home
***
CD-ROM
|
disk
|
FTP
|
other
***
search
/
Columbia Kermit
/
kermit.zip
/
newsgroups
/
misc.19951130-19960209
/
000006_news@columbia.edu_Fri Dec 1 14:48:17 1995.msg
< prev
next >
Wrap
Internet Message Format
|
2020-01-01
|
3KB
Received: from apakabar.cc.columbia.edu by watsun.cc.columbia.edu with SMTP id AA27695
(5.65c+CU/IDA-1.4.4/HLK for <kermit.misc@watsun>); Fri, 1 Dec 1995 09:48:27 -0500
Received: (from news@localhost) by apakabar.cc.columbia.edu (8.6.12/8.6.12) id JAA16087 for kermit.misc@watsun; Fri, 1 Dec 1995 09:48:23 -0500
Path: news.columbia.edu!watsun.cc.columbia.edu!fdc
From: fdc@watsun.cc.columbia.edu (Frank da Cruz)
Newsgroups: comp.protocols.kermit.misc
Subject: Re: set speed 57600
Date: 1 Dec 1995 14:48:17 GMT
Organization: Columbia University
Lines: 56
Message-Id: <49n4jh$fmi@apakabar.cc.columbia.edu>
References: <49i3ru$37t@linus.mitre.org>
Nntp-Posting-Host: watsun.cc.columbia.edu
Apparently-To: kermit.misc@watsun.cc.columbia.edu
In article <49i3ru$37t@linus.mitre.org>, Jeff Heim <jheim@mitre.org> wrote:
: I'm trying to live dangerously and transfer
: a file at 57600 over a Microcom 28.8 modem.
: I'm using c-kermit 5a(190) on an Alpha running
: VMS but when I do the kermit set speed command
: I get: ?No keywords match - 57600.
:
Are you dialing out from VMS or dialing into it?
If you are dialing into it, this should not be an
issue.
: I've set the local terminal speed to 57600
: and can get connected to the remote computer
: at the higher baud rate outside of kermit.
:
: Is there anything I can do to try the higher
: baud rate?
:
Let's assume you are dialing out from VMS. In that
case, the problem is that C-Kermit does not believe
that VMS supports 57600 bps as a valid speed. In fact,
until recently, VMS did not support any speeds above
19200. Nor did it support RTS/CTS flow control.
What happens if you do this? --
Before starting Kermit, tell VMS to:
set term txa2 /speed=57600 /perm
Then start Kermit, type "show comm" and see what it says
about the speed.
: A side note. Kermit works fine at 38400 and
: I get decent performance (~2300 CPS, 59% efficiency)
: using 1 window and 3000 byte packet length transfering
: a large (900,000 byte) binary file. However, when I use
: more than 1 window performance gets really bad (13% efficiency,
: 480 CPS)
:
That's no doubt because of buffering and flow control deficiencies
in your setup -- the terminal server and/or VMS itself. Buffering
can be improved in SYSGEN or AUTOGEN. See the CKVINS.DOC file for
lots of information about this.
Until you beef up the VMS and/or terminal server configuration,
you're not going to get better performance no matter what your
communication speed is.
: I'm happy with the 38400 performance, but wouldn't mind
: trying the higher speed... BTW - I think Kermit is wonderful
: and I did BUY THE BOOK. I also checked the FAQ.
:
Thanks * 2.
- Frank