Date: Fri, 18 Jul 2008 17:18:07 +1000 From: Peter Jeremy <peterjeremy@optushome.com.au> To: Alexander Leidinger <Alexander@Leidinger.net> Cc: Doug Barton <dougb@freebsd.org>, David Naylor <naylor.b.david@gmail.com>, freebsd-current@freebsd.org Subject: Re: rc improvements (wanted?) Message-ID: <20080718071806.GV62764@server.vk2pj.dyndns.org> In-Reply-To: <20080718083725.97823be0tg13fn6s@webmail.leidinger.net> References: <200807172056.08835.naylor.b.david@gmail.com> <487FCA89.2010308@FreeBSD.org> <20080718083725.97823be0tg13fn6s@webmail.leidinger.net>
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--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 <Alexander@Leidinger.net= > 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--
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