Date: Wed, 21 Apr 1999 20:07:20 +0100 (BST) From: Doug Rabson <dfr@nlsystems.com> To: Jason Thorpe <thorpej@nas.nasa.gov> Cc: William Woods <wwoods@cybcon.com>, "Jordan K. Hubbard" <jkh@zippy.cdrom.com>, "Alain G. Fabry" <fabry@coserve.org>, freebsd-alpha@FreeBSD.ORG Subject: Re: External modems on Alpha..... Message-ID: <Pine.BSF.4.05.9904212006330.85882-100000@herring.nlsystems.com> In-Reply-To: <199904211506.IAA26011@lestat.nas.nasa.gov>
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On Wed, 21 Apr 1999, Jason Thorpe wrote: > On Wed, 21 Apr 1999 00:02:01 -0700 > "William Woods" <wwoods@cybcon.com> wrote: > > > OK.....I am getting a crap load oF "silo overflows" when connected to the > > net. I am useing a external Hayes Acura 33/56k fax-modem. I am guessing this > > is a serial port problem, but am not sure. I have this modem attached to > > /dev/cuaa0 (com1). > > I doubt it's a serial port problem. It's more likely a problem of the FreeBSD > kernel not reasonably coping witht he fact that all device interrupts come > in at the same interrupt level on the Alpha (so network and disk controller > interrupts block serial port reception). How does the NetBSD kernel cope with this problem on the alpha? I can't see anything obvious in my copy of the source but it is somewhat dated. -- Doug Rabson Mail: dfr@nlsystems.com Nonlinear Systems Ltd. Phone: +44 181 442 9037 To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-alpha" in the body of the message
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