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Date:      Wed, 6 Jan 1999 12:32:10 -0700
From:      Nate Williams <nate@mt.sri.com>
To:        "Matthew D. Fuller" <fullermd@futuresouth.com>
Cc:        Nate Williams <nate@mt.sri.com>, Heikki Suonsivu <hsu@clinet.fi>, kowkn@asia1.com.sg, freebsd-bugs@FreeBSD.ORG
Subject:   Re: i386/9341: tty-level buffer overflows
Message-ID:  <199901061932.MAA16917@mt.sri.com>
In-Reply-To: <19990106132502.B25289@futuresouth.com>
References:  <199901060451.UAA12400@hub.freebsd.org.newsgate.clinet.fi> <x2btkc7acq.fsf@katiska.clinet.fi> <199901061636.JAA13961@mt.sri.com> <19990106132502.B25289@futuresouth.com>

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> > [ Mods to sio values ]
> > 
> > > I do not understand why these values have stuck to be too small for ages,
> > > as most older hardware need this to be able to reliable communicate at
> > > higher speeds.
> > 
> > Hmm, I would have to disagree with a 486/66 running 4 full-time 33.6K
> > modems w/out ever whining about overflows.  At times we stress them hard
> > by downloading software from the remote ends to one another just for
> > fun.
> 
> I'll disagree with a 486/25 laptop running 1 19.2k hardwired SLIP
> connection that gets overflows anytime I do any real 'transfers'

I'll bet you have crappy UARTS that claim to be 16550's, but in fact are
some sort of clone that doesn't work well.  That UARTS on my laptop are
not real either, although I get about 57600 on it w/out problems.

And, a 486/25 is not exactly a speed daemon. :)



Nate

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