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Posting-Version: version B 2.10.1 6/24/83; site duke.UUCP
Path: utzoo!watmath!clyde!bonnie!akgua!mcnc!duke!rrt
From: rrt@duke.UUCP (Russell R. Tuck)
Newsgroups: net.micro.att
Subject: Re: 7300 Probs. - CT are you out there?
Message-ID: <6033@duke.UUCP>
Date: Mon, 29-Jul-85 11:22:09 EDT
Article-I.D.: duke.6033
Posted: Mon Jul 29 11:22:09 1985
Date-Received: Wed, 31-Jul-85 05:02:47 EDT
References: <1054@homxa.UUCP>
Reply-To: rrt@duke.UUCP (Russell R. Tuck)
Organization: Duke University
Lines: 27
Summary: 

In article <1054@homxa.UUCP> gritz@homxa.UUCP (R.SHARPLES) writes:
>	2) Why does the unixpc write to the screen so slowly when connected
>	   to a host at 9600.  I have logged into a vax (thru cu) through an lan
>	   (ungermann/bass) at 9600.  Still, characters appear on the screen
>	   just as slowly as at 1200.  I have checked and it is not that the
>	   vax is loaded down.
>
>The AT&T help people are aware of both problems but can not offer any help.

I have also experienced Problem 2, with an interesting twist:

I use a 7300 connected through its RS-232 port to a VAX 11/785 running 4.2BSD.
When I use the phone manager's terminal emulator to login on the VAX and cat 
a large file, the screen scrolls at normal 9600 baud speed.  However, when I 
use cu over the same line to login on the same VAX and cat the same file
(with the same low load average on the VAX and no background activity on the
7300), the lines appear much more slowly, at what appears to be 1200 baud.
I have done stty's on all the relavant ports (both machines), and they all say
the line is at 9600 baud.

The people on the AT&T support hotline could not reproduce this behavior on a
machine there and could give me no help.  Could I have an older release of cu
or some system routine which cu uses (and the phone manager does not), which 
performs simple I/O inefficiently? Could there be some hardware problem in my 
machine which affects cu, but NOT the phone manager's terminal emulator?

I am interested in any solution or idea that might lead to one.