SAP Knowledge Base Article - Preview

2753342 - BUG: soft lockup - CPU#x stuck for xxs!

Symptom

  •  HANA DB unresponsive for short periods potentially resulting in application timeouts or short dumps.
  •  Unnecessary HANA standby node or  3rd party cluster solution failover
  •  IBM GPFS filesystem unmount
  •  Entries in syslog similar to :   kernel: [1865929.472648] BUG: soft lockup - CPU#9 stuck for 23s! [xxxx:xxxxx]
  •  High system cpu utilization

This KBA documents one of the possible causes of a CPU soft lockup in HANA environments.


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Environment

SUSE Linux Enterprise Server (SLES) / SLES for SAP

Note : Documentation of potentially similar issues with other Linux flavours is out of scope of this document.

Keywords

BUG, soft lockup, CPU stuck, PoolThread , KBA , BC-OP-LNX-SUSE , SUSE Linux , HAN-DB , SAP HANA Database , Problem

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