Date: Sun, 20 Jul 2008 00:35:10 +0300 From: "Niki Denev" <ndenev@gmail.com> To: "Stefan Bethke" <stb@lassitu.de> Cc: FreeBSD Current <freebsd-current@freebsd.org> Subject: Re: rc improvements (wanted?) Message-ID: <2e77fc10807191435tdde4f41nf48402bcf157a137@mail.gmail.com> In-Reply-To: <525E8FF6-307E-4DC9-B730-21435A2C2D2C@lassitu.de> References: <200807172056.08835.naylor.b.david@gmail.com> <487FCA89.2010308@FreeBSD.org> <20080718083725.97823be0tg13fn6s@webmail.leidinger.net> <20080718071806.GV62764@server.vk2pj.dyndns.org> <525E8FF6-307E-4DC9-B730-21435A2C2D2C@lassitu.de>
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On Fri, Jul 18, 2008 at 2:19 PM, Stefan Bethke <stb@lassitu.de> wrote: > > Am 18.07.2008 um 09:18 schrieb Peter Jeremy: > >> 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 >>> 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 >>> 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). > > Just as a simple counter-example: it's very annoying when a startup script > for a non-essential service is blocking startup for an essential one. (A > Smokeping config of mine takes about 5 minutes to finish, and it's blocking > sshd, as I found out the other day when I had to reboot the server.) Also > see the repeated annoyances caused by dhclient on this list and elsewhere. > Hi Stefan, I'm a little bit offtopic, but I've fixed my dhclient problems (delays) with the following patch : http://lists.freebsd.org/pipermail/freebsd-current/2008-July/086888.html P.S.: I think that we could benefit from some kind of rc scripts improvement, some years ago I was very happy that my FreeBSD box booted much faster than a Linux one, but today it's the other way around. Some distributions (Ubuntu?) even have new event based startup daemons : http://www.linux.com/feature/125977 https://wiki.ubuntu.com/ReplacementInit HTH, Niki > > Stefan > > -- > Stefan Bethke <stb@lassitu.de> Fon +49 170 346 0140
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