1.2.2 Collecting performance data according to its characteristics
Performance data is collected in the form of records. Each record is divided into smaller units called fields. Records and fields are collectively referred to as data models.
Records are grouped into two record types according to their characteristics. The type of performance data that is collected in each record type is defined by PFM - RM for Virtual Machine. You use PFM - Web Console to select the performance data records to collect.
The record types of PFM - RM for Virtual Machine are as follows.
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Product Interval (PI) record type
For a record of the PI record type, performance data is collected for a given time interval, such as the CPU resources of a virtual machine used each minute. The PI record type is used to analyze changes and trends in the system status over time.
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Product Detail (PD) record type
For a record of the PD record type, performance data is collected that indicates the system status at a given point in time, such as configuration information data about a virtual machine. The PD record type is used to determine the system status at a given point in time.
For details about each record, see 5. Records.