Path: utzoo!utgpu!water!watmath!uunet!labrea!rutgers!noao!nud!mcdchg!chinet!tarkus!jcs From: jcs@tarkus.UUCP (John C. Sucilla) Newsgroups: unix-pc.general Subject: Re: achieving 19200 baud on the UNIX PC Summary: It works Keywords: 19200 baud console remote terminal Message-ID: <117@tarkus.UUCP> Date: 4 Jul 88 18:34:37 GMT References: <187@gizzmo.UUCP> <1060@umbc3.UMD.EDU> Reply-To: jcs@tarkus.UUCP (John C. Sucilla) Organization: tarkus -- Calumet City, IL. Lines: 25 In article <1060@umbc3.UMD.EDU> alex@umbc3.UMD.EDU (Alex S. Crain) writes: > I would be interested to see if two 3b1's could sustain 19Kb (or >higher) file transfers (uucp or whatever). Anybody ever tried? Well, for what it's worth my 3B1 (tarkus) has a TrailBlazer+ on tty002 and it's locked at 19200 between the modem and the machine. I just started talking csdev's 'Blazer (csdev is another 3B1) and the average throughput so far is 947 bytes per second. I'm not sure if Garry's 'Blazer is locked at 19200 like mine or if it's set up for 9600. On the other hand, tarkus gets it's news feed from ddsw1 (a Tele-386) with a 'Blazer set to answer at 19200. I just got the latest maps from Karl over there. The 2,176,135 byte xfer got here at 1031 bytes per second. Sending small files like mail shows even greater throughput. A 1500 byte file can be dumped into the 'Blazers buffer in one chunk and would show a througput of > 1500 bps. I think the highest number I've seen was a little over 1700 bytes/second. Therefore yes, the 3b1 can handle 19200 baud. The slower rates can be blamed on uucp overhead and Telebit turning the line around. BTW: 19200 is the max for the UNIX-PC, it'll never do 38K as is (Grrr). -- John "C". Sucilla, A silicon based life form. {ihnp4,chinet,ddsw1}!tarkus!jcs You have a better idea? Now's the time..