Date: Wed, 20 Jan 1999 10:14:31 -0700 From: Wes =?iso-8859-1?Q?Peters=D4?==?iso-8859-1?Q?=40=21=EA?= =?iso-8859-1?Q?=80?= =?iso-8859-1?Q?=EA?==?iso-8859-1?Q?=80=DD=E7?= =?iso-8859-1?Q?=805=EA?==?iso-8859-1?Q?=C0?==?iso-8859-1?Q?=EA?= <wes@softweyr.com> To: Ruslan Ermilov <ru@ucb.crimea.ua> Cc: John Saunders <john.saunders@nlc.net.au>, freebsd-stable@FreeBSD.ORG Subject: Re: Kernel PPP tty-level buffer overflows Message-ID: <36A60EF7.53A03129@softweyr.com> References: <Pine.LNX.3.95.990120081844.23817C-100000@nhj.nlc.net.au> <19990120101936.E16328@ucb.crimea.ua>
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Ruslan Ermilov wrote:
>
> On Wed, Jan 20, 1999 at 08:19:18AM +1100, John Saunders wrote:
> > Does anybody know how to fix the following.
> >
> > > XXX.XXX.XXX.XXX kernel log messages:
> > > > sio0: 815 more tty-level buffer overflows (total 4715)
> > > > sio0: 3093 more tty-level buffer overflows (total 7808)
>
> Read the sio(4) manpage, section ``BUGS''.
> Try to lower down your port's baud rate, say to 57600bps.
Or get a 16650 or 16750 based card. I have a dual 16C650 card
in my dial-in server, running two Impact IQ ISDN adapters at
115,200 bps, and have had no problems whatsoever. One of these
days I'm going to figure out how to crank them up to 230,400
bps.
If this is an internal modem, rip it out of your machine and give it
to somebody running Winblows who doesn't expect much in the way of
throughput. Most internal modems have a flawed pseudo-16550 UART.
--
"Where am I, and what am I doing in this handbasket?"
Wes Peters Softweyr LLC
http://www.softweyr.com/~softweyr wes@softweyr.com
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