sysvars_innodb.result 68 KB
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select * from information_schema.system_variables
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where variable_name like 'innodb%' and
variable_name not in (
'innodb_disallow_writes',           # only available WITH_WSREP
'innodb_sched_priority_cleaner',    # linux only
'innodb_use_native_aio')            # default value depends on OS
order by variable_name;
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VARIABLE_NAME	INNODB_ADAPTIVE_FLUSHING
SESSION_VALUE	NULL
GLOBAL_VALUE	ON
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GLOBAL_VALUE_ORIGIN	COMPILE-TIME
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DEFAULT_VALUE	ON
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	BOOLEAN
VARIABLE_COMMENT	Attempt flushing dirty pages to avoid IO bursts at checkpoints.
NUMERIC_MIN_VALUE	NULL
NUMERIC_MAX_VALUE	NULL
NUMERIC_BLOCK_SIZE	NULL
ENUM_VALUE_LIST	NULL
READ_ONLY	NO
COMMAND_LINE_ARGUMENT	NONE
VARIABLE_NAME	INNODB_ADAPTIVE_FLUSHING_LWM
SESSION_VALUE	NULL
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GLOBAL_VALUE	10.000000
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GLOBAL_VALUE_ORIGIN	COMPILE-TIME
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DEFAULT_VALUE	10.000000
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VARIABLE_SCOPE	GLOBAL
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VARIABLE_TYPE	DOUBLE
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VARIABLE_COMMENT	Percentage of log capacity below which no adaptive flushing happens.
NUMERIC_MIN_VALUE	0
NUMERIC_MAX_VALUE	70
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NUMERIC_BLOCK_SIZE	NULL
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ENUM_VALUE_LIST	NULL
READ_ONLY	NO
COMMAND_LINE_ARGUMENT	REQUIRED
VARIABLE_NAME	INNODB_ADAPTIVE_HASH_INDEX
SESSION_VALUE	NULL
GLOBAL_VALUE	ON
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GLOBAL_VALUE_ORIGIN	COMPILE-TIME
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DEFAULT_VALUE	ON
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	BOOLEAN
VARIABLE_COMMENT	Enable InnoDB adaptive hash index (enabled by default).  Disable with --skip-innodb-adaptive-hash-index.
NUMERIC_MIN_VALUE	NULL
NUMERIC_MAX_VALUE	NULL
NUMERIC_BLOCK_SIZE	NULL
ENUM_VALUE_LIST	NULL
READ_ONLY	NO
COMMAND_LINE_ARGUMENT	OPTIONAL
VARIABLE_NAME	INNODB_ADAPTIVE_MAX_SLEEP_DELAY
SESSION_VALUE	NULL
GLOBAL_VALUE	150000
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GLOBAL_VALUE_ORIGIN	COMPILE-TIME
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DEFAULT_VALUE	150000
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	BIGINT UNSIGNED
VARIABLE_COMMENT	The upper limit of the sleep delay in usec. Value of 0 disables it.
NUMERIC_MIN_VALUE	0
NUMERIC_MAX_VALUE	1000000
NUMERIC_BLOCK_SIZE	0
ENUM_VALUE_LIST	NULL
READ_ONLY	NO
COMMAND_LINE_ARGUMENT	REQUIRED
VARIABLE_NAME	INNODB_ADDITIONAL_MEM_POOL_SIZE
SESSION_VALUE	NULL
GLOBAL_VALUE	8388608
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GLOBAL_VALUE_ORIGIN	COMPILE-TIME
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DEFAULT_VALUE	8388608
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	BIGINT
VARIABLE_COMMENT	DEPRECATED. This option may be removed in future releases, together with the option innodb_use_sys_malloc and with the InnoDB's internal memory allocator. Size of a memory pool InnoDB uses to store data dictionary information and other internal data structures.
NUMERIC_MIN_VALUE	524288
NUMERIC_MAX_VALUE	9223372036854775807
NUMERIC_BLOCK_SIZE	1024
ENUM_VALUE_LIST	NULL
READ_ONLY	YES
COMMAND_LINE_ARGUMENT	REQUIRED
VARIABLE_NAME	INNODB_API_BK_COMMIT_INTERVAL
SESSION_VALUE	NULL
GLOBAL_VALUE	5
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GLOBAL_VALUE_ORIGIN	COMPILE-TIME
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DEFAULT_VALUE	5
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	BIGINT UNSIGNED
VARIABLE_COMMENT	Background commit interval in seconds
NUMERIC_MIN_VALUE	1
NUMERIC_MAX_VALUE	1073741824
NUMERIC_BLOCK_SIZE	0
ENUM_VALUE_LIST	NULL
READ_ONLY	NO
COMMAND_LINE_ARGUMENT	OPTIONAL
VARIABLE_NAME	INNODB_API_DISABLE_ROWLOCK
SESSION_VALUE	NULL
GLOBAL_VALUE	OFF
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GLOBAL_VALUE_ORIGIN	COMPILE-TIME
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DEFAULT_VALUE	OFF
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	BOOLEAN
VARIABLE_COMMENT	Disable row lock when direct access InnoDB through InnoDB APIs
NUMERIC_MIN_VALUE	NULL
NUMERIC_MAX_VALUE	NULL
NUMERIC_BLOCK_SIZE	NULL
ENUM_VALUE_LIST	NULL
READ_ONLY	YES
