87 lines
2.8 KiB
Plaintext
87 lines
2.8 KiB
Plaintext
##
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## WL#4818, 4.1.3 MUTEXES, RW-LOCKS, ...
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##
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## Functional testing of mutexes and RW-locks
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##
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UPDATE performance_schema.setup_instruments SET enabled = 'NO', timed = 'YES';
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UPDATE performance_schema.setup_instruments SET enabled = 'YES'
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WHERE name LIKE 'wait/synch/mutex/%'
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OR name LIKE 'wait/synch/rwlock/%';
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# reset lost counters
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truncate table performance_schema.events_statements_summary_by_digest;
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flush status;
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# Make sure objects are instrumented
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select NAME from performance_schema.mutex_instances
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where NAME = 'wait/synch/mutex/sql/LOCK_open';
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--disable_warnings
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DROP TABLE IF EXISTS t1;
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--enable_warnings
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#
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# TODO: Change to InnoDB when it gets instrumentation
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#
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CREATE TABLE t1 (id INT PRIMARY KEY, b CHAR(100) DEFAULT 'initial value')
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ENGINE=MyISAM;
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INSERT INTO t1 (id) VALUES (1), (2), (3), (4), (5), (6), (7), (8);
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#
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# FM1: Count for mutex should increase with instrumentation enabled and
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# FM2: Count for mutex should not increase with instrumentation disabled
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#
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TRUNCATE TABLE performance_schema.events_waits_history_long;
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TRUNCATE TABLE performance_schema.events_waits_history;
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TRUNCATE TABLE performance_schema.events_waits_current;
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SELECT * FROM t1 WHERE id = 1;
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SET @before_count = (SELECT SUM(TIMER_WAIT)
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FROM performance_schema.events_waits_history_long
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WHERE (EVENT_NAME = 'wait/synch/mutex/sql/LOCK_table_cache'));
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SELECT * FROM t1;
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SET @after_count = (SELECT SUM(TIMER_WAIT)
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FROM performance_schema.events_waits_history_long
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WHERE (EVENT_NAME = 'wait/synch/mutex/sql/LOCK_table_cache'));
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SELECT IF((@after_count - @before_count) > 0, 'Success', 'Failure') test_fm1_timed;
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UPDATE performance_schema.setup_instruments SET enabled = 'NO'
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WHERE NAME = 'wait/synch/mutex/sql/LOCK_table_cache';
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TRUNCATE TABLE performance_schema.events_waits_history_long;
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TRUNCATE TABLE performance_schema.events_waits_history;
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TRUNCATE TABLE performance_schema.events_waits_current;
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SELECT * FROM t1 WHERE id = 1;
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SET @before_count = (SELECT SUM(TIMER_WAIT)
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FROM performance_schema.events_waits_history_long
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WHERE (EVENT_NAME = 'wait/synch/mutex/sql/LOCK_table_cache'));
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SELECT * FROM t1;
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SET @after_count = (SELECT SUM(TIMER_WAIT)
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FROM performance_schema.events_waits_history_long
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WHERE (EVENT_NAME = 'wait/synch/mutex/sql/LOCK_table_cache'));
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SELECT IF((COALESCE(@after_count, 0) - COALESCE(@before_count, 0)) = 0, 'Success', 'Failure') test_fm2_timed;
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# Clean-up.
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UPDATE performance_schema.setup_instruments SET enabled = 'YES';
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DROP TABLE t1;
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UPDATE performance_schema.setup_instruments SET enabled = 'YES', timed = 'YES';
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# In case of failure, will indicate the root cause
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show global status like "performance_schema%_lost";
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