From owner-freebsd-questions Wed Jan 17 11:07:19 1996 Return-Path: owner-questions Received: (from root@localhost) by freefall.freebsd.org (8.7.3/8.7.3) id LAA28521 for questions-outgoing; Wed, 17 Jan 1996 11:07:19 -0800 (PST) Received: from mailgate.ericsson.se (mailgate.ericsson.se [130.100.2.2]) by freefall.freebsd.org (8.7.3/8.7.3) with SMTP id LAA28515 for ; Wed, 17 Jan 1996 11:07:09 -0800 (PST) Received: from egg.lmc.ericsson.se (egg.lmc.ericsson.se [142.133.32.1]) by mailgate.ericsson.se (8.6.11/1.0) with SMTP id UAA06918; Wed, 17 Jan 1996 20:06:46 +0100 Received: from chicago.lmc.ericsson.com (chicago.lmc.ericsson.se) by egg.lmc.ericsson.se (4.1/LME-2.2) id AA27804; Wed, 17 Jan 96 14:06:43 EST Received: by chicago.lmc.ericsson.com (SMI-8.6/SMI-SVR4) id OAA21823; Wed, 17 Jan 1996 14:05:48 -0500 Date: Wed, 17 Jan 1996 14:05:43 -0500 (EST) From: Samy Touati X-Sender: lmcsato@chicago To: Barnacle Wes Cc: questions@FreeBSD.org Subject: Re: delays in ppp solved In-Reply-To: <199601161717.KAA08693@intele.net> Message-Id: Mime-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-questions@FreeBSD.org Precedence: bulk On Tue, 16 Jan 1996, Barnacle Wes wrote: > On Mon, 15 Jan 1996, Samy Touati wrote: > % The problem was the VJ compression. > % The site where I was connecting seems to support the VJ compression but > % for an unknown reason there was a buffering problem (probably due to a > % conflict between the modem compression scheme and the VJ one). After > % disabling the compression for the ppp driver everything worked like a charm. > > > Aha! When I first started with SLIP, then PPP, one of the cardinal > rules given to me by Terry Lambert was "turn off modem compression > completely." Reasons for this edict I've garnered over the years include: > > 3. Modem compression, as you have noticed, often interferes with VJ > compression used in SLIP and PPP implementations. > > 2. Modem compression often interferes with, and lengthens transfer of, > compressed files such as .gz and .jpg. > > 1. Modem compression slows down turn-around time -- terrible for > interactive sessions. > > Anyone else care to expand this to a "Top Ten"? > Yes but if you turn off the compression on one modem, shouldn't you also turn it off no the remote modem as well? What's better VJ compression or modem compression? Samy