> For the complete documentation index, see [llms.txt](https://mariadb.com/docs/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://mariadb.com/docs/server/reference/system-tables/performance-schema/performance-schema-tables/performance-schema-cond_instances-table.md).

# Performance Schema cond\_instances Table

## Description

The `cond_instances` table lists all conditions while the server is executing. A condition, or instrumented condition object, is an internal code mechanism used for signalling that a specific event has occurred so that any threads waiting for this condition can continue.

The maximum number of conditions stored in the performance schema is determined by the [performance\_schema\_max\_cond\_instances](/docs/server/reference/system-tables/performance-schema/performance-schema-system-variables.md#performance_schema_max_cond_instances) system variable.

| Column                  | Description                                                         |
| ----------------------- | ------------------------------------------------------------------- |
| NAME                    | Client user name for the connection, or NULL if an internal thread. |
| OBJECT\_INSTANCE\_BEGIN | Address in memory of the instrumented condition.                    |

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