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From: daveb@llama.rtech.UUCP (Dave Brower)
Newsgroups: comp.sys.att
Subject: uucp/kermit etc. serial i/o throughput.
Message-ID: <1464@rtech.UUCP>
Date: Mon, 7-Dec-87 23:31:21 EST
Article-I.D.: rtech.1464
Posted: Mon Dec  7 23:31:21 1987
Date-Received: Sun, 13-Dec-87 11:33:20 EST
Sender: news@rtech.UUCP
Reply-To: daveb@rtech.UUCP (Dave Brower)
Distribution: na
Organization: Relational Technology, Inc. Alameda, CA
Lines: 18
Summary: 500 chars/sec limit?

When I run uucp/kermit at 9600 baud between my 7300 and another machine,
about the best throughput I can get is around 500 chars/sec, or ~4800
effective baud at 9 bits/char.  Curiously, if I have two channels
running between the two machines (using a combo card), _each_ will run
500 c/s.

Has anyone got any ideas on how to improve this?  What limit am I
running into?  Since I do backups from the 7300 to the other machine,
and it take about 20 hours to do one with this throughput, even marginal
gains would help.

(If necessary I can write my own transfer software using VMIN/VTIME
stuff.  Is it worth the effort?)

Thanks,
-dB
"I don't care what you say, as long as you spell my name right."
{amdahl, cbosgd, mtxinu, ptsfa, sun}!rtech!daveb daveb@rtech.uucp