From owner-freebsd-current Tue Mar 18 10:33:37 2003 Delivered-To: freebsd-current@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 5AFB237B401 for ; Tue, 18 Mar 2003 10:33:36 -0800 (PST) Received: from freebie.xs4all.nl (freebie.xs4all.nl [213.84.32.253]) by mx1.FreeBSD.org (Postfix) with ESMTP id 6E7FA43F93 for ; Tue, 18 Mar 2003 10:33:32 -0800 (PST) (envelope-from wkb@freebie.xs4all.nl) Received: from freebie.xs4all.nl (localhost [127.0.0.1]) by freebie.xs4all.nl (8.12.8/8.12.8) with ESMTP id h2IIX6jl041212; Tue, 18 Mar 2003 19:33:06 +0100 (CET) (envelope-from wkb@freebie.xs4all.nl) Received: (from wkb@localhost) by freebie.xs4all.nl (8.12.8/8.12.8/Submit) id h2IIX5hW041207; Tue, 18 Mar 2003 19:33:05 +0100 (CET) Date: Tue, 18 Mar 2003 19:33:05 +0100 From: Wilko Bulte To: Poul-Henning Kamp Cc: Kevin Oberman , Craig Rodrigues , David Malone , sjh@zorak.net, freebsd-current@FreeBSD.ORG Subject: Re: Clock running double time Message-ID: <20030318193305.B40906@freebie.xs4all.nl> References: <20030318182207.C8DF95D07@ptavv.es.net> <76239.1048011828@critter.freebsd.dk> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.2.5i In-Reply-To: <76239.1048011828@critter.freebsd.dk>; from phk@phk.freebsd.dk on Tue, Mar 18, 2003 at 07:23:48PM +0100 X-OS: FreeBSD 4.8-RC X-PGP: finger wilko@freebsd.org Sender: owner-freebsd-current@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.ORG On Tue, Mar 18, 2003 at 07:23:48PM +0100, Poul-Henning Kamp wrote: > In message <20030318182207.C8DF95D07@ptavv.es.net>, "Kevin Oberman" writes: > > >> kern.timecounter.hardware=TSC > > > >Can someone explain why TSC is preferred to i8254 (or why not)? > > Cheaper access & better resolution. Which brings me to the question if there is a comprehensive story on timekeeping in FreeBSD in the docs? Like the EuroBSDcon2002 one, but with answers to questions like the one above added. [I did not hunt in the doc tree for it btw] -- | / o / /_ _ |/|/ / / /( (_) Bulte wilko@FreeBSD.org To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-current" in the body of the message