stanislaw
n00b
Joined: 08 Jan 2008
Posts: 66
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 Posted: Thu Jan 15, 2009 8:25 pm Post subject: Sometimes only one CPU detected although HT active |
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I am encountering a strange problem, where my kernel only detects one CPU at boot time although Hyperthreading is activated and in estimated 95% of cases my linux box boots up with two kernels showing up.
Here's a diff between two dmesg-outputs, respectively described by their filenames:
| Quote: |
~ # diff one_cpu.log two_cpu.log
72c72
< Detected 2992.792 MHz processor.
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> Detected 2992.798 MHz processor.
89c89
< Calibrating delay using timer specific routine.. 5987.99 BogoMIPS (lpj=2993996)
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> Calibrating delay using timer specific routine.. 5988.11 BogoMIPS (lpj=2994058)
104,111c104,123
< Not responding.
< Inquiring remote APIC #1...
< ... APIC #1 ID: failed
< ... APIC #1 VERSION: failed
< ... APIC #1 SPIV: failed
< Brought up 1 CPUs
< Total of 1 processors activated (5987.99 BogoMIPS).
< CPU0 attaching NULL sched-domain.
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> Initializing CPU#1
> Calibrating delay using timer specific routine.. 5984.25 BogoMIPS (lpj=2992128)
> CPU: Trace cache: 12K uops, L1 D cache: 8K
> CPU: L2 cache: 512K
> CPU: Physical Processor ID: 0
> Intel machine check architecture supported.
> Intel machine check reporting enabled on CPU#1.
> CPU1: Intel P4/Xeon Extended MCE MSRs (12) available
> CPU1: Thermal monitoring enabled
> x86 PAT enabled: cpu 1, old 0x7040600070406, new 0x7010600070106
> CPU1: Intel(R) Pentium(R) 4 CPU 3.00GHz stepping 09
> checking TSC synchronization [CPU#0 -> CPU#1]: passed.
> Brought up 2 CPUs
> Total of 2 processors activated (11972.37 BogoMIPS).
> CPU0 attaching sched-domain:
> domain 0: span 0-1
> groups: 0 1
> CPU1 attaching sched-domain:
> domain 0: span 0-1
> groups: 1 0
206a219
> Switched to high resolution mode on CPU 1
367c380
< intel8x0_measure_ac97_clock: measured 50371 usecs
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> intel8x0_measure_ac97_clock: measured 50158 usecs
372a386
> Starting balanced_irq
404a419,422
> parport_pc 00:0a: unable to assign resources
> parport_pc: probe of 00:0a failed with error -16
> parport_pc 00:0b: reported by Plug and Play ACPI
> parport0: PC-style at 0x378 (0x778), irq 7, dma 3 [PCSPP,TRISTATE,COMPAT,ECP,DMA]
411,414d428
< parport_pc 00:0a: unable to assign resources
< parport_pc: probe of 00:0a failed with error -16
< parport_pc 00:0b: reported by Plug and Play ACPI
< parport0: PC-style at 0x378 (0x778), irq 7, dma 3 [PCSPP,TRISTATE,COMPAT,ECP,DMA]
429d442
< ohci1394: fw-host0: OHCI-1394 1.0 (PCI): IRQ=[22] MMIO=[c0200000-c02007ff] Max Packet=[2048] IR/IT contexts=[8/8]
431c444
< ieee1394: Host added: ID:BUS[0-00:1023] GUID[0030053100030d2f]
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> ohci1394: fw-host0: OHCI-1394 1.0 (PCI): IRQ=[22] MMIO=[c0200000-c02007ff] Max Packet=[2048] IR/IT contexts=[8/8]
437c450,451
< vboxdrv: Found 1 processor cores.
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> vboxdrv: Found 2 processor cores.
> vboxdrv: fAsync=0 offMin=0x57c offMax=0x2398
439a454
> ieee1394: Host added: ID:BUS[0-00:1023] GUID[0030053100030d2f]
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I am runnning "Linux version 2.6.26-gentoo-r4", but already found this failure in earlier versions.
Is this a kernel or software problem or shall I slowly say goodbye to my mainboard/CPU? Any hints? |
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Kernel & Hardware
