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Article View: comp.os.linux.misc
Article #5

Slow 28.8 modem under linux

#5
From: pp001356
Date: Sat, 18 Nov 1995 07:33
27 lines
1755 bytes

I've got two nearly identical machines using linux (Slackware) and 
DOS/Windows.
The old machine has a Boca 14.4 internal modem that goes like a bat 
out of hell under linux or under Windows.  The new machine (differs 
from the old one in that it has 32 MB RAM [vs. 8MB for the old one])
has a 28.8 internal USR Sportster modem that goes even faster under 
Windows.  However, under Linux it's a dog.  I've checked by mailing 
myself a large file and seeing how long it takes to retrieve it under 
linux.  With the old machine it takes about 30 seconds.  With the new 
machine it takes 148 - 150 seconds.  I've run 11 tests of this modem 
now and only one result fell slightly outside that range (130 
seconds).  I've tried various strings.  All gave the same result.  
I've tried specifying 115,200 and 57,600 in the ppp-on script.  Same 
results.  (The old machine's script uses 38,400, but I haven't tried 
that on the new machine).  Other than that, both machines are set up 
identically, as far as I can tell.  Also, both were talking to the 
same modem at the same ISP during my tests.

Any advice much appreciated, whether it's a detailed solution, or 
just a suggestion on where I might find a solution.
Thanks in advance.


John Carroll
pp001356@interramp.com
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From: pp001356@interramp.com
Newsgroups: comp.os.linux.misc,comp.dcom.modems
Subject: Slow 28.8 modem under linux
Date: Sat, 18 Nov 95 00:33:42 PDT
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