Performance Schema Activity Metrics
Lists the Performance Schema Activity metrics and provides a brief description of each.
| Name | Description |
|---|---|
| Cond Classes Lost (Delta) | How many instruments of type cond could not be loaded. |
| Cond Instances Lost (Delta) | How many instances of object type cond could not be created. |
| File Classes Lost (Delta) | How many instruments of type file could not be loaded. |
| File Handles Lost (Delta) | How many instances of object type file could not be opened. |
| File Instances Lost (Delta) | How many instances of object type file could not be created. |
| Hosts Lost (Delta) | How many hosts were lost. |
| Index Stat Lost (Delta) | The number of indexes for which statistics were lost. |
| Locker Lost (Delta) | How many events are lost or not recorded. |
| Memory Classes Lost (Delta) | The number of times a memory instrument could not be loaded. |
| Metadata Lock Lost (Delta) | The number of metadata locks that could not be instrumented in the metadata_locks table. |
| Mutex Classes Lost (Delta) | How many instruments of type mutex could not be loaded. |
| Mutex Instances Lost (Delta) | How many instances of object type mutest could not be created. |
| Nested Statement Lost (Delta) | The number of stored program statements for which statistics were lost. |
| Prepared Statements Lost (Delta) | The number of prepared statements that could not be instrumented in the prepared_statements_instances table. |
| Program Lost (Delta) | The number of stored programs for which statistics were lost. |
| Rwlock Classes Lost (Delta) | How many instruments of type rwlock could not be loaded. |
| Rwlock Instances Lost (Delta) | How many instances of object type rwlock could not be created. |
| Session Connect Attrs Longest Seen (Delta) | The longest valid attribute buffer size that was tracked. |
| Table Handles Lost (Delta) | How many instances of object type table could not be opened. |
| Table Instances Lost (Delta) | How many instances of object type table could not be created. |
| Table Lock Stat Lost (Delta) | The number of tables for which lock statistics were lost. |
| Thread Classes Lost (Delta) | How many instruments of type thread could not be loaded. |
| Thread Instances Lost (Delta) | How many instances of object type thread could not be created. |