From owner-freebsd-questions Fri Jan 5 14:05:37 1996 Return-Path: owner-questions Received: (from root@localhost) by freefall.freebsd.org (8.7.3/8.7.3) id OAA06266 for questions-outgoing; Fri, 5 Jan 1996 14:05:37 -0800 (PST) Received: from silver.sms.fi (silver.sms.fi [194.111.122.1]) by freefall.freebsd.org (8.7.3/8.7.3) with SMTP id OAA06252 for ; Fri, 5 Jan 1996 14:05:28 -0800 (PST) Received: (from pete@localhost) by silver.sms.fi (8.6.12/8.6.9) id AAA25247; Sat, 6 Jan 1996 00:02:59 +0200 Date: Sat, 6 Jan 1996 00:02:59 +0200 Message-Id: <199601052202.AAA25247@silver.sms.fi> From: Petri Helenius To: Wes Santee Cc: questions@freebsd.org Subject: Thruput at 28.8 slower than 24.4. Huh? In-Reply-To: <199601040452.UAA03578@wsantee.oz.net> References: <199601040452.UAA03578@wsantee.oz.net> Sender: owner-questions@freebsd.org Precedence: bulk Wes Santee writes: > Okay, first my setup: > > When the receive speed of my modem is set to 24.4 - 26.6bps, > everything is smooth as silk. When I get a true 28.8 connection, > however, my throughput slows down to about 1/10th the speed it was > running at w/26.6bps or below. At 28.8, I'll get a burst of > something, then nothing for a couple seconds, then another burst, > etc. At 26.6 data just streams away. > > Any ideas from the software side what this might be before > suspecting hardware? > It's likely that your modem is clueless enough not to drop the rate when it really should but instead is experiencing high error rates at 28800 when it could get almost all it's data through with only a little lower rate. Pete