Getting performance statistics

The IBMTSSVC_PerformanceStatisticsService class provides the method for getting the performance statistics for IBMTSSVC_Node, IBMTSSVC_DiskDrive, IBMTSSVC_StorageVolume, and IBMTSSVC_BackendVolume.

1. Obtain the reference (CIMObjectPath) of an IBMTSSVC_PerformanceStatisticsService instance that is associated with the IBMTSSVC_Cluster in which you get the performance statistics by traversing the IBMTSSVC_HostedPerformanceStatisticsService association.
2. Invoke the IBMTSSVC_PerformanceStatisticsService.GetStatisticsCollection() method to get the performance statistics.
   Use the following parameter specifications:

   • The ElementTypes parameter is used to set the preferred statistics that would be returned according to the preferred source:
     • 8 to return the performance statistics of IBMTSSVC_StorageVolume
     • 10 to return the performance statistics of the IBMTSSVC_DiskDrive
     • 9 to return the performance statistics of the IBMTSSVC_BackendVolume
     • 32768 to return the performance statistics of the IBMTSSVC_Node
   • Set ManifestCollection to the reference (CIMObjectPath) of CIM_BlockStatisticsManifestCollection.
   • Set StatisticsFormat to 2 (which returns a comma-separated value [CSV]).

   The order of statistic properties that are returned by the GetStatisticsCollection method is the same as the order of properties definitions in the Managed Object Format (MOF) file.