The Ultimate Guide to High Availability with MariaDB

ps_is_thread_instrumented

Syntax

sys.ps_is_thread_instrumented(connection_id)

Description

ps_is_thread_instrumented is a stored function available with the Sys Schema that returns whether or not Performance Schema instrumentation for the given connection_id is enabled.

  • YES - instrumentation is enabled
  • NO - instrumentation is not enabled
  • UNKNOWN - the connection ID is unknown
  • NULL - NULL value

Examples

SELECT sys.ps_is_thread_instrumented(CONNECTION_ID());
+------------------------------------------------+
| sys.ps_is_thread_instrumented(CONNECTION_ID()) |
+------------------------------------------------+
| YES                                            |
+------------------------------------------------+

SELECT sys.ps_is_thread_instrumented(2042);
+-------------------------------------+
| sys.ps_is_thread_instrumented(2042) |
+-------------------------------------+
| UNKNOWN                             |
+-------------------------------------+

SELECT sys.ps_is_thread_instrumented(NULL);
+-------------------------------------+
| sys.ps_is_thread_instrumented(NULL) |
+-------------------------------------+
| NULL                                |
+-------------------------------------+

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