COMMAND_LINE_ARGUMENT	NONE
VARIABLE_NAME	INNODB_API_ENABLE_BINLOG
SESSION_VALUE	NULL
GLOBAL_VALUE	OFF
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GLOBAL_VALUE_ORIGIN	COMPILE-TIME
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DEFAULT_VALUE	OFF
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	BOOLEAN
VARIABLE_COMMENT	Enable binlog for applications direct access InnoDB through InnoDB APIs
NUMERIC_MIN_VALUE	NULL
NUMERIC_MAX_VALUE	NULL
NUMERIC_BLOCK_SIZE	NULL
ENUM_VALUE_LIST	NULL
READ_ONLY	YES
COMMAND_LINE_ARGUMENT	NONE
VARIABLE_NAME	INNODB_API_ENABLE_MDL
SESSION_VALUE	NULL
GLOBAL_VALUE	OFF
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GLOBAL_VALUE_ORIGIN	COMPILE-TIME
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DEFAULT_VALUE	OFF
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	BOOLEAN
VARIABLE_COMMENT	Enable MDL for applications direct access InnoDB through InnoDB APIs
NUMERIC_MIN_VALUE	NULL
NUMERIC_MAX_VALUE	NULL
NUMERIC_BLOCK_SIZE	NULL
ENUM_VALUE_LIST	NULL
READ_ONLY	YES
COMMAND_LINE_ARGUMENT	NONE
VARIABLE_NAME	INNODB_API_TRX_LEVEL
SESSION_VALUE	NULL
GLOBAL_VALUE	0
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GLOBAL_VALUE_ORIGIN	COMPILE-TIME
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DEFAULT_VALUE	0
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	BIGINT UNSIGNED
VARIABLE_COMMENT	InnoDB API transaction isolation level
NUMERIC_MIN_VALUE	0
NUMERIC_MAX_VALUE	3
NUMERIC_BLOCK_SIZE	0
ENUM_VALUE_LIST	NULL
READ_ONLY	NO
COMMAND_LINE_ARGUMENT	OPTIONAL
VARIABLE_NAME	INNODB_AUTOEXTEND_INCREMENT
SESSION_VALUE	NULL
GLOBAL_VALUE	64
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GLOBAL_VALUE_ORIGIN	COMPILE-TIME
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DEFAULT_VALUE	64
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	BIGINT UNSIGNED
VARIABLE_COMMENT	Data file autoextend increment in megabytes
NUMERIC_MIN_VALUE	1
NUMERIC_MAX_VALUE	1000
NUMERIC_BLOCK_SIZE	0
ENUM_VALUE_LIST	NULL
READ_ONLY	NO
COMMAND_LINE_ARGUMENT	REQUIRED
VARIABLE_NAME	INNODB_AUTOINC_LOCK_MODE
SESSION_VALUE	NULL
GLOBAL_VALUE	1
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GLOBAL_VALUE_ORIGIN	COMPILE-TIME
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DEFAULT_VALUE	1
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	BIGINT
VARIABLE_COMMENT	The AUTOINC lock modes supported by InnoDB:               0 => Old style AUTOINC locking (for backward compatibility)                                           1 => New style AUTOINC locking                            2 => No AUTOINC locking (unsafe for SBR)
NUMERIC_MIN_VALUE	0
NUMERIC_MAX_VALUE	2
NUMERIC_BLOCK_SIZE	0
ENUM_VALUE_LIST	NULL
READ_ONLY	YES
COMMAND_LINE_ARGUMENT	REQUIRED
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VARIABLE_NAME	INNODB_BACKGROUND_SCRUB_DATA_CHECK_INTERVAL
SESSION_VALUE	NULL
GLOBAL_VALUE	3600
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
DEFAULT_VALUE	3600
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	INT UNSIGNED
VARIABLE_COMMENT	check if spaces needs scrubbing every innodb_background_scrub_data_check_interval seconds
NUMERIC_MIN_VALUE	1
NUMERIC_MAX_VALUE	4294967295
NUMERIC_BLOCK_SIZE	0
ENUM_VALUE_LIST	NULL
READ_ONLY	NO
COMMAND_LINE_ARGUMENT	REQUIRED
VARIABLE_NAME	INNODB_BACKGROUND_SCRUB_DATA_COMPRESSED
SESSION_VALUE	NULL
GLOBAL_VALUE	OFF
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
DEFAULT_VALUE	OFF
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	BOOLEAN
VARIABLE_COMMENT	Enable scrubbing of compressed data by background threads (same as encryption_threads)
NUMERIC_MIN_VALUE	NULL
NUMERIC_MAX_VALUE	NULL
NUMERIC_BLOCK_SIZE	NULL
ENUM_VALUE_LIST	NULL
READ_ONLY	NO
COMMAND_LINE_ARGUMENT	REQUIRED
VARIABLE_NAME	INNODB_BACKGROUND_SCRUB_DATA_INTERVAL
SESSION_VALUE	NULL
GLOBAL_VALUE	604800
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
DEFAULT_VALUE	604800
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	INT UNSIGNED
VARIABLE_COMMENT	scrub spaces that were last scrubbed longer than  innodb_background_scrub_data_interval seconds ago
NUMERIC_MIN_VALUE	1
NUMERIC_MAX_VALUE	4294967295
NUMERIC_BLOCK_SIZE	0
ENUM_VALUE_LIST	NULL
READ_ONLY	NO
COMMAND_LINE_ARGUMENT	REQUIRED
VARIABLE_NAME	INNODB_BACKGROUND_SCRUB_DATA_UNCOMPRESSED
SESSION_VALUE	NULL
GLOBAL_VALUE	OFF
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
DEFAULT_VALUE	OFF
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	BOOLEAN
VARIABLE_COMMENT	Enable scrubbing of uncompressed data by background threads (same as encryption_threads)
NUMERIC_MIN_VALUE	NULL
NUMERIC_MAX_VALUE	NULL
NUMERIC_BLOCK_SIZE	NULL
ENUM_VALUE_LIST	NULL
READ_ONLY	NO
COMMAND_LINE_ARGUMENT	REQUIRED
