Path: utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!ncar!umigw!mthvax.cs.miami.edu!wb8foz
From: wb8foz@mthvax.cs.miami.edu (David Lesher)
Newsgroups: comp.sys.ibm.pc
Subject: Re: Terminal emulation programs for PC/XT at 19.2K
Summary: can real terminals handle it?
Keywords: terminal emulation, PC/XT
Message-ID: <1045@umigw.MIAMI.EDU>
Date: 11 Nov 89 02:49:58 GMT
References: <1974@cunixc.cc.columbia.edu> <560@ghidrah.tessi.UUCP> <1576@crdos1.crd.ge.COM> <2103@cunixc.cc.columbia.edu>
Sender: news@umigw.MIAMI.EDU
Reply-To: wb8foz@Mthvax.Miami.Edu (David Lesher)
Distribution: usa
Organization: NRK Clinic for habitual NetNews abusers
Lines: 31


About five years ago, I was tasked with flogging a wideband LAN to see
how well it would stand up on the load of some planned grapics
transfers.

I got some simple octal code from the local PDP-11 guru (made it up in
his head and dictated to me to punch in on the front panel--HONEST!)
that spat out stuff as fast as possible.  I ran around with a TEK 834
rs-232 test set and a stopwatch, and timed how long it took n megs of
data to get there.

The results surprised me. No text terminal in the lab could keep up. I
wish I could remember model numbers, but one was a AJ with a nice amber
display, and both 80/132 col modes. Another was the HP 26?? that was on
the cute pedestal. I think I also stole a VT-100.  ALL overflowed if
their flow controls were disabled. I could see the XOFFs coming back on
the 834. Maybe the scrolling took too long, but @ 9600 and 19.2, there
it was.

I ended up using the Tek graphics terminal for the test, which made me
VERY unpopular with the section whose project it was.  They wanted it
ALL the time. It had post speeds of up to 38.4 available.  It kept up
with the 19.2 just fine. Maybe it was the 80286 processer, and maybe it
was the $30,000 price tag.

Now, if only I could get one for reading news......
--
A host is a host & from coast to coast...wb8foz@mthvax.cs.miami.edu 
no one will talk to a host that's close..............(305) 255-RTFM
Unless the host (that isn't close)......................pob 570-335
is busy, hung or dead....................................33257-0335