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IBM Tivoli Monitoring > Version 6.3 > User's Guides > Log File Agent User's Guide > Attributes reference IBM Tivoli Monitoring, Version 6.3
Disk capacity planning for historical data
Disk capacity planning for a monitoring agent is a prediction of the amount of disk space to be consumed by the historical data in each attribute group that is collecting historical data. Required disk storage is an important factor when you are defining data collection rules and your strategy for historical data collection.
The Capacity planning for historical data table provides the following information, which is required to calculate disk space for this monitoring agent:
- Table
- Table name as it is displayed in the warehouse database, if the attribute group is configured to be written to the warehouse. The table name listed here corresponds to the table name in Attribute groups for the monitoring agent.
- Attribute group
- Name of the attribute group that is used to create the table in the warehouse database if it is short enough to fit in the table naming constraints of the database that is being used for the warehouse. The attribute group name listed here corresponds to the Warehouse table name in Attribute groups for the monitoring agent.
- Bytes per row (agent)
- Estimate of the record length for each row or instance that is written to the agent disk for historical data collection. This estimate can be used for agent disk space planning purposes.
- Database bytes per row (warehouse)
- Estimate of the record length for detailed records that are written to the warehouse database, if the attribute group is configured to be written to the warehouse. Detailed records are records that have been uploaded from the agent for long-term historical data collection. This estimate can be used for warehouse disk-space planning purposes.
- Aggregate bytes per row (warehouse)
- Estimate of the record length for aggregate records that are written to the warehouse database, if the attribute group is configured to be written to the warehouse. Aggregate records are created by the Summarization agent for attribute groups that have been configured for summarization. This estimate can be used for warehouse disk-space planning purposes.
In addition to the information in the tables, you must know the number of rows of data that you plan to collect. An attribute group can have single or multiple rows of data, depending on the application environment that is being monitored. For example, if your attribute group monitors each processor in your computer and you have a dual processor computer, the number of rows is two.
Capacity planning for historical data logged by the Log File agent
Table Attribute group Bytes per row (agent) Database bytes per row (warehouse) Aggregate bytes per row (warehouse) KLOLFAPFLS KLO_LFAPROFILES 2245 2256 2293 KLOLOGEVTS KLO_LOGFILEEVENTS 6892 6955 7160 KLOLOGPEVT KLO_LOGFILEPROFILEEVENTS 6892 6955 7160 KLOLOGFRX KLO_LOG_FILE_REGEX_STATISTICS 798 856 1178 KLOLOGFST KLO_LOG_FILE_STATUS 688 704 813 KLOPOBJST KLO_PERFORMANCE_OBJECT_STATUS 352 399 664 KLOPROPOS KLO_PRO_PERFORMANCE_OBJECT_STATUS 352 399 664 KLOTHPLST KLO_THREAD_POOL_STATUS 124 168 550
For more information about historical data collection, see Manage historical data in the IBM Tivoli Monitoring Administrator's Guide.
Parent topic:
Attributes reference