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VARIABLE_NAME	INNODB_BUFFER_POOL_DUMP_AT_SHUTDOWN
SESSION_VALUE	NULL
GLOBAL_VALUE	OFF
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GLOBAL_VALUE_ORIGIN	COMPILE-TIME
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DEFAULT_VALUE	OFF
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	BOOLEAN
VARIABLE_COMMENT	Dump the buffer pool into a file named @@innodb_buffer_pool_filename
NUMERIC_MIN_VALUE	NULL
NUMERIC_MAX_VALUE	NULL
NUMERIC_BLOCK_SIZE	NULL
ENUM_VALUE_LIST	NULL
READ_ONLY	NO
COMMAND_LINE_ARGUMENT	REQUIRED
VARIABLE_NAME	INNODB_BUFFER_POOL_DUMP_NOW
SESSION_VALUE	NULL
GLOBAL_VALUE	OFF
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GLOBAL_VALUE_ORIGIN	COMPILE-TIME
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DEFAULT_VALUE	OFF
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	BOOLEAN
VARIABLE_COMMENT	Trigger an immediate dump of the buffer pool into a file named @@innodb_buffer_pool_filename
NUMERIC_MIN_VALUE	NULL
NUMERIC_MAX_VALUE	NULL
NUMERIC_BLOCK_SIZE	NULL
ENUM_VALUE_LIST	NULL
READ_ONLY	NO
COMMAND_LINE_ARGUMENT	REQUIRED
VARIABLE_NAME	INNODB_BUFFER_POOL_EVICT
SESSION_VALUE	NULL
GLOBAL_VALUE	
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GLOBAL_VALUE_ORIGIN	COMPILE-TIME
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DEFAULT_VALUE	
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	VARCHAR
VARIABLE_COMMENT	Evict pages from the buffer pool
NUMERIC_MIN_VALUE	NULL
NUMERIC_MAX_VALUE	NULL
NUMERIC_BLOCK_SIZE	NULL
ENUM_VALUE_LIST	NULL
READ_ONLY	NO
COMMAND_LINE_ARGUMENT	REQUIRED
VARIABLE_NAME	INNODB_BUFFER_POOL_FILENAME
SESSION_VALUE	NULL
GLOBAL_VALUE	ib_buffer_pool
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GLOBAL_VALUE_ORIGIN	COMPILE-TIME
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DEFAULT_VALUE	ib_buffer_pool
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	VARCHAR
VARIABLE_COMMENT	Filename to/from which to dump/load the InnoDB buffer pool
NUMERIC_MIN_VALUE	NULL
NUMERIC_MAX_VALUE	NULL
NUMERIC_BLOCK_SIZE	NULL
ENUM_VALUE_LIST	NULL
READ_ONLY	NO
COMMAND_LINE_ARGUMENT	REQUIRED
VARIABLE_NAME	INNODB_BUFFER_POOL_INSTANCES
SESSION_VALUE	NULL
GLOBAL_VALUE	8
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GLOBAL_VALUE_ORIGIN	COMPILE-TIME
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DEFAULT_VALUE	0
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	BIGINT
VARIABLE_COMMENT	Number of buffer pool instances, set to higher value on high-end machines to increase scalability
NUMERIC_MIN_VALUE	0
NUMERIC_MAX_VALUE	64
NUMERIC_BLOCK_SIZE	1
ENUM_VALUE_LIST	NULL
READ_ONLY	YES
COMMAND_LINE_ARGUMENT	REQUIRED
VARIABLE_NAME	INNODB_BUFFER_POOL_LOAD_ABORT
SESSION_VALUE	NULL
GLOBAL_VALUE	OFF
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GLOBAL_VALUE_ORIGIN	COMPILE-TIME
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DEFAULT_VALUE	OFF
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	BOOLEAN
VARIABLE_COMMENT	Abort a currently running load of the buffer pool
NUMERIC_MIN_VALUE	NULL
NUMERIC_MAX_VALUE	NULL
NUMERIC_BLOCK_SIZE	NULL
ENUM_VALUE_LIST	NULL
READ_ONLY	NO
COMMAND_LINE_ARGUMENT	REQUIRED
VARIABLE_NAME	INNODB_BUFFER_POOL_LOAD_AT_STARTUP
SESSION_VALUE	NULL
GLOBAL_VALUE	OFF
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GLOBAL_VALUE_ORIGIN	COMPILE-TIME
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DEFAULT_VALUE	OFF
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	BOOLEAN
VARIABLE_COMMENT	Load the buffer pool from a file named @@innodb_buffer_pool_filename
NUMERIC_MIN_VALUE	NULL
NUMERIC_MAX_VALUE	NULL
NUMERIC_BLOCK_SIZE	NULL
ENUM_VALUE_LIST	NULL
READ_ONLY	YES
COMMAND_LINE_ARGUMENT	REQUIRED
VARIABLE_NAME	INNODB_BUFFER_POOL_LOAD_NOW
SESSION_VALUE	NULL
GLOBAL_VALUE	OFF
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GLOBAL_VALUE_ORIGIN	COMPILE-TIME
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DEFAULT_VALUE	OFF
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	BOOLEAN
VARIABLE_COMMENT	Trigger an immediate load of the buffer pool from a file named @@innodb_buffer_pool_filename
NUMERIC_MIN_VALUE	NULL
NUMERIC_MAX_VALUE	NULL
NUMERIC_BLOCK_SIZE	NULL
ENUM_VALUE_LIST	NULL
READ_ONLY	NO
COMMAND_LINE_ARGUMENT	REQUIRED
VARIABLE_NAME	INNODB_BUFFER_POOL_SIZE
SESSION_VALUE	NULL
GLOBAL_VALUE	8388608
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GLOBAL_VALUE_ORIGIN	CONFIG
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DEFAULT_VALUE	134217728
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	BIGINT
VARIABLE_COMMENT	The size of the memory buffer InnoDB uses to cache data and indexes of its tables.
