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Date: Wed, 17 Oct 2007 19:01:07 -0700
From: Julian Elischer <julian@elischer.org>
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To: Andrey Chernov <ache@nagual.pp.ru>
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Cc: arch@FreeBSD.ORG, Poul-Henning Kamp <phk@phk.freebsd.dk>,
	"Constantine A. Murenin" <cnst@FreeBSD.ORG>
Subject: Re: sensors fun..
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Andrey Chernov wrote:
> On Wed, Oct 17, 2007 at 06:20:26PM -0700, Julian Elischer wrote:
>>> As you can guess from the first couple of lines, measured will also
>>> answer as a HTTP server, so you can just point your browser at it,
>>> and see what all the sensors record or manipulate actuators.
>>> The protocol you see above, is trivally implemented in any language.
>>> Creating a graphical "control panel" for stuff in for instance Tk
>>> is trival.
>> actually I did almost EXACTLY that for Vicor, with tcl/tk and mbmon which 
>> can do something similar to what you showed above. Every machine had mbmon 
>> listening on port XXX and tcl/tk scanned them all and showed them 64 
>> machines to the page.
> 
> The same can be achieved in more simpler way by just reading/writing DEVFS 
> devices and not involves slow TCP/HTTP/tcl/etc path (some sensors may 
> needs very fast reaction, perhaps realtime).

hard to read /dev/xxx on another machine.

>