*BSD News Article 26961


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Newsgroups: comp.os.386bsd.questions
Path: sserve!newshost.anu.edu.au!munnari.oz.au!news.Hawaii.Edu!ames!decwrl!decwrl!sdd.hp.com!vixen.cso.uiuc.edu!howland.reston.ans.net!xlink.net!subnet.sub.net!flatlin!bad
From: bad@flatlin.ka.sub.org (Christoph Badura)
Subject: Re: [NetBSD 0.9] Q: SLIP at 38400 => "com1: silo overflow"
Date: Sat, 5 Feb 1994 20:39:21 GMT
Message-ID: <CKrqpM.Kny@flatlin.ka.sub.org>
References: <CKJHL2.w9@inesc.pt>
Organization: Guru Systems/Funware Department
Lines: 26

In <CKJHL2.w9@inesc.pt> werner@inesc.pt (Werner Vogels) writes:
>I run a slip line between my home and work over a 14.4K v42bis modem,
>with the settings on both sides to 38400 bps.

>whenever I produce some reasonable traffic, I keep getting the "silo overflow"
>messages on the related com port.

We're running SLIP on a 386SX-16 with 4MB run over a 19.2K V.42bis
modem with the serial port locked at 38400.

We only get silo overflows when a program starts up.  It seems like
the wd driver blocks the serial interrupts to long.  But I haven't
investigated this since I have more important work to do. :-)

>It seem to have some impact on the performance
>but then I just could be imagening that. Is there a way to avoid the error
>situtation. 

From what I've deduced so far one would have to hack the kernel or buy
a faster machine, of course.

-- 
Christoph Badura	bad@flatlin.ka.sub.org		+49 721 606137

Es genuegt nicht, keine Gedanken zu haben;
man muss auch unfaehig sein, sie auszudruecken.  - Karl Kraus