# Performance Schema events\_waits\_current Table

The `events_waits_current` table contains the status of a thread's most recently monitored wait event, listing one event per thread.

The table contains the following columns:

| Column                  | Description                                                                                                                                            |
| ----------------------- | ------------------------------------------------------------------------------------------------------------------------------------------------------ |
| THREAD\_ID              | Thread associated with the event. Together with EVENT\_ID uniquely identifies the row.                                                                 |
| EVENT\_ID               | Thread's current event number at the start of the event. Together with THREAD\_ID uniquely identifies the row.                                         |
| END\_EVENT\_ID          | NULL when the event starts, set to the thread's current event number at the end of the event.                                                          |
| EVENT\_NAME             | Event instrument name and a NAME from the setup\_instruments table                                                                                     |
| SOURCE                  | Name and line number of the source file containing the instrumented code that produced the event.                                                      |
| TIMER\_START            | Value in picoseconds when the event timing started or NULL if timing is not collected.                                                                 |
| TIMER\_END              | Value in picoseconds when the event timing ended, or NULL if the event has not ended or timing is not collected.                                       |
| TIMER\_WAIT             | Value in picoseconds of the event's duration or NULL if the event has not ended or timing is not collected.                                            |
| SPINS                   | Number of spin rounds for a mutex, or NULL if spin rounds are not used, or spinning is not instrumented.                                               |
| OBJECT\_SCHEMA          | Name of the schema that contains the table for table I/O objects, otherwise NULL for file I/O and synchronization objects.                             |
| OBJECT\_NAME            | File name for file I/O objects, table name for table I/O objects, the socket's IP:PORT value for a socket object or NULL for a synchronization object. |
| INDEX NAME              | Name of the index, PRIMARY for the primary key, or NULL for no index used.                                                                             |
| OBJECT\_TYPE            | FILE for a file object, TABLE or TEMPORARY TABLE for a table object, or NULL for a synchronization object.                                             |
| OBJECT\_INSTANCE\_BEGIN | Address in memory of the object.                                                                                                                       |
| NESTING\_EVENT\_ID      | EVENT\_ID of event within which this event nests.                                                                                                      |
| NESTING\_EVENT\_TYPE    | Nesting event type. Either statement, stage or wait.                                                                                                   |
| OPERATION               | Operation type, for example read, write or lock                                                                                                        |
| NUMBER\_OF\_BYTES       | Number of bytes that the operation read or wrote, or NULL for table I/O waits.                                                                         |
| FLAGS                   | Reserved for use in the future.                                                                                                                        |

It is possible to empty this table with a `TRUNCATE TABLE` statement.

The related tables, [events\_waits\_history](/docs/server/reference/system-tables/performance-schema/performance-schema-tables/performance-schema-events_waits_history-table.md) and [events\_waits\_history\_long](/docs/server/reference/system-tables/performance-schema/performance-schema-tables/performance-schema-events_waits_history_long-table.md) derive their values from the current events.

<sub>*This page is licensed: CC BY-SA / Gnu FDL*</sub>

{% @marketo/form formId="4316" %}


---

# Agent Instructions: Querying This Documentation

If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter:

```
GET https://mariadb.com/docs/server/reference/system-tables/performance-schema/performance-schema-tables/performance-schema-events_waits_current-table.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.