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33 lines
1 KiB
Text
33 lines
1 KiB
Text
select count(*) from performance_schema.setup_instruments
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where enabled='YES'
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and name like "wait/%";
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count(*)
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0
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select count(*) > 0 from performance_schema.mutex_instances;
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count(*) > 0
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1
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select count(*) > 0 from performance_schema.rwlock_instances;
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count(*) > 0
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1
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select count(*) > 0 from performance_schema.cond_instances;
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count(*) > 0
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1
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select count(*) > 0 from performance_schema.socket_instances;
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count(*) > 0
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1
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select NAME from performance_schema.mutex_instances
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where NAME = "wait/synch/mutex/sql/LOCK_gdl";
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NAME
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wait/synch/mutex/sql/LOCK_gdl
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select NAME from performance_schema.rwlock_instances
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where NAME = "wait/synch/rwlock/sql/LOCK_system_variables_hash";
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NAME
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wait/synch/rwlock/sql/LOCK_system_variables_hash
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select NAME from performance_schema.cond_instances
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where NAME = "wait/synch/cond/sql/COND_server_started";
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NAME
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wait/synch/cond/sql/COND_server_started
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select EVENT_NAME from performance_schema.socket_instances
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where EVENT_NAME = "wait/io/socket/sql/client_connection";
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EVENT_NAME
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wait/io/socket/sql/client_connection
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