From owner-freebsd-current Mon Nov 13 20:30:57 1995 Return-Path: owner-current Received: (from root@localhost) by freefall.freebsd.org (8.6.12/8.6.6) id UAA22308 for current-outgoing; Mon, 13 Nov 1995 20:30:57 -0800 Received: from hq.icb.chel.su (icb-rich-gw.icb.chel.su [193.125.10.34]) by freefall.freebsd.org (8.6.12/8.6.6) with ESMTP id UAA22119 for ; Mon, 13 Nov 1995 20:30:00 -0800 Received: from localhost (babkin@localhost) by hq.icb.chel.su (8.6.5/8.6.5) id JAA19554; Tue, 14 Nov 1995 09:11:49 +0500 From: "Serge A. Babkin" Message-Id: <199511140411.JAA19554@hq.icb.chel.su> Subject: Re: ISP state their FreeBSD concerns To: hsu@cs.hut.fi (Heikki Suonsivu) Date: Tue, 14 Nov 1995 09:11:48 +0500 (GMT+0500) Cc: current@FreeBSD.org, freebsd-current@freefall.FreeBSD.ORG In-Reply-To: <199511131351.PAA20135@shadows.cs.hut.fi> from "Heikki Suonsivu" at Nov 13, 95 03:51:48 pm X-Mailer: ELM [version 2.4 PL23] Content-Type: text Content-Length: 994 Sender: owner-current@FreeBSD.org Precedence: bulk > Seems they feel hardware flow control doesn't work or isn't enabled > when it should be (or can't be) or both. This may actually be > an issue with the 16550 drivers not setting silo depth to a > reasonable level. Most of these guys use terminal servers for > the actual users where these local serial ports are used for UPS, > router control, serial printers, and other in-house controls. They > complain of seeing problems with lost data outbound when flow > control was in use, including during UUCP sessions. > > I have complained about this several times, but gave up after I realized > noone was listening. I have been including these in all our kernels: There was a bug in TTY line discipline (more precisely, in cblock allocation). Bruce Evans has fixed it in -current (and I think in -stable too) nearly a month ago. Serge Babkin ! (babkin@hq.icb.chel.su) ! Headquarter of Joint Stock Commercial Bank "Chelindbank" ! Chelyabinsk, Russia