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Article #580

Summary: UUCP: 64-byte packet -> 256-byte packet

#580
From: Roberto Arrocha
Date: Mon, 13 Apr 1992 18:06
58 lines
2442 bytes
Original Question
In order to reduce uucp communication overhead, and improve throughput,  
I've been told to increase packet size from 64-byte packets to 256-byte  
packets.

Any suggestions on how to set uucp to accomplish this?
Current setup: 040 NeXTcuce <-> Hayes ULTRA 9600 <-> UUNET (T2500)


Summary
Can't do it with standard UUCP, as offered by NeXT.
It seems that packet size is hardcoded in UUCP, and a code change /  
recompilation may be necessary.

Alternatives range from using Taylor & GNU UUCP (source code provided) to  
using Telebit modems, all of the above allow modifying packet size.


Answers / Suggestions

monty@proponent.com (Monty Solomon)
Replace your uucp software with Taylor uucp.  Version 1.03 was just  
released.
Another alternative is to replace your Hayes Ultra with a Telebit.  The  
Telebit has uucp protocol built-in and can pretend to be the other end of  
the uucp protocol.


ian@airs.com (Ian Lance Taylor)
So far as I know, you can't do it with the NeXT UUCP.  You can do it
with my UUCP package, if you like; several people are using it on the
NeXT.

This is my standard Taylor UUCP blurb.
[...]


bkr@drdhh.hanse.de (Bjoern Kriews)
Forget it with NeXT's standard uucico, it's hardcoded. There may be
a chance if you are called but not for outgoing calls.
Packetsize is agreed upon in the uucico startup phase.
With Taylor-UUCP you might have a chance but I am not sure.


jantypas@soft21.s21.com (John Antypas)
I use taylor-UUCP (GNU UUCP soon) and use its facilities on both ends. It  
allows protocol blocks anywhere from 32 to 4096 bytes.


shawn@marilyn.marilyn.mn.org (Shawn P. Stanley)
This can't be done by setting options.  The changes need to be made in the  
binary file.  I thought I saw a posting some time ago on how to do that  
with the uucico for the SCO Unix HDB, but I don't have a record of it.

Thaks to all that responded.
-- 
Roberto
NeXTmail: roberto@arrocha.charlotte.nc.us
Technical Details
Message-ID: <1992Apr13.180629.786@arrocha.charlotte.nc.us>
Path: arc1-ca.pugleaf.net!sparky!uunet!arrocha!roberto

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Complete Article Headers
Newsgroups: comp.sys.next.sysadmin
Path: arc1-ca.pugleaf.net!sparky!uunet!arrocha!roberto
From: roberto@arrocha.charlotte.nc.us (Roberto Arrocha)
Subject: Summary: UUCP: 64-byte packet -> 256-byte packet
Message-ID: <1992Apr13.180629.786@arrocha.charlotte.nc.us>
Keywords: UUCP packet
Sender: roberto@arrocha.charlotte.nc.us
Reply-To: roberto@arrocha.charlotte.nc.us
Organization: Roberto E. Arrocha
Date: Mon, 13 Apr 1992 18:06:29 GMT
Lines: 58