From owner-freebsd-hackers Thu Nov 9 17:17:26 1995 Return-Path: owner-hackers Received: (from root@localhost) by freefall.freebsd.org (8.6.12/8.6.6) id RAA19370 for hackers-outgoing; Thu, 9 Nov 1995 17:17:26 -0800 Received: from nike.efn.org (garcia.efn.org [198.68.17.5]) by freefall.freebsd.org (8.6.12/8.6.6) with ESMTP id RAA19317 for ; Thu, 9 Nov 1995 17:17:05 -0800 Received: (from gurney_j@localhost) by nike.efn.org (8.6.11/8.6.9) id RAA27654; Thu, 9 Nov 1995 17:20:49 -0800 Date: Thu, 9 Nov 1995 17:20:41 -0800 (PST) From: John-Mark Gurney Reply-To: John-Mark Gurney To: User GEOFF cc: hackers@FreeBSD.ORG Subject: Re: I/O woes. In-Reply-To: Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-hackers@FreeBSD.ORG Precedence: bulk On Thu, 9 Nov 1995, User GEOFF wrote: > Hi guys, > > I have a couple of questions which I hope I'm posting to the right > place. In fact, of all the FreeBSD lists I joined, this seems to be the > most (only) active group. :) > > In any case... > > After doing my homework I decided to go with FreeBSD due to the fact that > it was reported to be one of the fastest x86 based UNIX's arround. I've > had numerous people on the ISP groups recommend it. The problem that I'm > having is with the sio[1234] devices. I'm loosing characters all over > the place and every one and a while I get big blats of garbage. It > sounds like a handshaking problem but I can't seem to egt hardware > handshaking going. This even happens at 9600 bps, although to a lessor > degree. take a look at /etc/rc.serial... there are a couple of other devices for the tty's that allow you to set the inital open state (ttyi*) and lock certain settings (ttyl*)... you use these to set the hardware handshaking... > My configuration is pretty standard. I'm using an older 486/33 with 16 > megs of RAM and ISA bus. The ports are all controlled by 16550s. Do I > have to do anything special to get them operating with the 16550s > properly? I've got one modem hooking me to the internet via 28.8 modem > and two dial-up 14.4 modems for user access. Kinda a micro ISP. ;) I usally transfer from my 28.8k and only use about 2-3% of the cpu... I'm running a i486/33 at 40mhz... w/ 8megs... so you shouldn't have any problems... also.. make sure the cables are good... > I'm running FreeBSD 2.0, which was the most current CDROM I could get. > Is this a know problem? Do I need more processing power to handle the > interupts? take a look at "systat -vmstat" this will give you a nice overview of whats happening on your system... TTYL... John-Mark gurney_j@efn.org Modem/FAX: (503) 683-6954 (FreeBSD Box) Live in Peace, destroy Micro$oft, support free software, run FreeBSD (unix) GCS/M/Sd#h+s+!gau-a--w++++vC+++++UF++++P---E---N++W---M--V--Y+t+5++G+b+D++ B----eu+h++!f++n---- CD5OUF++++.L-------2W.DM----N.9---NET2SP3s.2,4s.,4d.2,6---