# # Bug#20755430 COST CONSTANT CACHE MUTEX NOT INSTRUMENTED BY # PERFORMANCE SCHEMA # SELECT * FROM performance_schema.setup_instruments WHERE NAME LIKE 'Wait/Synch/Mutex/sql/Cost_constant_cache%'; NAME ENABLED TIMED PROPERTIES VOLATILITY DOCUMENTATION wait/synch/mutex/sql/Cost_constant_cache::LOCK_cost_const YES YES singleton 0 NULL