Return to BSD News archive
Path: euryale.cc.adfa.oz.au!newshost.carno.net.au!harbinger.cc.monash.edu.au!news.mel.connect.com.au!munnari.OZ.AU!news.ecn.uoknor.edu!feed1.news.erols.com!hunter.premier.net!news.mathworks.com!EU.net!usenet2.news.uk.psi.net!uknet!usenet1.news.uk.psi.net!uknet!dispatch.news.demon.net!demon!awfulhak.demon.co.uk!awfulhak.demon.co.uk!awfulhak.demon.co.uk!not-for-mail
From: brian@anorak.utell.net (Brian Somers)
Newsgroups: comp.unix.admin,comp.protocols.ppp,comp.unix.questions,comp.unix.bsd.freebsd.misc,comp.unix.bsd.netbsd.misc
Subject: Re: Best Unix for SLIP/PPP Server- Best Reliability/Cost?
Date: 19 Nov 1996 12:58:32 -0000
Organization: Coverform Ltd.
Lines: 20
Sender: brian@awfulhak.demon.co.uk
Message-ID: <56sato$21u@anorak.utell.net>
References: <56cfhc$h8b@access5.digex.net> <56dl8p$rje@panix2.panix.com>
<56igd8$if@anorak.coverform.lan> <56le6q$2c6@panix2.panix.com>
<56m0bb$qiq@nntp1.best.com> <56mqce$221@samba.rahul.net>
Reply-To: brian%anorak.coverform.lan@awfulhak.demon.co.uk
NNTP-Posting-Host: anorak.coverform.lan
X-NNTP-Posting-Host: awfulhak.demon.co.uk
Mime-Version: 1.0
Content-Type: text/plain; charset=us-ascii
X-Newsreader: knews 0.9.8
Xref: euryale.cc.adfa.oz.au comp.unix.admin:50615 comp.protocols.ppp:15955 comp.unix.questions:91553 comp.unix.bsd.freebsd.misc:31255 comp.unix.bsd.netbsd.misc:4896
In article <56mqce$221@samba.rahul.net>,
dhesi@ether.rahul.net writes:
: In <56m0bb$qiq@nntp1.best.com> dillon@flea.best.net (Matt Dillon) writes:
:
:> They are (or should) still be interrupts, but possibly fixed-period
:> interrupts. i.e. one interrupt per millisecond if data is present...
:> or something like that. This isn't really polled, but it does allow
:> 486/pentium caches to work better in terms of taking the load.
:
: If a timer interrupt invokes a routine that polls a non-interrupt-
: causing device, is this polled I/O or interrupt-driven I/O?
It's the worst sort of polled IO. You'd be better off triggering the poll
via a kernel callout.
--
Brian <brian%anorak.coverform.lan@awfulhak.demon.co.uk>
<http://www.awfulhak.demon.co.uk/>
Don't _EVER_ lose your sense of humour....
.