NUMERIC_MIN_VALUE	5242880
NUMERIC_MAX_VALUE	9223372036854775807
NUMERIC_BLOCK_SIZE	1048576
ENUM_VALUE_LIST	NULL
READ_ONLY	YES
COMMAND_LINE_ARGUMENT	REQUIRED
VARIABLE_NAME	INNODB_BUF_FLUSH_LIST_NOW
SESSION_VALUE	NULL
GLOBAL_VALUE	OFF
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GLOBAL_VALUE_ORIGIN	COMPILE-TIME
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DEFAULT_VALUE	OFF
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	BOOLEAN
VARIABLE_COMMENT	Force dirty page flush now
NUMERIC_MIN_VALUE	NULL
NUMERIC_MAX_VALUE	NULL
NUMERIC_BLOCK_SIZE	NULL
ENUM_VALUE_LIST	NULL
READ_ONLY	NO
COMMAND_LINE_ARGUMENT	OPTIONAL
VARIABLE_NAME	INNODB_CHANGE_BUFFERING
SESSION_VALUE	NULL
GLOBAL_VALUE	all
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GLOBAL_VALUE_ORIGIN	COMPILE-TIME
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DEFAULT_VALUE	all
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	VARCHAR
VARIABLE_COMMENT	Buffer changes to reduce random access: OFF, ON, inserting, deleting, changing, or purging.
NUMERIC_MIN_VALUE	NULL
NUMERIC_MAX_VALUE	NULL
NUMERIC_BLOCK_SIZE	NULL
ENUM_VALUE_LIST	NULL
READ_ONLY	NO
COMMAND_LINE_ARGUMENT	REQUIRED
VARIABLE_NAME	INNODB_CHANGE_BUFFERING_DEBUG
SESSION_VALUE	NULL
GLOBAL_VALUE	0
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GLOBAL_VALUE_ORIGIN	COMPILE-TIME
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DEFAULT_VALUE	0
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	INT UNSIGNED
VARIABLE_COMMENT	Debug flags for InnoDB change buffering (0=none, 2=crash at merge)
NUMERIC_MIN_VALUE	0
NUMERIC_MAX_VALUE	2
NUMERIC_BLOCK_SIZE	0
ENUM_VALUE_LIST	NULL
READ_ONLY	NO
COMMAND_LINE_ARGUMENT	REQUIRED
VARIABLE_NAME	INNODB_CHANGE_BUFFER_MAX_SIZE
SESSION_VALUE	NULL
GLOBAL_VALUE	25
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GLOBAL_VALUE_ORIGIN	COMPILE-TIME
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DEFAULT_VALUE	25
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	INT UNSIGNED
VARIABLE_COMMENT	Maximum on-disk size of change buffer in terms of percentage of the buffer pool.
NUMERIC_MIN_VALUE	0
NUMERIC_MAX_VALUE	50
NUMERIC_BLOCK_SIZE	0
ENUM_VALUE_LIST	NULL
READ_ONLY	NO
COMMAND_LINE_ARGUMENT	REQUIRED
VARIABLE_NAME	INNODB_CHECKSUMS
SESSION_VALUE	NULL
GLOBAL_VALUE	ON
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GLOBAL_VALUE_ORIGIN	COMPILE-TIME
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DEFAULT_VALUE	ON
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	BOOLEAN
VARIABLE_COMMENT	DEPRECATED. Use innodb_checksum_algorithm=NONE instead of setting this to OFF. Enable InnoDB checksums validation (enabled by default). Disable with --skip-innodb-checksums.
NUMERIC_MIN_VALUE	NULL
NUMERIC_MAX_VALUE	NULL
NUMERIC_BLOCK_SIZE	NULL
ENUM_VALUE_LIST	NULL
READ_ONLY	YES
COMMAND_LINE_ARGUMENT	NONE
VARIABLE_NAME	INNODB_CHECKSUM_ALGORITHM
SESSION_VALUE	NULL
GLOBAL_VALUE	INNODB
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GLOBAL_VALUE_ORIGIN	COMPILE-TIME
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DEFAULT_VALUE	INNODB
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	ENUM
VARIABLE_COMMENT	The algorithm InnoDB uses for page checksumming. Possible values are CRC32 (hardware accelerated if the CPU supports it) write crc32, allow any of the other checksums to match when reading; STRICT_CRC32 write crc32, do not allow other algorithms to match when reading; INNODB write a software calculated checksum, allow any other checksums to match when reading; STRICT_INNODB write a software calculated checksum, do not allow other algorithms to match when reading; NONE write a constant magic number, do not do any checksum verification when reading (same as innodb_checksums=OFF); STRICT_NONE write a constant magic number, do not allow values other than that magic number when reading; Files updated when this option is set to crc32 or strict_crc32 will not be readable by MySQL versions older than 5.6.3
NUMERIC_MIN_VALUE	NULL
NUMERIC_MAX_VALUE	NULL
NUMERIC_BLOCK_SIZE	NULL
ENUM_VALUE_LIST	CRC32,STRICT_CRC32,INNODB,STRICT_INNODB,NONE,STRICT_NONE
READ_ONLY	NO
COMMAND_LINE_ARGUMENT	REQUIRED
VARIABLE_NAME	INNODB_CMP_PER_INDEX_ENABLED
SESSION_VALUE	NULL
GLOBAL_VALUE	OFF
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GLOBAL_VALUE_ORIGIN	COMPILE-TIME
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DEFAULT_VALUE	OFF
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	BOOLEAN
VARIABLE_COMMENT	Enable INFORMATION_SCHEMA.innodb_cmp_per_index, may have negative impact on performance (off by default)
NUMERIC_MIN_VALUE	NULL
NUMERIC_MAX_VALUE	NULL
NUMERIC_BLOCK_SIZE	NULL
ENUM_VALUE_LIST	NULL
READ_ONLY	NO
COMMAND_LINE_ARGUMENT	OPTIONAL
VARIABLE_NAME	INNODB_COMMIT_CONCURRENCY
SESSION_VALUE	NULL
GLOBAL_VALUE	0
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GLOBAL_VALUE_ORIGIN	COMPILE-TIME
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DEFAULT_VALUE	0
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	BIGINT UNSIGNED
VARIABLE_COMMENT	Helps in performance tuning in heavily concurrent environments.
