Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!sdd.hp.com!samsung!sol.ctr.columbia.edu!cica!iuvax!news!cartan!ndmath!nstar!larry
From: larry@nstar.uucp (Larry Snyder)
Newsgroups: comp.unix.i386
Subject: Re: ISC 2.2 SL/IP throughput?
Message-ID: <1990Aug28.140547.14767@nstar.uucp>
Date: 28 Aug 90 14:05:47 GMT
References: <25@astph.UUCP> <3694@wb3ffv.ampr.org> <26@astph.UUCP> <1990Aug23.160013.1199@scuzzy.mbx.sub.org>
Organization: Northern Star Communications, Ltd.
Lines: 14

src@scuzzy.mbx.sub.org (Heiko Blume) writes:

>can someone tell me what throughput i can expect with sl/ip over
>a modem connection with HST modems (14400bps)? we talk to the modems
>at 19200 and use hardware flow control (FAS with 16550 chips). we did
>a ftp and the throughput was ~0.2 KB/s on a 600KB file, which is unacceptable.
>did we do something wrong? (of course we did sldialup/attach 19200 ttyF01).

SlIP requires the use of duplex modems for best throughput, and the HST
is limited by the baud rate of the "back channel"
-- 
      Larry Snyder, Northern Star Communications, Notre Dame, IN USA 
            uucp: iuvax!ndmath!nstar!larry  -or-  larry@nstar
     Public Access Unix Site (219) 289-0282 (5 lines/PEP/HST/Hayes-V)