On Tue, Jun 19, 2012 at 6:39 AM, Wojciech Puchar <woj...@wojtek.tensor.gdynia.pl> wrote: >> replacing rc.d, since that's almost certainly not relevant to the >> original topic of improving the overall boot time. > > > indeed. > > >> >> If you analyze the boot process thoroughly you should see that out of >> the total time taken to boot, nearly 0 is spent by rc.d actually doing >> something. Almost all of the actual time is spent waiting for other >> stuff, either the kernel (primarily) or the services that the system is >> running actually starting up. >> > most of boot time consist of > > - delay in bootloader. setting autoboot_delay can partially delay it, delay > to zero can be achieved by patching first stage booter that too add delay > > - delay in kernel initialization. making custom kernel helps of course but > still it takes eg 10 seconds on my laptop. putting things that are not > needed instantly at boot - as module - may help. USB being prime example. > > - delay at rc.d scripts - there are some delays inserted. > > >> The latter item is the only place where making changes to rc.d is going >> to help, and only then by parellelizing, and even then you are not >> really going to gain much since most things at boot time are serial. > > > grep sleep /etc/rc.d/* usr/local/etc/rc.d/* > > >> >> So while talk of how to get your favorite boot-time manager into FreeBSD >> may be entertaining, it's not likely to be productive, and almost > > > it is unimportant as FreeBSD don't crash.
Please, re-read already sent mails in this thread about that statement so we don't get stuck in a loop. > > _______________________________________________ > freebsd-hackers@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-hackers > To unsubscribe, send any mail to "freebsd-hackers-unsubscr...@freebsd.org" _______________________________________________ freebsd-hackers@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-hackers To unsubscribe, send any mail to "freebsd-hackers-unsubscr...@freebsd.org"
