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From: lmb@vicom.com (Larry Blair)
Newsgroups: comp.dcom.modems,comp.unix.xenix
Subject: Re: Trailblazer Plus & disappointing throughput...
Keywords: throughput
Message-ID: <1990Feb7.011113.15033@vicom.com>
Date: 7 Feb 90 01:11:13 GMT
References: <1844@oneb.UUCP> <511168@nstar.UUCP>
Organization: Vicom Systems Inc., Fremont, CA
Lines: 16

In article <511168@nstar.UUCP> larry@nstar.UUCP (Larry Snyder) writes:
=> I am using a standard 8250-type UART, with no buffers (a'la 16550's)....
=> would appreciate any suggestions which would assist me in tweaking the system
=> and getting it up to speed....400-600 baud isn't acceptable, and I know that
=> the system is capable of more.....where should I begin?
=
=Make sure you are using UUCP spoofing in the modem, make sure the modem
=interface is locked at 19200, make sure you are using hardware flow control
=(if supported, if not use XON/XOFF but not BOTH), make sure your host is
=batching large bundles (less overhead than lots of small bundles).  

DON'T use XON/XOFF with UUCP spoofing!  The UUCP "g" protocol does not
allow for inband signalling.  My feeling is that Telebit should automatically
disable inband flow control when spoofing.
-- 
Larry Blair   ames!vsi1!lmb   lmb@vicom.com