select * from performance_schema.FILE_SUMMARY_BY_INSTANCE
where event_name like 'Wait/io/%' limit 1;
FILE_NAME	EVENT_NAME	COUNT_READ	COUNT_WRITE	SUM_NUMBER_OF_BYTES_READ	SUM_NUMBER_OF_BYTES_WRITE
#	#	#	#	#	#
select * from performance_schema.FILE_SUMMARY_BY_INSTANCE
where event_name='FOO';
FILE_NAME	EVENT_NAME	COUNT_READ	COUNT_WRITE	SUM_NUMBER_OF_BYTES_READ	SUM_NUMBER_OF_BYTES_WRITE
insert into performance_schema.FILE_SUMMARY_BY_INSTANCE
set event_name='FOO', count_read=1, count_write=2,
sum_number_of_bytes_read=4, sum_number_of_bytes_write=5;
ERROR 42000: INSERT command denied to user 'root'@'localhost' for table 'FILE_SUMMARY_BY_INSTANCE'
update performance_schema.FILE_SUMMARY_BY_INSTANCE
set count_read=12;
ERROR 42000: UPDATE command denied to user 'root'@'localhost' for table 'FILE_SUMMARY_BY_INSTANCE'
update performance_schema.FILE_SUMMARY_BY_INSTANCE
set count_write=12 where event_name like "FOO";
ERROR 42000: UPDATE command denied to user 'root'@'localhost' for table 'FILE_SUMMARY_BY_INSTANCE'
delete from performance_schema.FILE_SUMMARY_BY_INSTANCE
where count_read=1;
ERROR 42000: DELETE command denied to user 'root'@'localhost' for table 'FILE_SUMMARY_BY_INSTANCE'
delete from performance_schema.FILE_SUMMARY_BY_INSTANCE;
ERROR 42000: DELETE command denied to user 'root'@'localhost' for table 'FILE_SUMMARY_BY_INSTANCE'
LOCK TABLES performance_schema.FILE_SUMMARY_BY_INSTANCE READ;
ERROR 42000: SELECT,LOCK TABL command denied to user 'root'@'localhost' for table 'FILE_SUMMARY_BY_INSTANCE'
UNLOCK TABLES;
LOCK TABLES performance_schema.FILE_SUMMARY_BY_INSTANCE WRITE;
ERROR 42000: SELECT,LOCK TABL command denied to user 'root'@'localhost' for table 'FILE_SUMMARY_BY_INSTANCE'
UNLOCK TABLES;