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Date:      Tue, 14 Nov 1995 09:11:48 +0500 (GMT+0500)
From:      "Serge A. Babkin" <babkin@hq.icb.chel.su>
To:        hsu@cs.hut.fi (Heikki Suonsivu)
Cc:        current@FreeBSD.org, freebsd-current@freefall.FreeBSD.ORG
Subject:   Re: ISP state their FreeBSD concerns
Message-ID:  <199511140411.JAA19554@hq.icb.chel.su>
In-Reply-To: <199511131351.PAA20135@shadows.cs.hut.fi> from "Heikki Suonsivu" at Nov 13, 95 03:51:48 pm

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> 	   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



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