"Affinity broken due to vector space exhaustion" log messages observed in dmesg

This document (000019936) is provided subject to the disclaimer at the end of this document.


SUSE Linux Enterprise Server 15 SP2


The following messages are observed in dmesg and /var/log/messages when SRIOV VFs are being assigned to VMs
 irq 86: Affinity broken due to vector space exhaustion.
 irq 87: Affinity broken due to vector space exhaustion.


The issue is resolved by installing the following irqbalance package version:
Released on March 29, 2021:

However, if there are newer versions available, it is recommended to install the most recent versions.


The messages occur because the irqbalance utility incorrectly identifies CPUs from NUMA node 1 as belonging to NUMA node 0.


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  • Document ID:000019936
  • Creation Date: 09-Jun-2021
  • Modified Date:10-Jun-2021
    • SUSE Linux Enterprise Server

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