From owner-freebsd-stable  Wed Sep  4 13: 2:25 2002
Delivered-To: freebsd-stable@freebsd.org
Received: from mx1.FreeBSD.org (mx1.FreeBSD.org [216.136.204.125])
	by hub.freebsd.org (Postfix) with ESMTP id BC2BC37B400
	for <stable@freebsd.org>; Wed,  4 Sep 2002 13:02:18 -0700 (PDT)
Received: from gull.mail.pas.earthlink.net (gull.mail.pas.earthlink.net [207.217.120.84])
	by mx1.FreeBSD.org (Postfix) with ESMTP id C3A9A43E72
	for <stable@freebsd.org>; Wed,  4 Sep 2002 13:01:14 -0700 (PDT)
	(envelope-from manek@ecst.csuchico.edu)
Received: from 209-239-207-48.oak.jps.net ([209.239.207.48] helo=rover)
	by gull.mail.pas.earthlink.net with smtp (Exim 3.33 #1)
	id 17mgIh-0003oa-00; Wed, 04 Sep 2002 12:58:55 -0700
From: "Sameer R. Manek" <manek@ecst.csuchico.edu>
To: "Kevin Oberman" <oberman@es.net>,
	"Jack L. Stone" <jackstone@sage-one.net>
Cc: "Brooks Davis" <brooks@one-eyed-alien.net>,
	"David W. Chapman Jr." <dwcjr@inethouston.net>, <stable@FreeBSD.ORG>
Subject: RE: Updating world with least downtime 
Date: Wed, 4 Sep 2002 12:58:54 -0700
Message-ID: <LMEMIKHGPPEEMMMMGIENMEDCENAA.manek@ecst.csuchico.edu>
MIME-Version: 1.0
Content-Type: text/plain;
	charset="iso-8859-1"
Content-Transfer-Encoding: 7bit
X-Priority: 3 (Normal)
X-MSMail-Priority: Normal
X-Mailer: Microsoft Outlook IMO, Build 9.0.2416 (9.0.2911.0)
X-MimeOLE: Produced By Microsoft MimeOLE V5.50.4910.0300
In-Reply-To: <20020830211107.8251F5D06@ptavv.es.net>
Importance: Normal
Sender: owner-freebsd-stable@FreeBSD.ORG
Precedence: bulk
List-ID: <freebsd-stable.FreeBSD.ORG>
List-Archive: <http://docs.freebsd.org/mail/> (Web Archive)
List-Help: <mailto:majordomo@FreeBSD.ORG?subject=help> (List Instructions)
List-Subscribe: <mailto:majordomo@FreeBSD.ORG?subject=subscribe%20freebsd-stable>
List-Unsubscribe: <mailto:majordomo@FreeBSD.ORG?subject=unsubscribe%20freebsd-stable>
X-Loop: FreeBSD.ORG

I recently rebuilt the world on my pII 400 system, and here is how long it
took me.

/usr/bin/time make installworld
       266.34 real        74.23 user        43.33 sys
/usr/bin/time make installkernel
       26.11 real         6.89 user         2.38 sys

So it took about 4.8 minutes to install the files, given average consumer
grade disks. Compiling is more cpu dependant, but the install portion is
more a function of disk-io.

Mergemaster is obviously dependent on how quickly it takes the operator to
run that command. But if you budget 10 - 15 minutes, it should be good
enough.

Sameer

> -----Original Message-----
> From: owner-freebsd-stable@FreeBSD.ORG
> [mailto:owner-freebsd-stable@FreeBSD.ORG]On Behalf Of Kevin Oberman
> Sent: Friday, August 30, 2002 2:11 PM
> To: Jack L. Stone
> Cc: Brooks Davis; David W. Chapman Jr.; stable@FreeBSD.ORG
> Subject: Re: Updating world with least downtime
>
>
>
> For a modern system and a reasonable disk, this is trivial. I have a
> system which MUST not be down for over 15 minutes and I can do it
> quite easily unless I really fumble something in mergemaster. I do
> always merge a few files later and tend to install most changes very
> quickly, having ode the same upgrade on a non-critical system just
> before I do the critical one so I know what to expect.
>
> The actual installworld time on my 1GHZ system is about 5 minutes
> (5:34 last time).
>
> R. Kevin Oberman, Network Engineer
> Energy Sciences Network (ESnet)
> Ernest O. Lawrence Berkeley National Laboratory (Berkeley Lab)
> E-mail: oberman@es.net			Phone: +1 510 486-8634
>


To Unsubscribe: send mail to majordomo@FreeBSD.org
with "unsubscribe freebsd-stable" in the body of the message