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Kernel Message: "BUG: arch topology borken the CPU domain not a subset of > the NUMA domain"

This document (7016991) is provided subject to the disclaimer at the end of this document.


SUSE Linux Enterprise Server 12


When SLES 12 is running on a PowerVM LPAR on an IBM Power server, the following kernel message (or similar) may occur:
"BUG: arch topology borken the CPU domain not a subset of the NUMA domain"
This is an indication of a potential performance issue.


This issue can be resolved by rebooting the LPAR.


 This kernel message is from the PowerVM hypervisor. It indicates that the LPAR's CPUs have moved to new NUMA nodes.

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  • Document ID:7016991
  • Creation Date: 16-Nov-2015
  • Modified Date:03-Mar-2020
    • SUSE Linux Enterprise Server

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