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2305111 - High spinlock contention in "default data cache" partition - SAP ASE

Symptom

  • ASE server performs very slow.
  • sp_sysmon reports show "Engine Utilization (Tick %)" reached 99~100% for all engines.
  • sp_sysmon reports show spinlock contention in the default data cache.
  • Spinmon reports show 90% spinlock contention in one of the cache partition in the default data cache.


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Environment

  • SAP Adaptive Server Enterprise (ASE) 15.7
  • SAP Adaptive Server Enterprise (ASE) 16.0

Product

SAP Adaptive Server Enterprise 15.7 ; SAP Adaptive Server Enterprise 16.0 ; Sybase Adaptive Server Enterprise 15.0 ; Sybase Adaptive Server Enterprise 15.5

Keywords

CR797715, CR#797715 , 797715, monProcessActivity, monProcess, monOpenObjectActivity, monCachedObject, spinmon.sh , concurrent, hot, MPA, MP, named cache, cache partitions, Cachelet ID, monitoring tables , KBA , BC-SYB-ASE , Sybase ASE Database Platform (non Business Suite) , How To

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