*BSD News Article 8376


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From: vax@ccwf.cc.utexas.edu (Vax)
Newsgroups: comp.unix.bsd
Subject: SILO and data compressing modems
Keywords: com serial rs-232 SILO modem
Message-ID: <84488@ut-emx.uucp>
Date: 30 Nov 92 11:07:32 GMT
Sender: news@ut-emx.uucp
Organization: The University of Texas at Austin, Austin TX
Lines: 16

Okay, here's the scoop on my SILO problem.  Even though the modem is 2400
with MNP-5, which should not put it over 9600 bps (effective) in any
circumstances, and even though it has a large (7kbytes) buffer, it still
seems to outrun the 386bsd-0.1 setup at 9600bps on com1.  I'm not sure why
this is, but when I turn data compression off it works just dandy.
  Moral of the story: if you really need the extra 30 cps, use DOS.
(It peeves me that Unix always is just a wee bit less efficient than dos:
it hates non-fixed bps modems, some Unixers still use KERMIT and that lame
UUCP protocol (g?).  DOS has protocols that reach 99.8% efficiency
(tmodem, puma, zmodem to name a few))
  Just out of curiosity, does 386BSD's mail system support an 8-bit path,
or do we HAVE to uuencode everything?  Oh yeah, this applies to news, too.

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