Multiple X users on a 386

[Garry M. Paxinos]

In article <198 at sunriv.UUCP> dickb at sunriv.UUCP (Dick Brown) writes:

   SunRiver has a way to add another X user to your 386 relatively
   inexpensively.  We offer an 800 X 600 color or grayscale
   capable terminal that connects to the 386 via fiber optic cable (no
   ethernet necessary).
   What you need is:
   1.  A LightAdapter, which is SunRiver's I/O board for either AT bus
       or microchannel; supports up to 4 terminals.
   2.  A cable, available in pre-terminated lengths from 25 to 1000
       feet.
   3.  A SunRiver terminal (FOS800).
   4.  If you're using Interactive 386/ix, you already have SunRiver
       support in the package.  If you're using SCO Open Desktop, 
       Developers can get Open Desktop drivers from SCO, or from
       SunRiver if not yet generally available from SCO.


We just completed an installation at a Nuclear Power Station using
4 SunRiver Display (for a total of 5 X servers including the host's
vga.)  The software (standard from Interactive) worked flawlessly.
However, I would recommend some serious horsepower to drive it since
the SunRiver are 'dumb' display and rely on the host's cpu to do
any drawing.  

Fortunately on this system only two X servers will be operational 
at any given time.  We put in a 25MHz '386 with 14MB, with upto
two servers the performance is resonable, with three servers it's
slow but acceptable, with all five it is unnusable (I will have
to admit we are doing some heavy math/communications in the
background as well... with no servers the idle time is 60% average
as reported by sar)

Take care,
Garry.
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