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Path: euryale.cc.adfa.oz.au!newshost.carno.net.au!harbinger.cc.monash.edu.au!munnari.OZ.AU!news.mel.connect.com.au!news.mira.net.au!news.vbc.net!news.leonardo.net!news.cyberport.com!news.goodnet.com!news.sgi.com!enews.sgi.com!news.mathworks.com!newsfeed.internetmci.com!in3.uu.net!tank.news.pipex.net!pipex!oleane!jussieu.fr!rain.fr!news.sprintlink.net!news-dc-9.sprintlink.net!helena.MT.net!nate From: nate@see.my.signature (Nate Williams) Newsgroups: comp.unix.bsd.freebsd.misc Subject: Re: 2.1.5-RELEASE sio silo overflows? Date: 4 Sep 1996 16:35:20 GMT Organization: SRI Intl. - Montana Operations Lines: 28 Message-ID: <50kb48$9ok@helena.MT.net> References: <50i54c$mq7@yama.mcc.ac.uk> Reply-To: "Nate Williams" <nate@sneezy.sri.com> NNTP-Posting-Host: trout.mt.sri.com In article <50i54c$mq7@yama.mcc.ac.uk>, Ian Pallfreeman <ip@mcc.ac.uk> wrote: >My home PC has recently joined my ever-growing collection of happy FreeBSD >boxes, with Linux banished to the backup tapes. Everything's groovy as I >expected, except I'm getting a whole slew of: > > Sep 3 21:29:55 clover /kernel: sio2: 4 more silo overflows (total 448) > >when using SLIP (dialing with dip). I'm using a 16550A: This is a 'known problem' with 2.1.5R. Basically, Bruce modified the driver to actually *report* overflows that weren't being reported in previous versions of FreeBSD. The solution is to either ignore them (I've been doing this), or modify sio.c to set the trigger level from 14 to 8 in the sources which should remove them at some interrupt cost. This was talked about a couple weeks ago in the mailing lists, and Bruce has no idea why I'm seeing them, since I have *real* 16550A's and my SCSI card isn't hogging the bus too long. In any case, I suspect my change to sio.c should do the trick, although I haven't rebooted with the new kernel to check yet. :) Nate -- nate@sri.com | Research Engineer, SRI Intl. - Montana Operations nate@trout.mt.sri.com | Loving life in God's country, the great state of work #: (406) 449-7662 | Montana (all the crazies are now in jail 'cept us home #: (406) 443-7063 | natives). - Fly fishing fanatic!