Why does FreeBSD 8.-0 think that my Dell SX260 have "non-unform
processors"?
Ian Smith
smithi at nimnet.asn.au
Thu Dec 31 07:56:40 UTC 2009
On Wed, 30 Dec 2009, Torfinn Ingolfsen wrote:
> On Wed, 23 Dec 2009 17:08:58 +1100 (EST)
> Ian Smith <smithi at nimnet.asn.au> wrote:
> > On Wed, 23 Dec 2009, Torfinn Ingolfsen wrote:
> > >
> > > I don't know. Since last time, I've upgraded the bios to the
> > > latest (A03) and reset bios to default values - but the problem is
> > > still there. According to the specs, a SX260 supports all Pentium
> > > 4 cpus with 400 MHz and 533 MHz FSB (front side bus).
> >
> > Yes, this is your problem, regarding speed anyway. I only picked up
> > on this because this year we bought 2 used intel mobos on eBay; a
> > D845GBV with a 2GHz P4 (also 400/533 MHz FSB with similar 845 chips
> > to yours) and the other a D865GLC with a 2.6GHz HTT P4 (400/533/800
> > MHz FSB).
>
> You're right, of course. :-)
Well, 'for once' :)
> I found a Pentium 4 with 400 Mhz FSB, it looks much better now:
> FreeBSD 7.2-STABLE #6: Sun Oct 11 11:14:33 CEST 2009
> root at kg-work2.kg4.no:/usr/obj/usr/src/sys/SX270
> Timecounter "i8254" frequency 1193182 Hz quality 0
> CPU: Intel(R) Pentium(R) 4 CPU 2.00GHz (1992.63-MHz 686-class CPU)
> Origin = "GenuineIntel" Id = 0xf27 Stepping = 7
> Features=0xbfebfbff<FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,CLFLUSH,DTS,ACPI,MMX,FXSR,SSE,SSE2,SS,HTT,TM,PBE>
> Features2=0x4400<CNXT-ID,xTPR>
> real memory = 2145849344 (2046 MB)
>
> and FreeBSD 8.0 doesn't say anything about "non-unform cpu" anymore. ;^)
Great. Your 2GHz P4 is a later stepping which has HTT also, ours is:
CPU0: Intel(R) Pentium(R) 4 CPU 2.00GHz stepping 04
Total of 1 processors activated (4003.47 BogoMIPS).
as Debian dmesg tells it.
But I still don't know whether it's nowadays safe and/or advantageous
running hyperthreading on these CPUs in FreeBSD? Anyone?
cheers, Ian
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