polardbxengine/mysql-test/suite/perfschema/t/start_server_no_rwlock_inst...

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# Tests for PERFORMANCE_SCHEMA
--source ../include/start_server_common.inc
# Expect classes
show global variables like "performance_schema_max_rwlock_classes";
select count(*) > 0 from performance_schema.setup_instruments
where name like "wait/synch/rwlock/%";
# Expect no class lost
show global status like "performance_schema_rwlock_classes_lost";
# Expect no instances
show global variables like "performance_schema_max_rwlock_instances";
select count(*) from performance_schema.rwlock_instances;
# Expect instances lost
--disable_warnings
select variable_value > 0 from performance_schema.global_status
where variable_name like 'PERFORMANCE_SCHEMA_RWLOCK_INSTANCES_LOST';
--enable_warnings