From owner-cvs-all Mon Nov 30 15:19:16 1998 Return-Path: Received: (from majordom@localhost) by hub.freebsd.org (8.8.8/8.8.8) id PAA01082 for cvs-all-outgoing; Mon, 30 Nov 1998 15:19:16 -0800 (PST) (envelope-from owner-cvs-all@FreeBSD.ORG) Received: from dingo.cdrom.com (ppp7.portal.net.au [202.12.71.107]) by hub.freebsd.org (8.8.8/8.8.8) with ESMTP id PAA01069; Mon, 30 Nov 1998 15:19:09 -0800 (PST) (envelope-from mike@dingo.cdrom.com) Received: from dingo.cdrom.com (LOCALHOST [127.0.0.1]) by dingo.cdrom.com (8.9.1/8.8.8) with ESMTP id PAA06127; Mon, 30 Nov 1998 15:12:08 -0800 (PST) (envelope-from mike@dingo.cdrom.com) Message-Id: <199811302312.PAA06127@dingo.cdrom.com> X-Mailer: exmh version 2.0.2 2/24/98 To: Poul-Henning Kamp cc: Peter Wemm , Mike Smith , cvs-committers@FreeBSD.ORG, cvs-all@FreeBSD.ORG Subject: Re: cvs commit: src/sys/kern kern_clock.c In-reply-to: Your message of "Mon, 30 Nov 1998 16:30:33 +0100." <12393.912439833@critter.freebsd.dk> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Date: Mon, 30 Nov 1998 15:12:05 -0800 From: Mike Smith Sender: owner-cvs-all@FreeBSD.ORG Precedence: bulk > >Why is repeating: > > > >calcru: negative time .... ... > >calcru: negative time .... > >[.. etc etc ...] > > > >over and over again better than doing this once: > > > >calcru: negative time .... > >WARNING: switching timecounter to slightly slower method. Set the sysctl > >'kern.timecounter.method' 1 at boot to make this permanent (see /etc/rc.conf). > > Because I want the system to be bloddy unstable, weird and generally > misbehaving, so that people actively have to acknowledge that it > is broken in some way (hw and/or sw). This is totally screwed. Are you familiar with the expression "fail safe"? We should *default* to the less efficient but functional method, and make the unreliable method _optional_. > >After all, we stop printing 'stray interrupt' messages after the first few > > Stray interrupts doesn't mean that your system is potentially hosed in > really interesting ways. No more or less than your timecounter code not dealing with reality indicating that anything is actually wrong. -- \\ Sometimes you're ahead, \\ Mike Smith \\ sometimes you're behind. \\ mike@smith.net.au \\ The race is long, and in the \\ msmith@freebsd.org \\ end it's only with yourself. \\ msmith@cdrom.com To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe cvs-all" in the body of the message