Messages in this thread |  | | | From | Andi Kleen <> | | Subject | Re: 2.6.16rc5 'found' an extra CPU. | | Date | Thu, 2 Mar 2006 01:55:46 +0100 |
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On Thursday 02 March 2006 00:03, Dave Jones wrote: > On Wed, Mar 01, 2006 at 05:46:47PM -0500, Dave Jones wrote: > > This amused me. > > > > (17:43:34:davej@nemesis:~)$ ll /proc/acpi/processor/ > > total 0 > > dr-xr-xr-x 2 root root 0 Mar 1 17:43 CPU1/ > > dr-xr-xr-x 2 root root 0 Mar 1 17:43 CPU2/ > > dr-xr-xr-x 2 root root 0 Mar 1 17:43 CPU3/ > > (17:43:36:davej@nemesis:~)$ > > Digging further. I notice more oddities (or maybe I've just > misunderstood this -- corrections welcomed)
Probably related to Ashok's ACPI CPU hotplug patches.
What's the full bootup log?
> (17:59:02:davej@nemesis:~)$ cat > /sys/devices/system/cpu/cpu0/topology/core_id 0 > (17:59:23:davej@nemesis:~)$ cat > /sys/devices/system/cpu/cpu1/topology/core_id 0 > > (17:59:38:davej@nemesis:~)$ cat > /sys/devices/system/cpu/cpu0/topology/core_siblings > 00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000001 > (17:59:47:davej@nemesis:~)$ cat > /sys/devices/system/cpu/cpu1/topology/core_siblings > 00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000002 > > Neither of these CPUs are HT / dual-core, so shouldn't these be the same ?
It looks like a standard dual socket machine. Each CPU is a sibling of its own only.
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