Re: More than 8 CPUs detected and CONFIG_X86_PC cannot handle it on 2.6.16-rc6

[Chuck Ebbert]

In-Reply-To: <Pine.LNX.4.64.0603120256480.14567@xxxxxxxxxxxxxxxxx>

On Sun, 12 Mar 2006 03:04:40 +0100, Krzysztof Oledzki wrote:

> After upgrading to 2.6.16-rc6 I noticed this strange message:
> 
> More than 8 CPUs detected and CONFIG_X86_PC cannot handle it.
> Use CONFIG_X86_GENERICARCH or CONFIG_X86_BIGSMP.
> 
> This is a Dell PowerEdge SC1425 with two P4 Xeons with HT enabled (so with 
> totoal of 4 logical CPUs).

In a later message, you wrote:

> ACPI: LAPIC (acpi_id[0x01] lapic_id[0x00] enabled)
> Processor #0 15:4 APIC version 20
> ACPI: LAPIC (acpi_id[0x02] lapic_id[0x06] enabled)
> Processor #6 15:4 APIC version 20
             ^
> ACPI: LAPIC (acpi_id[0x03] lapic_id[0x01] enabled)
> Processor #1 15:4 APIC version 20
> ACPI: LAPIC (acpi_id[0x04] lapic_id[0x07] enabled)
> Processor #7 15:4 APIC version 20
             ^

What processor numbers did you get on 2.6.15.x?
Does /proc/cpuinfo show all four CPUs?
If you start four CPU-hungry processes, do all four show 100% utilization in top(1)?


-- 
Chuck
"Penguins don't come from next door, they come from the Antarctic!"

-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/