NUMERIC_MIN_VALUE	0
NUMERIC_MAX_VALUE	1000
NUMERIC_BLOCK_SIZE	0
ENUM_VALUE_LIST	NULL
READ_ONLY	NO
COMMAND_LINE_ARGUMENT	REQUIRED
VARIABLE_NAME	INNODB_COMPRESSION_ALGORITHM
SESSION_VALUE	NULL
GLOBAL_VALUE	none
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GLOBAL_VALUE_ORIGIN	COMPILE-TIME
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DEFAULT_VALUE	none
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	ENUM
VARIABLE_COMMENT	Compression algorithm used on page compression. One of: none, zlib, lz4, lzo, lzma, or bzip2
NUMERIC_MIN_VALUE	NULL
NUMERIC_MAX_VALUE	NULL
NUMERIC_BLOCK_SIZE	NULL
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ENUM_VALUE_LIST	none,zlib,lz4,lzo,lzma,bzip2,snappy
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READ_ONLY	NO
COMMAND_LINE_ARGUMENT	OPTIONAL
VARIABLE_NAME	INNODB_COMPRESSION_FAILURE_THRESHOLD_PCT
SESSION_VALUE	NULL
GLOBAL_VALUE	5
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GLOBAL_VALUE_ORIGIN	COMPILE-TIME
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DEFAULT_VALUE	5
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	BIGINT UNSIGNED
VARIABLE_COMMENT	If the compression failure rate of a table is greater than this number more padding is added to the pages to reduce the failures. A value of zero implies no padding
NUMERIC_MIN_VALUE	0
NUMERIC_MAX_VALUE	100
NUMERIC_BLOCK_SIZE	0
ENUM_VALUE_LIST	NULL
READ_ONLY	NO
COMMAND_LINE_ARGUMENT	OPTIONAL
VARIABLE_NAME	INNODB_COMPRESSION_LEVEL
SESSION_VALUE	NULL
GLOBAL_VALUE	6
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GLOBAL_VALUE_ORIGIN	COMPILE-TIME
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DEFAULT_VALUE	6
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	INT UNSIGNED
VARIABLE_COMMENT	Compression level used for zlib compression.  0 is no compression, 1 is fastest, 9 is best compression and default is 6.
NUMERIC_MIN_VALUE	0
NUMERIC_MAX_VALUE	9
NUMERIC_BLOCK_SIZE	0
ENUM_VALUE_LIST	NULL
READ_ONLY	NO
COMMAND_LINE_ARGUMENT	REQUIRED
VARIABLE_NAME	INNODB_COMPRESSION_PAD_PCT_MAX
SESSION_VALUE	NULL
GLOBAL_VALUE	50
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GLOBAL_VALUE_ORIGIN	COMPILE-TIME
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DEFAULT_VALUE	50
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	BIGINT UNSIGNED
VARIABLE_COMMENT	Percentage of empty space on a data page that can be reserved to make the page compressible.
NUMERIC_MIN_VALUE	0
NUMERIC_MAX_VALUE	75
NUMERIC_BLOCK_SIZE	0
ENUM_VALUE_LIST	NULL
READ_ONLY	NO
COMMAND_LINE_ARGUMENT	OPTIONAL
VARIABLE_NAME	INNODB_CONCURRENCY_TICKETS
SESSION_VALUE	NULL
GLOBAL_VALUE	5000
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GLOBAL_VALUE_ORIGIN	COMPILE-TIME
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DEFAULT_VALUE	5000
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	BIGINT UNSIGNED
VARIABLE_COMMENT	Number of times a thread is allowed to enter InnoDB within the same SQL query after it has once got the ticket
NUMERIC_MIN_VALUE	1
NUMERIC_MAX_VALUE	18446744073709551615
NUMERIC_BLOCK_SIZE	0
ENUM_VALUE_LIST	NULL
READ_ONLY	NO
COMMAND_LINE_ARGUMENT	REQUIRED
VARIABLE_NAME	INNODB_DATA_FILE_PATH
SESSION_VALUE	NULL
GLOBAL_VALUE	ibdata1:12M:autoextend
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GLOBAL_VALUE_ORIGIN	CONFIG
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DEFAULT_VALUE	
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	VARCHAR
VARIABLE_COMMENT	Path to individual files and their sizes.
