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Date:      Fri, 19 Feb 1999 18:15:20 -0500 (EST)
From:      Howard Goldstein <hgoldste@bbs.mpcs.com>
To:        gnats-admin@FreeBSD.org, freebsd-bugs@FreeBSD.org
Subject:   Re: kern/10166: panic during heavy sio i/o;no coproc; vesa+vm86
Message-ID:  <14029.61576.222727.276008@penny.south.mpcs.com>
In-Reply-To: <199902192020.MAA63973@freefall.freebsd.org>
References:  <19990219201111.CD5F911764@hub.freebsd.org> <199902192020.MAA63973@freefall.freebsd.org>

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I really suspect this is due to some interaction between the
"tty-level buffer overrun" error message handling.  

I have numerous instances of this:


login: sio0: 727 more tty-level buffer overflows (total 727)
sio0: 786 more tty-level buffer overflows (total cu: Got hangup signal




on my console.

Taking RS_IBUFSIZE up to 4096 from 256 seems to be much more 
effective a workaround than the one I reported earlier today in that
it hasn't yet failed....IClearly though the underlying problem still
exists and this will probably only work for a little while...


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