds.

-- 
   C++: The power, elegance and simplicity of a hand grenade.