Messages in this thread | | | Date | Wed, 15 Aug 2007 17:35:14 -0600 | From | Robert Hancock <> | Subject | Re: dual Xeon hyperthread system only showing up as 2 cpus |
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Chris Friesen wrote: > > Hi all, > > I've got a system that has two hyperthread-capable Xeons. If I boot it > with 2.6.10 it shows up as 4 cpus, but with 2.6.14 it only shows 2 cpus. > > The relevent boot logs are: > > 2.6.10: > > DMI 2.3 present. > ACPI: LAPIC (acpi_id[0x01] lapic_id[0x00] enabled) > Processor #0 15:2 APIC version 20 > ACPI: LAPIC (acpi_id[0x02] lapic_id[0x06] enabled) > Processor #6 15:2 APIC version 20 > ACPI: LAPIC (acpi_id[0x03] lapic_id[0x01] enabled) > Processor #1 15:2 APIC version 20 > ACPI: LAPIC (acpi_id[0x04] lapic_id[0x07] enabled) > Processor #7 15:2 APIC version 20 > Using ACPI for processor (LAPIC) configuration information > Intel MultiProcessor Specification v1.4 > Virtual Wire compatibility mode. > <snip> > Processors: 4 > > > 2.6.14: > > DMI 2.3 present. > Intel MultiProcessor Specification v1.4 > Virtual Wire compatibility mode. > OEM ID: INTEL Product ID: KingsCanyonC APIC at: 0xFEE00000 > Processor #0 15:2 APIC version 20 > Processor #6 15:2 APIC version 20 > <snip> > Processors: 2
You snipped the important part of the log. It's not using ACPI in 2.6.14 for some reason, which you need for HT to be detected. Either you didn't configure it in or it's failed to enable somehow. Please post the entire dmesg.
-- Robert Hancock Saskatoon, SK, Canada To email, remove "nospam" from hancockr@nospamshaw.ca Home Page: http://www.roberthancock.com/
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