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ca0c96fc89
MDEV--15609 engines/funcs.crash_manytables_number crashes with error 24
(too many open files)
MDEV-10286 Adjustment of table_open_cache according to system limits
does not work when open-files-limit option is provided
Fixed by adjusting tc_size downwards if there is not enough file
descriptors to use.
Other changes:
- Ensure that there is 30 (was 10) extra file descriptors for other usage
- Decrease TABLE_OPEN_CACHE_MIN to 200 as it's better to have a smaller
table cache than getting error 24
- Increase minimum of max_connections and table_open_cache from 1 to 10
as 1 is not usable for any real application, only for testing.
114 lines
4.2 KiB
Plaintext
114 lines
4.2 KiB
Plaintext
SET @start_value = @@global.table_open_cache ;
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SELECT @start_value;
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@start_value
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421
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'#--------------------FN_DYNVARS_001_01------------------------#'
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SET @@global.table_open_cache = 99;
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SET @@global.table_open_cache = DeFAULT;
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SELECT @@global.table_open_cache;
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@@global.table_open_cache
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2000
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'#---------------------FN_DYNVARS_001_02-------------------------#'
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SET @@global.table_open_cache = Default;
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SELECT @@global.table_open_cache = 400;
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@@global.table_open_cache = 400
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0
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'#--------------------FN_DYNVARS_001_03------------------------#'
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SET @@global.table_open_cache = 8;
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Warnings:
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Warning 1292 Truncated incorrect table_open_cache value: '8'
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SELECT @@global.table_open_cache ;
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@@global.table_open_cache
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10
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SET @@global.table_open_cache = 1;
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Warnings:
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Warning 1292 Truncated incorrect table_open_cache value: '1'
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SELECT @@global.table_open_cache ;
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@@global.table_open_cache
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10
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SET @@global.table_open_cache = 1073741824;
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Warnings:
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Warning 1292 Truncated incorrect table_open_cache value: '1073741824'
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SELECT @@global.table_open_cache ;
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@@global.table_open_cache
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1048576
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SET @@global.table_open_cache = 18000;
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SELECT @@global.table_open_cache ;
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@@global.table_open_cache
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18000
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SET @@global.table_open_cache = 65535;
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SELECT @@global.table_open_cache ;
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@@global.table_open_cache
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65535
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'#--------------------FN_DYNVARS_001_04-------------------------#'
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SET @@global.table_open_cache = -1;
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Warnings:
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Warning 1292 Truncated incorrect table_open_cache value: '-1'
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SELECT @@global.table_open_cache ;
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@@global.table_open_cache
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10
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SET @@global.table_open_cache = 100000000000;
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Warnings:
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Warning 1292 Truncated incorrect table_open_cache value: '100000000000'
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SELECT @@global.table_open_cache ;
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@@global.table_open_cache
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1048576
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SET @@global.table_open_cache = -1024;
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Warnings:
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Warning 1292 Truncated incorrect table_open_cache value: '-1024'
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SELECT @@global.table_open_cache ;
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@@global.table_open_cache
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10
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SET @@global.table_open_cache = 0;
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Warnings:
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Warning 1292 Truncated incorrect table_open_cache value: '0'
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SELECT @@global.table_open_cache ;
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@@global.table_open_cache
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10
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SET @@global.table_open_cache = 10000.01;
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ERROR 42000: Incorrect argument type to variable 'table_open_cache'
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SET @@global.table_open_cache = ON;
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ERROR 42000: Incorrect argument type to variable 'table_open_cache'
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SET @@global.table_open_cache= 'test';
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ERROR 42000: Incorrect argument type to variable 'table_open_cache'
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SET @@global.table_open_cache = '';
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ERROR 42000: Incorrect argument type to variable 'table_open_cache'
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'#-------------------FN_DYNVARS_001_05----------------------------#'
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SET @@session.table_open_cache = 0;
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ERROR HY000: Variable 'table_open_cache' is a GLOBAL variable and should be set with SET GLOBAL
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'#----------------------FN_DYNVARS_001_06------------------------#'
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SELECT @@global.table_open_cache = VARIABLE_VALUE FROM INFORMATION_SCHEMA.GLOBAL_VARIABLES WHERE VARIABLE_NAME='table_open_cache ';
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@@global.table_open_cache = VARIABLE_VALUE
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1
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'#---------------------FN_DYNVARS_001_09----------------------#'
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SET @@global.table_open_cache = TRUE;
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Warnings:
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Warning 1292 Truncated incorrect table_open_cache value: '1'
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SELECT @@global.table_open_cache ;
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@@global.table_open_cache
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10
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SET @@global.table_open_cache = FALSE;
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Warnings:
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Warning 1292 Truncated incorrect table_open_cache value: '0'
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SELECT @@global.table_open_cache ;
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@@global.table_open_cache
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10
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'#---------------------FN_DYNVARS_001_10----------------------#'
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SET @@global.table_open_cache = 10;
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SELECT @@table_open_cache = @@global.table_open_cache ;
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@@table_open_cache = @@global.table_open_cache
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1
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'#---------------------FN_DYNVARS_001_11----------------------#'
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SET table_open_cache = 8;
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ERROR HY000: Variable 'table_open_cache' is a GLOBAL variable and should be set with SET GLOBAL
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SET global.table_open_cache = 10;
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ERROR 42000: You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use near 'table_open_cache = 10' at line 1
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SELECT global.table_open_cache ;
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ERROR 42S02: Unknown table 'global' in field list
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SELECT table_open_cache = @@session.table_open_cache ;
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ERROR 42S22: Unknown column 'table_open_cache' in 'field list'
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SET @@global.table_open_cache = @start_value;
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SELECT @@global.table_open_cache ;
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@@global.table_open_cache
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421
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