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39 lines
1.5 KiB
Text
39 lines
1.5 KiB
Text
use performance_schema;
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update performance_schema.setup_instruments set enabled='YES';
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create user pfsuser@localhost;
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grant SELECT, UPDATE, LOCK TABLES on performance_schema.* to pfsuser@localhost;
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flush privileges;
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connect con1, localhost, pfsuser, ,"*NO-ONE*";
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lock tables performance_schema.setup_instruments read;
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select * from performance_schema.setup_instruments;
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unlock tables;
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lock tables performance_schema.setup_instruments write;
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update performance_schema.setup_instruments set enabled='NO';
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update performance_schema.setup_instruments set enabled='YES';
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unlock tables;
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connection default;
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flush tables with read lock;
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connection con1;
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lock tables performance_schema.setup_instruments read;
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select * from performance_schema.setup_instruments;
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unlock tables;
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lock tables performance_schema.setup_instruments write;
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connection default;
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select event_name,
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left(source, locate(":", source)) as short_source,
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if(timer_end IS NULL, NULL, "SET") as timer_end,
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if(timer_wait IS NULL, NULL, "SET") as timer_wait,
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operation
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from performance_schema.events_waits_current
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where event_name like "wait/synch/cond/sql/MDL_context::COND_wait_status";
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event_name short_source timer_end timer_wait operation
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wait/synch/cond/sql/MDL_context::COND_wait_status SET SET timed_wait
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unlock tables;
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connection con1;
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update performance_schema.setup_instruments set enabled='NO';
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update performance_schema.setup_instruments set enabled='YES';
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unlock tables;
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disconnect con1;
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connection default;
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drop user pfsuser@localhost;
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flush privileges;
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