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.

Environment


SUSE Linux Enterprise Server 12

Situation

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.

Resolution

This issue can be resolved by rebooting the LPAR.

Cause

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

Additional Information


Disclaimer

This Support Knowledgebase provides a valuable tool for SUSE customers and parties interested in our products and solutions to acquire information, ideas and learn from one another. Materials are provided for informational, personal or non-commercial use within your organization and are presented "AS IS" WITHOUT WARRANTY OF ANY KIND.

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

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