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Article #1422

Zilog Zeus ICP performance with Kermit and/or UUCP

#1422
From: Daniel A. Glasser
Date: Tue, 23 Feb 1988 21:43
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I have a Zilog Zeus System 8000 running Unix system III with
2 megabytes of memory and an ICP8/02 intelligent communications
board running the ICP kernal ITH V3.0.  I have noticed a serious
drop in terminal I/O real-throughput when using lines connected
to this board with kermit vs. using a line from the initial 8 on
the system board.  The ICP serial lines are DMA...  I would think
that the ICP lines would be more efficient.  I am using the lines
to talk to a 2400 baud modem.  Would this be caused by the DMA overhead
of single character I/O as performed by kermit?  I have a rather
primitive version of kermit (a modified version of the portable kermit
kernal in the 5th edition of the Kermit Protocol Manual.)  If this is so,
would running UUCP over one of the ICP lines be a mistake, or does
UUCP use block buffered input/output?

Any suggestions and/or sources for a better kermit (C-Kermit maybe?)
for this system will be appreciated.
-- 
Nobody at the place where I work	Daniel A. Glasser
knows anything about my opinions	...!ihnp4!chinet!dag
my postings, or me for that matter!	...!ihnp4!mwc!dag
					...!ihnp4!mwc!gorgon!dag
	One of those things that goes "BUMP!!! (ouch!)" in the night.
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Message-ID: <2784@chinet.UUCP>
Path: arc1-ca.pugleaf.net!utzoo!utgpu!water!watmath!clyde!att-cb!ihnp4!chinet!dag

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Path: arc1-ca.pugleaf.net!utzoo!utgpu!water!watmath!clyde!att-cb!ihnp4!chinet!dag
From: dag@chinet.UUCP (Daniel A. Glasser)
Newsgroups: comp.sys.misc,comp.misc
Subject: Zilog Zeus ICP performance with Kermit and/or UUCP
Keywords: Zeus Zilog ICP Intelligent Communications Perif.
Message-ID: <2784@chinet.UUCP>
Date: 23 Feb 88 21:43:34 GMT
Distribution: na
Organization: Chinet - Public Access UNIX, Chicago
Lines: 23