From owner-freebsd-current@FreeBSD.ORG Fri Jul 18 07:18:11 2008 Return-Path: Delivered-To: freebsd-current@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 7A4E8106564A; Fri, 18 Jul 2008 07:18:11 +0000 (UTC) (envelope-from peterjeremy@optushome.com.au) Received: from mail35.syd.optusnet.com.au (mail35.syd.optusnet.com.au [211.29.133.51]) by mx1.freebsd.org (Postfix) with ESMTP id EC3BF8FC16; Fri, 18 Jul 2008 07:18:10 +0000 (UTC) (envelope-from peterjeremy@optushome.com.au) Received: from server.vk2pj.dyndns.org (c122-106-215-175.belrs3.nsw.optusnet.com.au [122.106.215.175]) by mail35.syd.optusnet.com.au (8.13.1/8.13.1) with ESMTP id m6I7I7wU023676 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NO); Fri, 18 Jul 2008 17:18:08 +1000 Received: from server.vk2pj.dyndns.org (localhost.vk2pj.dyndns.org [127.0.0.1]) by server.vk2pj.dyndns.org (8.14.2/8.14.2) with ESMTP id m6I7I7rt058833; Fri, 18 Jul 2008 17:18:07 +1000 (EST) (envelope-from peter@server.vk2pj.dyndns.org) Received: (from peter@localhost) by server.vk2pj.dyndns.org (8.14.2/8.14.2/Submit) id m6I7I74k058832; Fri, 18 Jul 2008 17:18:07 +1000 (EST) (envelope-from peter) Date: Fri, 18 Jul 2008 17:18:07 +1000 From: Peter Jeremy To: Alexander Leidinger Message-ID: <20080718071806.GV62764@server.vk2pj.dyndns.org> References: <200807172056.08835.naylor.b.david@gmail.com> <487FCA89.2010308@FreeBSD.org> <20080718083725.97823be0tg13fn6s@webmail.leidinger.net> MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="LQFJYnjHKDAbJRTQ" Content-Disposition: inline In-Reply-To: <20080718083725.97823be0tg13fn6s@webmail.leidinger.net> X-PGP-Key: http://members.optusnet.com.au/peterjeremy/pubkey.asc User-Agent: Mutt/1.5.18 (2008-05-17) Cc: Doug Barton , David Naylor , freebsd-current@freebsd.org Subject: Re: rc improvements (wanted?) X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Discussions about the use of FreeBSD-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 18 Jul 2008 07:18:11 -0000 --LQFJYnjHKDAbJRTQ Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On 2008-Jul-18 08:37:25 +0200, Alexander Leidinger wrote: >Are you aware that the parallel starting in Solaris 10 reduced the =20 >booting time by a nice percentage? Given that Solaris boots in geologic time, this probably wouldn't be difficult. > If yes, do you expect that FreeBSD =20 >behaves significantly different or do you "just" want to see numbers? Parallel starting is not guaranteed to be an improvement. Starting a whole pile of processes that are I/O bound during initialisation (think squid or some databases) may be worse than starting them one at a time. Likewise, a whole pile of processes that are CPU bound will just thrash the scheduler. (Though parallel starting of I/O and CPU bound processes should be a win). >Sidenote: Even if there's no significant speedup, the possibility to =20 >start things in parallel should be provided, this would allow more =20 >experimentation (at all respectively later). Agreed. --=20 Peter Jeremy Please excuse any delays as the result of my ISP's inability to implement an MTA that is either RFC2821-compliant or matches their claimed behaviour. --LQFJYnjHKDAbJRTQ Content-Type: application/pgp-signature Content-Disposition: inline -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.9 (FreeBSD) iEYEARECAAYFAkiAQ64ACgkQ/opHv/APuIcxYgCfQfaalhQt85CKO7e38VAL7OT0 zt8AnRBVrZEo4+OK6+P2wwvOvxrlGG4g =Ih8d -----END PGP SIGNATURE----- --LQFJYnjHKDAbJRTQ--