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3484175 - High CPU load in the system with high number of Workload Class Mappings

Symptom

  • High cpu load in the Hana server
  • System has large number of workload class mappings 
          select count (*) from WORKLOAD_MAPPINGS   
  • RTE dump or kernel profiler trace shows call stack

                 impl::checkMapping(int&, ptime::impl::WorkloadMapping 
                 WorkloadCatalogCache::getWorkloadClassNoLock
                 WorkloadClassManagerImpl::getWorkloadClass
                WorkloadClassAdapter::reload
                Connection::getWorkloadClass
                Statement::validateLocalStatementContext
                Statement::QueryExecutionScope::QueryExecutionScope
                Statement::execute_


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Environment

SAP HANA, platform edition 2.0

Product

SAP HANA, platform edition 2.0

Keywords

Workload Class Mapping, CPU , "checkMapping" , KBA , HAN-DB-PERF , SAP HANA Database Performance , How To

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