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# 2012-04-02 - Added # --source include/have_innodb.inc SET @start_innodb_max_capacity = @@global.innodb_io_capacity_max; SELECT @start_innodb_max_capacity; SET @start_innodb_capacity = @@global.innodb_io_capacity; SELECT @start_innodb_capacity; # # exists as global only # --echo Valid value 100 or more select @@global.innodb_io_capacity_max > 99; select @@global.innodb_io_capacity_max; --error ER_INCORRECT_GLOBAL_LOCAL_VAR select @@session.innodb_io_capacity_max; show global variables like 'innodb_io_capacity_max'; show session variables like 'innodb_io_capacity_max'; --disable_warnings select * from information_schema.global_variables where variable_name='innodb_io_capacity_max'; select * from information_schema.session_variables where variable_name='innodb_io_capacity_max'; --enable_warnings # # show that it's writable. Allowed value cannot be lower than innodb_io_capacity # set global innodb_io_capacity_max=@start_innodb_capacity + 1; select @@global.innodb_io_capacity_max; --disable_warnings select * from information_schema.global_variables where variable_name='innodb_io_capacity_max'; select * from information_schema.session_variables where variable_name='innodb_io_capacity_max'; --enable_warnings --error ER_GLOBAL_VARIABLE set session innodb_io_capacity_max=444; # # incorrect types # --error ER_WRONG_TYPE_FOR_VAR set global innodb_io_capacity_max=1.1; --error ER_WRONG_TYPE_FOR_VAR set global innodb_io_capacity_max=1e1; --error ER_WRONG_TYPE_FOR_VAR set global innodb_io_capacity_max="foo"; --error ER_WRONG_TYPE_FOR_VAR set global innodb_io_capacity_max=" "; # # check the default value # SET @@global.innodb_io_capacity_max = DEFAULT; select @@global.innodb_io_capacity_max IN (18446744073709551615,4294967295); # # can't set it below innodb_io_capacity # set global innodb_io_capacity_max=@start_innodb_capacity - 1; select @@global.innodb_io_capacity_max; --disable_warnings select * from information_schema.global_variables where variable_name='innodb_io_capacity_max'; --enable_warnings set global innodb_io_capacity_max=-7; select @@global.innodb_io_capacity_max; --disable_warnings select * from information_schema.global_variables where variable_name='innodb_io_capacity_max'; --enable_warnings # # min/max values # # first set innodb_io_cpaacity lower set global innodb_io_capacity=100; set global innodb_io_capacity_max=100; select @@global.innodb_io_capacity_max; # # cleanup # SET @@global.innodb_io_capacity_max = @start_innodb_max_capacity; SELECT @@global.innodb_io_capacity_max; SET @@global.innodb_io_capacity = @start_innodb_capacity; SELECT @@global.innodb_io_capacity;