Instance pool activity includes the following statistics:
| Statistic | Description | 
|---|---|
| Active Count | The number of active instances in the pool | 
| Discard Count | The number of instances that have been discarded from the pool | 
| Passive Count | The number of instances in the pool that are idle. | 
| Pool Size | The number of instances in the pool, active or inactive | 
| Pool Timeout | The number of instances that have timed out of the pool |