Combining Information from HARCPU and HARLPC Files.

Document ID : KB000027698
Last Modified Date : 14/02/2018
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Although most of the performance metrics related to a logical partition's activity can be found in the PR/SM LPAR Configuration/Activity (HARLPC) file, some statistics, such as the 4-hour rolling average of consumed MSUs (CPUAVLAC), only exist in the CPU Activity (HARCPU) files. You may have to combine this unique information with the metrics from the HARLPC file to get a complete view of the activity of a partition.

So, how can you find in the HARCPU file the observation that correlates with a particular HARLPC file observation?

Both files are created from the SMF type 70 CPU Activity record, and the field that uniquely identifies the system (z/OS partition) that created the record is carried in each HARLPC observation (one per logical partition) built from the SMF record. This element is the System Identifier (SYSID). This is the first key element that you need to match because the HARLPC file can contain measurements collected from multiple SYSIDs running in the LPAR complex.

The second and last (yes, that simple!) key element required to correctly merge data from the HARCPU and HARLPC files is the Logical Partition Number (PRSMLPNO). For the HARCPU file, PRSMLPNO is read from field SMF70PTN in the RMF Product Section of the SMF type 70 record. It is the PR/SM partition number of the logical partition that wrote the SMF record. For the HARLPC file, PRSMLPNO is read from field SMF70LPN in each PR/SM Partition Data Section of the SMF 70-1 record. It is the logical partition number of the partition whose activity is described in the data section. Both fields, SMF70PTN and SMF70LPN, are always equal for the partition that wrote the SMF 70-1 record.

In summary, the two required key elements to accurately combine data from the HARCPU and HARLPC files are SYSID and PRSMLPNO. For more detailed information about PR/SM concepts and data analysis, see Section 6.8 of the CA NeuMICS Hardware and SCP Analyzer Guide.


-- Last Reviewed: 2007.11.20