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Date:      Wed, 20 Jan 1999 10:19:36 +0200
From:      Ruslan Ermilov <ru@ucb.crimea.ua>
To:        John Saunders <john.saunders@nlc.net.au>
Cc:        freebsd-stable@FreeBSD.ORG
Subject:   Re: Kernel PPP tty-level buffer overflows
Message-ID:  <19990120101936.E16328@ucb.crimea.ua>
In-Reply-To: <Pine.LNX.3.95.990120081844.23817C-100000@nhj.nlc.net.au>; from John Saunders on Wed, Jan 20, 1999 at 08:19:18AM %2B1100
References:  <Pine.LNX.3.95.990120081844.23817C-100000@nhj.nlc.net.au>

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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)
> 
> System is...
> 
> FreeBSD XXX.XXX.XXX.XXX 2.2.8-STABLE FreeBSD 2.2.8-STABLE #0: Sat Jan 16 13:49:15 EST 1999
> root@XXX.XXX.XXX.XXX:/usr/src/sys/compile/MONSTER  i386
> 
> Modem info is...
> Device:		/dev/cuaa0
> dmesg:		sio0 at 0x3f8-0x3ff irq 4 on isa
> dmesg:		sio0: type 16550A
> speed:		115200bps
> carrier:	Jan 20 07:02:47 XXX chat[888]: CARRIER 54000
> 

Hi!

Read the sio(4) manpage, section ``BUGS''.
Try to lower down your port's baud rate, say to 57600bps.

BR,
-- 
Ruslan Ermilov		Sysadmin and DBA of the
ru@ucb.crimea.ua	United Commercial Bank
+380.652.247.647	Simferopol, Ukraine

http://www.FreeBSD.org	The Power To Serve
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