Date: Wed, 21 Apr 1999 23:24:15 +0800 From: Peter Wemm <peter@netplex.com.au> To: Jason Thorpe <thorpej@nas.nasa.gov> Cc: "William Woods" <wwoods@cybcon.com>, "Jordan K. Hubbard" <jkh@zippy.cdrom.com>, "Doug Rabson" <dfr@nlsystems.com>, "Alain G. Fabry" <fabry@coserve.org>, freebsd-alpha@FreeBSD.ORG Subject: Re: External modems on Alpha..... Message-ID: <19990421152417.11EB11F2A@spinner.netplex.com.au> In-Reply-To: Your message of "Wed, 21 Apr 1999 08:06:56 MST." <199904211506.IAA26011@lestat.nas.nasa.gov>
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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 th
is
> > 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 FreeBS
D
> 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).
I saw this yesterday and couldn't believe my eyes.. I wonder if it's
possible to use a soft or lazy masking system like on the i386.. Can
interrupts be individually masked if needed?
Cheers,
-Peter
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