Date: Fri, 19 Sep 1997 20:45:55 -0400 (EDT) From: Clark Gaylord <gaylord@gaylord.async.vt.edu> To: mvh@netcom.com (Michael V. Harding) Cc: ceharris@vt.edu (Carl Harris), freebsd-stable@freebsd.org Subject: Re: silo overflows... Message-ID: <199709200045.UAA02854@gaylord.async.vt.edu> In-Reply-To: <199709171730.KAA00227@netcom1.netcom.com> from "Michael V. Harding" at "Sep 17, 97 10:30:41 am"
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Mike -- Well, I just moved my modem to sio2. Fired up X, did a bunch of 'scaping, ftpin, and X/Tk stuff and no silo overflows. I think we may have a weiner. Hope you have similar luck. ... and that mine holds :-) Clark Gaylord > It's possible that we have a similar situation. I'm running a generic > S3 Virge chip, but my modem is on sio2. The silo overrun can happen > when there is a long interrupt latency - and the S3 drivers may be > disabling interrupts. Not in general a problem. I moved my modem > connect to 56K and most of my problems have gone away, although this > is just a bandaid. > > I am, however, having video artifacts, which I never used to have. > Gargh. > > Thanks for your input, > > Mike Harding > > From: Clark Gaylord <gaylord@gaylord.async.vt.edu> > Date: Wed, 17 Sep 1997 00:22:26 -0400 (EDT) > X-Mailer: ELM [version 2.4ME+ PL31 (25)] > MIME-Version: 1.0 > Content-Type: text/plain; charset=US-ASCII > Content-Transfer-Encoding: 7bit > X-UIDL: da785a37a99dab659b933b8fbfbebca9 > > I have seen this a lot w/ 2.2.1+, but the problem seems to only happen > to me when I run X. So long as I do everything in telnet/vtty, all is > fine. My setup is: > Mylex MTI386 (DX33) > Adaptec 1542 > Diamond Stealth24 > 28.8 external modem > serial mouse > > I experience occassional mouse com port silo overflows and lots (hundreds) > of modem cort silo overflows. I changed my serial port twice, and nothing > worked. The other factoid I uncovered recently is possible incompatibilities > between sio3 and S3 video chipsets. I have not moved modem to sio2, though > this is something I plan to do. > > In general, though, silo overruns indicate interupt conflicts, faulty > hardware, don't they? > > -- > Clark K. Gaylord > Blacksburg, Virginia USA > cgaylord@vt.edu > gaylord@usit.net > > > I don't know if this is a 'stable' question, but I am getting silo > > overflows after upgrading to a K6 / Asus TX-97 combo and upgrading to > > -stable. Is there something different about this setup? Should I > > turn off bus mastering? Anyone else seen this? I would be surprised > > if the TX chipset was messed up. > > > > Also, how do I turn down the threshold in sio.c? I looked at the code > > but wasn't able to determine what to hack to set the threshold to 8 > > bytes. > > > > Thanks! > > > > Mike Harding > > > > > > > > > > > -- Clark K. Gaylord Blacksburg, Virginia USA cgaylord@vt.edu gaylord@usit.net
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