Re: starting AMD second core

[arthur <arthur%ilvsun3.com@localhost>]

Andrew Doran wrote:
> On Sat, Apr 26, 2008 at 06:39:02PM +0000, arthur wrote:
>
> > Andrew Doran <a <at> netbsd.org> writes:
> > > Please try booting a -current kernel. You can get one from ftp.netbsd.org/pub/
> > > NetBSD/NetBSD_daily, I think.
> > >
> > > Andrew
> > I replaced my /netbsd with this version:
> > ftp://ftp2.us.netbsd.org/pub/NetBSD/NetBSD-daily/netbsd-4/200804210000Z
> > /amd64/binary/kernel/netbsd-GENERIC.MP.gz
> >
> > rebooted, and now the second cpu comes up wonderfully!
> >
> > I ran a few processor intensive tasks simultaneously and "top" shows each core
> > running at 100% and everything looks great.
> >
> > Thanks all,
> > arthur
>
> Hmm, I think you must have installed the GENERIC kernel and not GENERIC.MP.
> You are using a netbsd-4 kernel now, not a -current one. FYI in -current
> which will become 5.0, multiprocessor support is included by default so it
> is not an issue.
>
> Andrew

Fortunately, I have a copy of my previous "dmesg" and it shows that your 
assessment is correct:

NetBSD 4.0 (GENERIC) #0: Sat Dec 15 22:25:31 PST 2007
builds@wb28:/home/builds/ab/netbsd-4-0-RELEASE/amd64/200712160005Z-obj
/home/builds/ab/netbsd-4-0-RELEASE/src/sys/arch/amd64/compile/GENERIC

When I installed NetBSD 4.0, I just got the latest iso, and installed. I 
didn't know that I had to replace the generic kernel with a MP kernel 
(or even that there were two different kernels).  I don't recall 
anything in the installation process that queried me about MP or my 
kernel desires, so I didn't even know that I didn't know.  :)

> FYI in -current
> which will become 5.0, multiprocessor support is included by default 
> > so it
> is not an issue.

Cool!
thanks,
arthur