NUMERIC_MIN_VALUE	NULL
NUMERIC_MAX_VALUE	NULL
NUMERIC_BLOCK_SIZE	NULL
ENUM_VALUE_LIST	NULL
READ_ONLY	YES
COMMAND_LINE_ARGUMENT	REQUIRED
VARIABLE_NAME	INNODB_DATA_HOME_DIR
SESSION_VALUE	NULL
GLOBAL_VALUE	
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GLOBAL_VALUE_ORIGIN	COMPILE-TIME
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DEFAULT_VALUE	
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	VARCHAR
VARIABLE_COMMENT	The common part for InnoDB table spaces.
NUMERIC_MIN_VALUE	NULL
NUMERIC_MAX_VALUE	NULL
NUMERIC_BLOCK_SIZE	NULL
ENUM_VALUE_LIST	NULL
READ_ONLY	YES
COMMAND_LINE_ARGUMENT	REQUIRED
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VARIABLE_NAME	INNODB_DEFAULT_PAGE_ENCRYPTION_KEY
SESSION_VALUE	NULL
GLOBAL_VALUE	1
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
DEFAULT_VALUE	1
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	INT UNSIGNED
VARIABLE_COMMENT	Encryption key used for page encryption.
NUMERIC_MIN_VALUE	1
NUMERIC_MAX_VALUE	255
NUMERIC_BLOCK_SIZE	0
ENUM_VALUE_LIST	NULL
READ_ONLY	NO
COMMAND_LINE_ARGUMENT	REQUIRED
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VARIABLE_NAME	INNODB_DEFRAGMENT
SESSION_VALUE	NULL
GLOBAL_VALUE	OFF
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GLOBAL_VALUE_ORIGIN	COMPILE-TIME
586 587 588 589 590 591 592 593 594 595 596 597 598
DEFAULT_VALUE	OFF
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	BOOLEAN
VARIABLE_COMMENT	Enable/disable InnoDB defragmentation (default FALSE). When set to FALSE, all existing defragmentation will be paused. And new defragmentation command will fail.Paused defragmentation commands will resume when this variable is set to true again.
NUMERIC_MIN_VALUE	NULL
NUMERIC_MAX_VALUE	NULL
NUMERIC_BLOCK_SIZE	NULL
ENUM_VALUE_LIST	NULL
READ_ONLY	NO
COMMAND_LINE_ARGUMENT	REQUIRED
VARIABLE_NAME	INNODB_DEFRAGMENT_FILL_FACTOR
SESSION_VALUE	NULL
GLOBAL_VALUE	0.900000
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GLOBAL_VALUE_ORIGIN	COMPILE-TIME
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DEFAULT_VALUE	0.900000
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	DOUBLE
VARIABLE_COMMENT	A number between [0.7, 1] that tells defragmentation how full it should fill a page. Default is 0.9. Number below 0.7 won't make much sense.This variable, together with innodb_defragment_fill_factor_n_recs, is introduced so defragmentation won't pack the page too full and cause page split on the next insert on every page. The variable indicating more defragmentation gain is the one effective.
NUMERIC_MIN_VALUE	0.7
NUMERIC_MAX_VALUE	1
NUMERIC_BLOCK_SIZE	NULL
ENUM_VALUE_LIST	NULL
READ_ONLY	NO
COMMAND_LINE_ARGUMENT	REQUIRED
VARIABLE_NAME	INNODB_DEFRAGMENT_FILL_FACTOR_N_RECS
SESSION_VALUE	NULL
GLOBAL_VALUE	20
613
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
614 615 616 617 618 619 620 621 622 623 624 625 626
DEFAULT_VALUE	20
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	INT UNSIGNED
VARIABLE_COMMENT	How many records of space defragmentation should leave on the page. This variable, together with innodb_defragment_fill_factor, is introduced so defragmentation won't pack the page too full and cause page split on the next insert on every page. The variable indicating more defragmentation gain is the one effective.
NUMERIC_MIN_VALUE	1
NUMERIC_MAX_VALUE	100
NUMERIC_BLOCK_SIZE	0
ENUM_VALUE_LIST	NULL
READ_ONLY	NO
COMMAND_LINE_ARGUMENT	REQUIRED
VARIABLE_NAME	INNODB_DEFRAGMENT_FREQUENCY
SESSION_VALUE	NULL
GLOBAL_VALUE	40
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GLOBAL_VALUE_ORIGIN	COMPILE-TIME
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DEFAULT_VALUE	40
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	INT UNSIGNED
VARIABLE_COMMENT	Do not defragment a single index more than this number of time per second.This controls the number of time defragmentation thread can request X_LOCK on an index. Defragmentation thread will check whether 1/defragment_frequency (s) has passed since it worked on this index last time, and put the index back to the queue if not enough time has passed. The actual frequency can only be lower than this given number.
