Re: How fast can I get FBSD to boot?

From: Steve O'Hara-Smith <steve_at_sohara.org>
Date: Tue, 16 Aug 2022 17:54:08 UTC 
On Tue, 16 Aug 2022 10:47:12 -0700
Doug Hardie <bc979@lafn.org> wrote:

> RSX-11D solved that problem by having a console command that wrote all of
> memory to a specific disk file.  You got the system setup the way you
> wanted and then entered that command.  You could add additional commands
> to start your application to that command.
> 
> On boot, I believe the hardware was initialized first, and them memory
> was completely overlaid from the file and then the CLI executed any
> additional commands.  It was faster than greased lightening.  On the
> PDP-11/45 it was way less than one second.
> 
> That would take some serious modifications to FreeBSD to implement that,
> but I don't think you would find anything faster.

	You could probably torture the suspend/resume mechanism into doing
the job.

-- 
Steve O'Hara-Smith <steve@sohara.org>