Xeon - way to get number of cores per processor in server

[jaroslawmusial]

I am looking for a way to get  number of cores in processor that works always.

There is value called  Maximum number of processor cores in physical processor package (CPUID EAX[31:26] ) which usually shows good value but for some reason for old processors it may be wrong. For example Intel Processor E7220, 2 cores per processor - for 4-way server it showed 4 cores per processor. Oddly /proc/cpuinfo shows good value.

Could someone help with that?

[Leonardo_C_Intel]

Hello jaroslawmusial

Thank you for posting in the Intel Community.

Due to this product discontinued status of the Intel® Xeon® Processor E7220 (https://ark.intel.com/content/www/us/en/ark/products/30780/intel-xeon-processor-e7220-8m-cache-2-93-ghz-1066-mhz-fsb.html)  Intel Customer Service no longer supports inquiries for it, but perhaps fellow community members might have the knowledge to jump in and help.

Regards,

Leonardo C.

Intel Customer Support Technician