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Date:      Wed, 4 Mar 1998 22:33:20 -0500
From:      dmaddox@scsn.net (Donald J. Maddox)
To:        John-Mark Gurney <gurney_j@resnet.uoregon.edu>, dmaddox@scsn.net
Cc:        Evan Champion <evanc@synapse.net>, Matthew Thyer <Matthew.Thyer@dsto.defence.gov.au>, Mike Smith <mike@smith.net.au>, shimon@simon-shapiro.org, current@FreeBSD.ORG
Subject:   Re: silo overflows (Was Re: 3.0-RELEASE?)
Message-ID:  <19980304223320.22976@scsn.net>
In-Reply-To: <19980304192622.24302@hydrogen.nike.efn.org>; from John-Mark Gurney on Wed, Mar 04, 1998 at 07:26:22PM -0800
References:  <053601bd47dd$6cedf300$c9252fce@cello.synapse.net> <19980304221012.62373@scsn.net> <19980304192622.24302@hydrogen.nike.efn.org>

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On Wed, Mar 04, 1998 at 07:26:22PM -0800, John-Mark Gurney wrote:
> Donald J. Maddox scribbled this message on Mar 4:
> > On Wed, Mar 04, 1998 at 09:21:37PM -0500, Evan Champion wrote:
> > > >This happens a lot as after several hours (2 or 3) of using
> > > >ijppp and XFree86 the count of FIFO overflows can be around 100.
> > > 
> > > 
> > > I have a Pentium Pro 200 with 16650's (and the 16650's are detected) and
> > > during a full install of FreeBSD over 128kbps ISDN (230.4kbps port speed) I
> > > would get around 700 FIFO overflows.  Someone would have to do a lot of
> > > convincing to get me to believe the driver is working properly when a
> > > machine like that can't handle a 128kbps datastream in single user mode...
> > > 
> > 
> > I had this same problem, and the following fix from John Dyson works
> > for me:
> 
> [patch deleted]
> 
> are you sure that it wasn't to remeove:
> sio%d: interrupt-level buffer overflow.
> messages?

Sorry, you are correct...  I was getting interrupt-level buffer
overflows, not silo overflows.  Mea culpa :-/

> 
> if this did remove the:
> sio%d: silo overflow.
> messages, then there is something wierd up with sio...  I'll take a look
> at the code, but none of my machines have reliably produced this message
> that wasn't traced to another problem (my bt946 scsi controler would keep
> interrupts disabled longer than two chars to be recieved at 115200,
> forcing the trigger level down to 8chars instead of 14chars fixed it for
> me)...
> 
> -- 
>   John-Mark Gurney                          Modem/FAX: +1 541 683 6954
>   Cu Networking					  P.O. Box 5693, 97405
> 
>   Live in Peace, destroy Micro$oft, support free software, run FreeBSD
> 	    Don't trust anyone you don't have the source for
> 
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