Dumps all Performance Schema data for an instrumented thread
to a .dot
formatted graph file (for the
DOT graph description language). Each result set returned from
the procedure should be used for a complete graph.
This procedure disables binary logging during its execution by
manipulating the session value of the
sql_log_bin
system variable.
That is a restricted operation, so the procedure requires
privileges sufficient to set restricted session variables. See
Section 7.1.9.1, “System Variable Privileges”.
in_thread_id INT
: The thread to trace.in_outfile VARCHAR(255)
: The name to use for the.dot
output file.in_max_runtime DECIMAL(20,2)
: The maximum number of seconds (which can be fractional) to collect data. UseNULL
to collect data for the default of 60 seconds.in_interval DECIMAL(20,2)
: The number of seconds (which can be fractional) to sleep between data collections. UseNULL
to sleep for the default of 1 second.in_start_fresh BOOLEAN
: Whether to reset all Performance Schema data before tracing.in_auto_setup BOOLEAN
: Whether to disable all other threads and enable all instruments and consumers. This also resets the settings at the end of the run.in_debug BOOLEAN
: Whether to includefile:lineno
information in the graph.
mysql> CALL sys.ps_trace_thread(25, CONCAT('/tmp/stack-', REPLACE(NOW(), ' ', '-'), '.dot'), NULL, NULL, TRUE, TRUE, TRUE);
+-------------------+
| summary |
+-------------------+
| Disabled 1 thread |
+-------------------+
1 row in set (0.00 sec)
+---------------------------------------------+
| Info |
+---------------------------------------------+
| Data collection starting for THREAD_ID = 25 |
+---------------------------------------------+
1 row in set (0.03 sec)
+-----------------------------------------------------------+
| Info |
+-----------------------------------------------------------+
| Stack trace written to /tmp/stack-2014-02-16-21:18:41.dot |
+-----------------------------------------------------------+
1 row in set (60.07 sec)
+-------------------------------------------------------------------+
| Convert to PDF |
+-------------------------------------------------------------------+
| dot -Tpdf -o /tmp/stack_25.pdf /tmp/stack-2014-02-16-21:18:41.dot |
+-------------------------------------------------------------------+
1 row in set (60.07 sec)
+-------------------------------------------------------------------+
| Convert to PNG |
+-------------------------------------------------------------------+
| dot -Tpng -o /tmp/stack_25.png /tmp/stack-2014-02-16-21:18:41.dot |
+-------------------------------------------------------------------+
1 row in set (60.07 sec)
+------------------+
| summary |
+------------------+
| Enabled 1 thread |
+------------------+
1 row in set (60.32 sec)