8.1-PRERELEASE: CPU packages not detected correctly
freebsd at jdc.parodius.com
Fri Jul 16 07:55:29 UTC 2010
On Thu, Jul 15, 2010 at 10:01:48PM +0200, Oliver Fromme wrote:
> Jung-uk Kim wrote:
> > On Thursday 15 July 2010 01:56 pm, Andriy Gapon wrote:
> > > on 15/07/2010 19:57 Oliver Fromme said the following:
> > > > I patched topo_probe() so it calls topo_probe_0x4() after
> > > > topo_probe_0xb() if cpu_cores is still 0. I think this
> > > > is a better fallback procedure. With this patch, cpu_cores
> > > > gets the value 4 which is the correct one, finally:
> > > [...]
> > > I think that your addition achieves this effect, perhaps just not
> > > as explicitly as I would preferred.
> > >
> > > Jung-uk, what do you think?
> > Yes, you're right. Please try new patch:
> > http://people.freebsd.org/~jkim/mp_machdep2.diff
> Thank you!
> I will have access to that particular machine on Monday again,
> so testing the new patch will have to wait until Monday.
> But from looking at your patch it should have the same result
> as my simpler patch, so it should work fine.
I have a general question for everyone involved in this thread (which is
highly educational/interesting -- thank you for all the info!):
Does the problem reported affect actual performance/behaviour of FreeBSD
kernel-wise at all, or is it just a cosmetical issue with regards to
showing how many cores/threads there are?
| Jeremy Chadwick jdc at parodius.com |
| Parodius Networking http://www.parodius.com/ |
| UNIX Systems Administrator Mountain View, CA, USA |
| Making life hard for others since 1977. PGP: 4BD6C0CB |
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