NUMERIC_MIN_VALUE	1
NUMERIC_MAX_VALUE	1000
NUMERIC_BLOCK_SIZE	0
ENUM_VALUE_LIST	NULL
READ_ONLY	NO
COMMAND_LINE_ARGUMENT	REQUIRED
VARIABLE_NAME	INNODB_DEFRAGMENT_N_PAGES
SESSION_VALUE	NULL
GLOBAL_VALUE	7
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GLOBAL_VALUE_ORIGIN	COMPILE-TIME
642 643 644 645 646 647 648 649 650 651 652 653 654
DEFAULT_VALUE	7
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	INT UNSIGNED
VARIABLE_COMMENT	Number of pages considered at once when merging multiple pages to defragment
NUMERIC_MIN_VALUE	2
NUMERIC_MAX_VALUE	32
NUMERIC_BLOCK_SIZE	0
ENUM_VALUE_LIST	NULL
READ_ONLY	NO
COMMAND_LINE_ARGUMENT	REQUIRED
VARIABLE_NAME	INNODB_DEFRAGMENT_STATS_ACCURACY
SESSION_VALUE	NULL
GLOBAL_VALUE	0
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GLOBAL_VALUE_ORIGIN	COMPILE-TIME
656 657 658 659 660 661 662 663 664 665 666 667 668
DEFAULT_VALUE	0
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	INT UNSIGNED
VARIABLE_COMMENT	How many defragment stats changes there are before the stats are written to persistent storage. Set to 0 meaning disable defragment stats tracking.
NUMERIC_MIN_VALUE	0
NUMERIC_MAX_VALUE	4294967295
NUMERIC_BLOCK_SIZE	0
ENUM_VALUE_LIST	NULL
READ_ONLY	NO
COMMAND_LINE_ARGUMENT	REQUIRED
VARIABLE_NAME	INNODB_DISABLE_BACKGROUND_MERGE
SESSION_VALUE	NULL
GLOBAL_VALUE	OFF
669
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
670 671 672 673 674 675 676 677 678 679 680 681 682
DEFAULT_VALUE	OFF
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	BOOLEAN
VARIABLE_COMMENT	Disable change buffering merges by the master thread
NUMERIC_MIN_VALUE	NULL
NUMERIC_MAX_VALUE	NULL
NUMERIC_BLOCK_SIZE	NULL
ENUM_VALUE_LIST	NULL
READ_ONLY	NO
COMMAND_LINE_ARGUMENT	NONE
VARIABLE_NAME	INNODB_DISABLE_SORT_FILE_CACHE
SESSION_VALUE	NULL
GLOBAL_VALUE	OFF
683
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
684 685 686 687 688 689 690 691 692 693 694 695 696
DEFAULT_VALUE	OFF
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	BOOLEAN
VARIABLE_COMMENT	Whether to disable OS system file cache for sort I/O
NUMERIC_MIN_VALUE	NULL
NUMERIC_MAX_VALUE	NULL
NUMERIC_BLOCK_SIZE	NULL
ENUM_VALUE_LIST	NULL
READ_ONLY	NO
COMMAND_LINE_ARGUMENT	OPTIONAL
VARIABLE_NAME	INNODB_DOUBLEWRITE
SESSION_VALUE	NULL
GLOBAL_VALUE	ON
697
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
698 699 700 701 702 703 704 705 706 707 708 709 710
DEFAULT_VALUE	ON
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	BOOLEAN
VARIABLE_COMMENT	Enable InnoDB doublewrite buffer (enabled by default). Disable with --skip-innodb-doublewrite.
NUMERIC_MIN_VALUE	NULL
NUMERIC_MAX_VALUE	NULL
NUMERIC_BLOCK_SIZE	NULL
ENUM_VALUE_LIST	NULL
READ_ONLY	YES
COMMAND_LINE_ARGUMENT	NONE
VARIABLE_NAME	INNODB_DOUBLEWRITE_BATCH_SIZE
SESSION_VALUE	NULL
GLOBAL_VALUE	120
711
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
712 713 714 715 716 717 718 719 720 721
DEFAULT_VALUE	120
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	BIGINT UNSIGNED
VARIABLE_COMMENT	Number of pages reserved in doublewrite buffer for batch flushing
NUMERIC_MIN_VALUE	1
NUMERIC_MAX_VALUE	127
NUMERIC_BLOCK_SIZE	0
ENUM_VALUE_LIST	NULL
READ_ONLY	YES
COMMAND_LINE_ARGUMENT	OPTIONAL
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VARIABLE_NAME	INNODB_ENCRYPTION_ROTATE_KEY_AGE
SESSION_VALUE	NULL
GLOBAL_VALUE	1
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
DEFAULT_VALUE	1
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	INT UNSIGNED
VARIABLE_COMMENT	Rotate any page having a key older than this
NUMERIC_MIN_VALUE	0
NUMERIC_MAX_VALUE	4294967295
NUMERIC_BLOCK_SIZE	0
ENUM_VALUE_LIST	NULL
READ_ONLY	NO
COMMAND_LINE_ARGUMENT	REQUIRED
VARIABLE_NAME	INNODB_ENCRYPTION_ROTATION_IOPS
SESSION_VALUE	NULL
GLOBAL_VALUE	100
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
DEFAULT_VALUE	100
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	INT UNSIGNED
VARIABLE_COMMENT	Use this many iops for background key rotation
NUMERIC_MIN_VALUE	0
NUMERIC_MAX_VALUE	4294967295
NUMERIC_BLOCK_SIZE	0
ENUM_VALUE_LIST	NULL
READ_ONLY	NO
COMMAND_LINE_ARGUMENT	REQUIRED
VARIABLE_NAME	INNODB_ENCRYPTION_THREADS
SESSION_VALUE	NULL
GLOBAL_VALUE	0
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
DEFAULT_VALUE	0
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	INT UNSIGNED
VARIABLE_COMMENT	No of threads performing background key rotation and scrubbing
NUMERIC_MIN_VALUE	0
NUMERIC_MAX_VALUE	4294967295
NUMERIC_BLOCK_SIZE	0
ENUM_VALUE_LIST	NULL
READ_ONLY	NO
COMMAND_LINE_ARGUMENT	REQUIRED
VARIABLE_NAME	INNODB_ENCRYPT_LOG
SESSION_VALUE	NULL
GLOBAL_VALUE	OFF
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
DEFAULT_VALUE	OFF
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	BOOLEAN
VARIABLE_COMMENT	Enable redo log encryption/decryption.
