Why do some physical machine's cpu report incorrect core ids?

Solution Verified - Updated -

Issue

  • Why do some physical machine's cpu report incorrect core ids?
  • Why do we see core id exceeding actual number of total cores on some physical machines?
PROCESSOR_NO|   0|  1|  2|  3|  4|  5|  6|  7|  8|  9| 10| 11| 12| 13| 14| 15| 16| 17| 18| 19| 20| 21| 22| 23|
PHYSICAL_ID |   0|  1|  0|  1|  0|  1|  0|  1|  0|  1|  0|  1|  0|  1|  0|  1|  0|  1|  0|  1|  0|  1|  0|  1|
SIBLINGS    |  12| 12| 12| 12| 12| 12| 12| 12| 12| 12| 12| 12| 12| 12| 12| 12| 12| 12| 12| 12| 12| 12| 12| 12|
CORE_ID     |   0|  0|  4|  4|  2|  1| 11|  2|  8|  8| 10| 11|  9|  9| 19| 10| 17| 17| 18| 19| 25| 18| 27| 27|
CPU_CORES   |  12| 12| 12| 12| 12| 12| 12| 12| 12| 12| 12| 12| 12| 12| 12| 12| 12| 12| 12| 12| 12| 12| 12| 12|

Environment

  • Red Hat Enterprise Linux 7
  • Red Hat Enterprise Linux 8
  • Red Hat Enterprise Linux 9
  • x86_64

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