Re: cannot compile sched_ule without options SMP

From: pluknet <pluknet_at_gmail.com>
Date: Fri, 1 May 2009 07:04:13 +0400
2009/5/1 pluknet <pluknet_at_gmail.com>:
> 2009/5/1 Jeff Roberson <jroberson_at_jroberson.net>:
>> On Thu, 30 Apr 2009, pluknet wrote:
>>
>>> 2009/4/30 Jeff Roberson <jroberson_at_jroberson.net>:
>>>>
>>>> On SMP machines you should now see output like this:
>>>> FreeBSD/SMP: Multiprocessor System Detected: 8 CPUs
>>>> FreeBSD/SMP: 1 package(s) x 4 core(s) x 2 SMT threads
>>>>
>>>> If you detect any irregularities with kern.sched.topology_spec or this
>>>> dmesg
>>>> line please report them.
>>>>
>>>
>>> Hi, Jeff.
>>>
>>> I have such mismatch. This is an Intel E7200.
>>>
>>> FreeBSD/SMP: Multiprocessor System Detected: 2 CPUs
>>> FreeBSD/SMP: 1 package(s) x 1 core(s) x 2 HTT threads
>>> cpu0 (BSP): APIC ID:  0
>>> cpu1 (AP/HT): APIC ID:  1
>>>
>>> So it should be instead: 1 package(s) x 2 core(s)
>>> cpu0 (BSP): APIC ID:  0
>>> cpu1 (AP): APIC ID:  1
>>
>> Can you please repeat the following steps as I have done here:
>>
>
> (kgdb) p/x cpu_high
> $1 = 0x2
> (kgdb) p/x cpu_cores
> $2 = 0x1
> (kgdb) p/x cpu_logical
> $3 = 0x2
> (kgdb) p/x cpu_feature
> $4 = 0xbfebfbff
> (kgdb) p/x logical_cpus
> $5 = 0x2
> (kgdb) p/x hyperthreading_cpus
> $6 = 0x2
>

Follow up myself:

What is embarrassing me is HTT feature enabled. May the reason be in a
buggy CPUID ?

-- 
wbr,
pluknet
Received on Fri May 01 2009 - 01:04:19 UTC

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