26.4.5.16 The ps_thread_stack() Function

Returns a JSON formatted stack of all statements, stages, and events within the Performance Schema for a given thread ID.

Parameters

• in_thread_id BIGINT: The ID of the thread to trace. The value should match the THREAD_ID column from some Performance Schema threads table row.

• in_verbose BOOLEAN: Whether to include file:lineno information in the events.

Return Value

A LONGTEXT CHARACTER SET latin1 value.

Example

mysql> SELECT sys.ps_thread_stack(37, FALSE) AS thread_stack\G
*************************** 1. row ***************************
thread_stack: {"rankdir": "LR","nodesep": "0.10",
"stack_created": "2014-02-19 13:39:03", "mysql_version": "5.7.3-m13",
"mysql_user": "root@localhost","events": [{"nesting_event_id": "0",
"event_id": "10", "timer_wait": 256.35, "event_info": "sql/select",
"wait_info": "select @@version_comment limit 1\nerrors: 0\nwarnings: 0\nlock time:
...