Data Warehouse
The Data Warehouse tab allows you to configure attributes for the BMC TrueSight Capacity Optimization Warehousing engine. This launches multiple threads for the warehousing activities. You can access this tab by navigating to Administration > System > Global configuration > Data Warehouse.
BMC TrueSight Capacity Optimization data warehousing activities are executed within Datahub component through (Near-Real-Time) Warehousing Engine (NRT WH). The NRT WH stores, organizes, and calculates statistics for collected data.
Option | Description |
|---|---|
Number of spare threads | Maximum number of concurrent threads activated by the warehousing process and dispatched among queued requests. |
Sleep period | Period (in milliseconds) between subsequent polling, when the executor of the activity is in sleep mode. |
Freshness timeout | Minimum interval between processing of the same series in the same step. You can use to avoid multiple reduction of the same series within the day. |
Limit | Maximum number of active threads for the step. |
Reserved | Number of reserved/dedicated threads to the step. Reserved threads are permanently available without requiring spare threads. |
Weight | Weight assigned to a step. In case of contention on spare threads, you can use weight to prioritize the assignment. |
Each attribute can be specified using an inheritance/override mechanism.
The primary way to tune Data Warehouse configuration is to only change the number of Spare threads. It is recommended that you retain the default values for the Reserved threads.
Default values for the available options for the thread launchers are as follows:
Number of Spare Threads: 20
| Thread launcher | Sleep period | Freshness Timeout | Limit | Reserved |
|---|---|---|---|---|
| Store (store) | 5 min | 0 | 50%*spare | 0 |
| Warehouse (wh) | 10 min | 15 min | 40%*spare | 0 |
| Reduce (red) | 10 min | 8 hours | 50%*spare | 0 |
| Configuration Metrics (conf) | 1 min | 1 hour | 40%*spare | 0 |
| Custom Statistic (cs) | 10 min | 8 hours | 15%*spare | 0 |
| External Custom Statistic (ecs) | 10 min | 5 min | 30%*spare | 0 |
| Raw (raw) | 1 min | 30 sec | 30%*spare | 0 |
Comments
Log in or register to comment.