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Newsgroups: comp.os.386bsd.questions Path: sserve!newshost.anu.edu.au!munnari.oz.au!constellation!osuunx.ucc.okstate.edu!moe.ksu.ksu.edu!vixen.cso.uiuc.edu!uwm.edu!cs.utexas.edu!uunet!boulder!cnsnews!rintintin.Colorado.EDU!galbrait From: galbrait@rintintin.Colorado.EDU (GALBRAITH JOHN) Subject: Modem Performance (was Re: Any high speed modems that actually work?) Message-ID: <CEv090.A9D@cnsnews.Colorado.EDU> Sender: usenet@cnsnews.Colorado.EDU (Net News Administrator) Nntp-Posting-Host: rintintin.colorado.edu Organization: University of Colorado, Boulder References: <terry.750367146@uivlsisd.csl.uiuc.edu> <CErAuH.4FG@veda.is> Date: Wed, 13 Oct 1993 23:36:35 GMT Lines: 28 In article <CErAuH.4FG@veda.is>, Adam David <adam@veda.is> wrote: >Maybe so, but you get more for your money. This is assuming that you are >not restricting yourself to 14.4 kbps. I'm getting an average of around >2kB/s sending compressed files in both directions over SLIP from a pair >of ZyXEL 1496E+ modems. All I need now is decent fax and voice software :-) > < stuff deleted > > >-- >adam@veda.is I was wondering how you tune the system to get this kind of performance. I have a 14.4 Boca modem that only gets 1.3K per second maximum on compressed files (although I think the hardware compression is on anyway) using raw zmodem. (in one direction). This is at 3.2bis, 4.2 compression or whatever. (I assume that zmodem has less overhead than SLIP, but don't know for sure.) One problem is that I only have a 7 bit line. But still, 2K/s _both ways_ blows me away! I just upgraded to FreeBSD because I needed the new sio drivers. Before that, I could not do anything compute or disk intensive (like open a shell, read a directory) without trashing the zmodem transfer. john