Wrong total number of logical cpus on Xeon E3-1240

[NmxMilk]

Hi,
Can you please explain why data.total_logical_cpus is returning a value of 4 instead of 8 ?

CPU Info:

vendor_str : GenuineIntel' vendor id : 0 brand_str : Intel(R) Xeon(R) CPU E31240 @ 3.30GHz'
family : 6 (06h)
model : 10 (0Ah)
stepping : 7 (07h)
ext_family : 6 (06h)
ext_model : 42 (2Ah)
num_cores : 4
num_logical: 8
tot_logical: 4
...
For information, i ran the cpuid_tool under Windows 10.
Windows task manager is giving the following info:

• sockets = 1
• cores = 4
• logical processors = 4

Looking in the source code i see the value is taken (under windows) from GetSystemInfo so that explains the value of 4. This is confusing since intel documentation says it has 8 thread.

Thanks

[anrieff]

No, in this case GetSystemInfo() should return 8, not 4, if the system is configured correctly. It could be that hyper-threading is disabled by BIOS or by some setting in the Windows 10 itself (I've never used Windows 10 personally, so I don't know where this can be set/configured). Please also try with CPU-Z and see what it reports.

[anrieff]

Closing as old, and no additional data was given to confirm the bug