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Date:      Wed, 7 May 1997 08:43:59 -0500 (CDT)
From:      Bruce Albrecht <bruce@zuhause.mn.org>
To:        Michael Smith <msmith@atrad.adelaide.edu.au>
Cc:        freebsd-current@FreeBSD.ORG
Subject:   Re: Excessive tty-level buffer overflows
Message-ID:  <199705071343.IAA00221@zuhause.mn.org>
In-Reply-To: <199705070503.OAA18220@genesis.atrad.adelaide.edu.au>
References:  <199705070407.XAA14409@zuhause.mn.org> <199705070503.OAA18220@genesis.atrad.adelaide.edu.au>

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Michael Smith writes:
 > Bruce Albrecht stands accused of saying:
 > > In a five minute period while running uucp via an external sportster
 > > 33K modem at 57.6 KB on /dev/cuaa1, I received over 123,000 tty-level
 > > buffer overflows.  This is a dual CPU Pentium Pro Tyan ATX 1668,
 > > running in single CPU mode.  What does this mean?  Is it a shoddy
 > > 16550 emulation?  My kernel is from Saturday, or thereabouts.
 > 
 > Please read the sio(4) manpage, which explains what a tty-level
 > overflow is.
 > 
 > I don't think it's the serial hardware, but you may have other
 > problems.

True.  But even though I was running a make world at the time, I don't
think a Pentium Pro should not have been able to handle UUCP traffic
at 57.6K.



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