Date: Wed, 14 Jul 2010 16:44:05 +0200 (CEST) From: Oliver Fromme <olli@lurza.secnetix.de> To: freebsd-stable@FreeBSD.ORG, pluknet@gmail.com Subject: Re: 8.1-PRERELEASE: CPU packages not detected correctly Message-ID: <201007141444.o6EEi5uk016145@lurza.secnetix.de> In-Reply-To: <AANLkTimM0L_7nAGPDKg-jBgCjbD5EhijvieFTfUUEBUz@mail.gmail.com>
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pluknet <pluknet@gmail.com> wrote:
> On 14 July 2010 18:14, Oliver Fromme <olli@lurza.secnetix.de> wrote:
> > In a machine installed yesterday, 8.1-PRERELEASE doesn't
> > seem to detect the number of CPU packages vs. cores per
> > package correctly:
> >
> > | FreeBSD 8.1-PRERELEASE-20100713 #0: Tue Jul 13 19:51:18 UTC 2010
> > | [...]
> > | CPU: Intel(R) Xeon(R) CPU L5408 @ 2.13GHz (2133.42-MHz K8-class CPU)
> > | Origin = "GenuineIntel" Id = 0x1067a Family = 6 Model = 17 Stepping = 10
> > | 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=0x40ce3bd<SSE3,DTES64,MON,DS_CPL,VMX,EST,TM2,SSSE3,CX16,xTPR,PDCM,DCA,SSE4.1,XSAVE>
> > | AMD Features=0x20000800<SYSCALL,LM>
> > | AMD Features2=0x1<LAHF>
> > | TSC: P-state invariant
> > | real memory = 34359738368 (32768 MB)
> > | avail memory = 33151377408 (31615 MB)
> > | ACPI APIC Table: <IBM SERBLADE>
> > | FreeBSD/SMP: Multiprocessor System Detected: 8 CPUs
> > | FreeBSD/SMP: 1 package(s) x 8 core(s)
> > | cpu0 (BSP): APIC ID: 0
> > | cpu1 (AP): APIC ID: 1
> > | cpu2 (AP): APIC ID: 2
> > | cpu3 (AP): APIC ID: 3
> > | cpu4 (AP): APIC ID: 4
> > | cpu5 (AP): APIC ID: 5
> > | cpu6 (AP): APIC ID: 6
> > | cpu7 (AP): APIC ID: 7
> > | ioapic1 <Version 2.0> irqs 24-47 on motherboard
> > | ioapic0 <Version 2.0> irqs 0-23 on motherboard
> >
> > I'm pretty sure that this is a 2 x 4 machine (2 CPU packages
> > with 4 cores per package), not 1 x 8. That's what the BIOS
> > displays during POST.
> >
>
> Hi, can you show kern.sched.topology_spec ?
> It would clarify things a bit.
Sure:
<groups>
<group level="1" cache-level="0">
<cpu count="8" mask="0xff">0, 1, 2, 3, 4, 5, 6, 7</cpu>
<flags></flags>
<children>
<group level="3" cache-level="2">
<cpu count="8" mask="0xff">0, 1, 2, 3, 4, 5, 6, 7</cpu>
<flags></flags>
</group>
</children>
</group>
</groups>
Best regards
Oliver
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