FreeBSD Boot Times

[Brandon Falk]

Ill do some profiling tonight and get back to you then.
On Jun 12, 2012 3:27 AM, "Hans Petter Selasky" <hselasky at c2i.net> wrote:

> On Tuesday 12 June 2012 08:23:33 Andriy Gapon wrote:
> > on 12/06/2012 01:21 Brandon Falk said the following:
> > > Greetings,
> > >
> > > I was just wondering what it is that FreeBSD does that makes it take so
> > > long to boot. Booting into Ubuntu minimal or my own custom Linux
> distro,
> > > literally takes 0.5-2 seconds to boot up to shell, where FreeBSD takes
> > > about 10-20 seconds. I'm not sure if anything could be parallelized in
> > > the boot process, but Linux somehow manages to do it. The Ubuntu
> install
> > > I do pretty much consists of a shell and developers tools, but it still
> > > has a generic kernel. There must be some sort of polling done in the
> > > FreeBSD boot process that could be parallelized or eliminated.
> > >
> > > Anyone have any suggestions?
> >
> > Do you have a breakdown of the boot time between pre-loader, loader,
> kernel
> > and rc stages?
> >
> > > Note: This isn't really an issue, moreso a curiosity.
> >
> > Ditto. :-)
>
> BTW: Booting over USB is slow because many small chuncks of data is read
> instead of a few big chunks when loading the kernel and modules at the
> loader
> time.
>
> --HPS
>