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Article #68

Re: Running MHS over Trailblazers

#68
From: Piers Lauder
Date: Wed, 16 Sep 1992 04:55
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In article <andrewm.716523480@condor> andrewm@assip.csasyd.oz.au (Andrew Moffat) writes:
 >  I'm looking for some advice on running MHSnet on Trailblazers. 
 >  
 >  We connect in FAST mode OK, and for small - medium sized files things fly 
 >  along. When large files (maybe > 500K or so) come over the link, things start
 >  going wrong. Our error count goes up and bytes/sec coming in goes down.
 >  After a minute or so the link disconnects (whether its due to the low speed
 >  or high error count I'm not sure).
 >  
 >  Our daemon params are;
 >  
 >  local="-not -D1024 -S800 -X1800"
 >  remote="-nit -D1024 -S800 -X1800"

Trailblazers in PEP mode ought to do particularly well on large messages.
We regularly see *overall* throughputs in the 1550 bps range when sending
news messages of ~300k or so. (The "-X1800" is overly optimistic :-) The 
"-S800" says to disconnect when the data throughput drops below 800 bps.

You don't say what the errors are -- so first thing to do is look in
your transport daemon log to see what the termination reason is.
(Use "netstatus <linkname>".)

Is your Trailblazer connected using RTS/CTS flow control, or XON/XOFF?
If the latter, then only files small enough to fit in the buffer will
work without error, since you don't specify byte `cooking' ("-CX").  
--

Computer Science, Sydney University, Madsen Bldg F09, Sydney NSW 2006
Phone: +61 2 692 3423				  Fax: +61 2 692 3838
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From: piers@basser.cs.su.oz.au (Piers Lauder)
Newsgroups: aus.acsnet
Subject: Re: Running MHS over Trailblazers
Message-ID: <1992Sep16.045547.17876@cs.su.oz.au>
Date: 16 Sep 92 04:55:47 GMT
Sender: news@cs.su.oz.au (News)
Reply-To: piers@cs.su.oz.au (Piers Lauder)
Distribution: aus
Organization: Basser Dept of Computer Science, University of Sydney, Australia
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