Hua-Ying Ling wrote:
Hi Stephane,
On 11/10/06, Stephane Eranian <[EMAIL PROTECTED]> wrote:
> [EMAIL PROTECTED]:~/testc/debug/src> dmesg|grep perfmon
> Linux version 2.6.18-perfmon2-smp ([EMAIL PROTECTED]) (gcc version 4.1.0
> (SUSE Linux)) #2 SMP Wed Oct 11 22:02:37 EDT 2006
> perfmon: CPU0 APIC mask=0x100ee
> perfmon: version 2.2
> perfmon: added sampling format default
> perfmon: cores/package=2 threads/core=0
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
> perfmon: HyperThreading supported, status off
> perfmon: Data Save Area (DS) supported
> perfmon: PEBS supported, status off (because of HT)
^^^^^^^^^^^^^^^^^^^^^^^^^^
those 2 messages look strange to me. Make sure you have Hyperthreading
OFF.
I thought that was strange too but the Pentium D 820 doesn't support
Hyperthreading... is it possible perfmon isn't detecting HT correctly?
Thanks,
Hua-Ying
What does the ouptut of /proc/cpu infor look like? is there an "ht" on the
flags line? Does the number of processors agree with how the machine is configured.
Could the test for HT be confusing multicore processors with hyperthreaded
processors, e.g. see more than one processor in the package assume HT.
-Will
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