NUMERIC_MIN_VALUE	NULL
NUMERIC_MAX_VALUE	NULL
NUMERIC_BLOCK_SIZE	NULL
ENUM_VALUE_LIST	NULL
READ_ONLY	YES
COMMAND_LINE_ARGUMENT	OPTIONAL
VARIABLE_NAME	INNODB_ENCRYPT_TABLES
SESSION_VALUE	NULL
GLOBAL_VALUE	OFF
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
DEFAULT_VALUE	OFF
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	BOOLEAN
VARIABLE_COMMENT	Encrypt all tables in the storage engine
NUMERIC_MIN_VALUE	NULL
NUMERIC_MAX_VALUE	NULL
NUMERIC_BLOCK_SIZE	NULL
ENUM_VALUE_LIST	NULL
READ_ONLY	NO
COMMAND_LINE_ARGUMENT	REQUIRED
792 793 794
VARIABLE_NAME	INNODB_FAST_SHUTDOWN
SESSION_VALUE	NULL
GLOBAL_VALUE	1
795
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
796 797 798 799 800 801 802 803 804 805
DEFAULT_VALUE	1
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	BIGINT UNSIGNED
VARIABLE_COMMENT	Speeds up the shutdown process of the InnoDB storage engine. Possible values are 0, 1 (faster) or 2 (fastest - crash-like).
NUMERIC_MIN_VALUE	0
NUMERIC_MAX_VALUE	2
NUMERIC_BLOCK_SIZE	0
ENUM_VALUE_LIST	NULL
READ_ONLY	NO
COMMAND_LINE_ARGUMENT	OPTIONAL
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VARIABLE_NAME	INNODB_FATAL_SEMAPHORE_WAIT_THRESHOLD
SESSION_VALUE	NULL
GLOBAL_VALUE	600
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
DEFAULT_VALUE	600
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	BIGINT UNSIGNED
VARIABLE_COMMENT	Maximum number of seconds that semaphore times out in InnoDB.
NUMERIC_MIN_VALUE	1
NUMERIC_MAX_VALUE	4294967295
NUMERIC_BLOCK_SIZE	0
ENUM_VALUE_LIST	NULL
READ_ONLY	YES
COMMAND_LINE_ARGUMENT	REQUIRED
820 821 822
VARIABLE_NAME	INNODB_FILE_FORMAT
SESSION_VALUE	NULL
GLOBAL_VALUE	Antelope
823
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
824 825 826 827 828 829 830 831 832 833 834 835 836
DEFAULT_VALUE	Antelope
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	VARCHAR
VARIABLE_COMMENT	File format to use for new tables in .ibd files.
NUMERIC_MIN_VALUE	NULL
NUMERIC_MAX_VALUE	NULL
NUMERIC_BLOCK_SIZE	NULL
ENUM_VALUE_LIST	NULL
READ_ONLY	NO
COMMAND_LINE_ARGUMENT	REQUIRED
VARIABLE_NAME	INNODB_FILE_FORMAT_CHECK
SESSION_VALUE	NULL
GLOBAL_VALUE	ON
837
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
838 839 840 841 842 843 844 845 846 847 848 849 850
DEFAULT_VALUE	ON
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	BOOLEAN
VARIABLE_COMMENT	Whether to perform system file format check.
NUMERIC_MIN_VALUE	NULL
NUMERIC_MAX_VALUE	NULL
NUMERIC_BLOCK_SIZE	NULL
ENUM_VALUE_LIST	NULL
READ_ONLY	YES
COMMAND_LINE_ARGUMENT	NONE
VARIABLE_NAME	INNODB_FILE_FORMAT_MAX
SESSION_VALUE	NULL
GLOBAL_VALUE	Antelope
851
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
852 853 854 855 856 857 858 859 860 861 862 863 864
DEFAULT_VALUE	Antelope
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	VARCHAR
VARIABLE_COMMENT	The highest file format in the tablespace.
NUMERIC_MIN_VALUE	NULL
NUMERIC_MAX_VALUE	NULL
NUMERIC_BLOCK_SIZE	NULL
ENUM_VALUE_LIST	NULL
READ_ONLY	NO
COMMAND_LINE_ARGUMENT	OPTIONAL
VARIABLE_NAME	INNODB_FILE_PER_TABLE
SESSION_VALUE	NULL
GLOBAL_VALUE	ON
865
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
866 867 868 869 870 871 872 873 874 875 876 877 878
DEFAULT_VALUE	ON
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	BOOLEAN
VARIABLE_COMMENT	Stores each InnoDB table to an .ibd file in the database dir.
NUMERIC_MIN_VALUE	NULL
NUMERIC_MAX_VALUE	NULL
NUMERIC_BLOCK_SIZE	NULL
ENUM_VALUE_LIST	NULL
READ_ONLY	NO
COMMAND_LINE_ARGUMENT	NONE
VARIABLE_NAME	INNODB_FIL_MAKE_PAGE_DIRTY_DEBUG
SESSION_VALUE	NULL
GLOBAL_VALUE	0
879
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
880 881 882 883 884 885 886 887 888 889 890 891 892
DEFAULT_VALUE	0
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	BIGINT UNSIGNED
VARIABLE_COMMENT	Make the first page of the given tablespace dirty.
NUMERIC_MIN_VALUE	0
NUMERIC_MAX_VALUE	4294967295
NUMERIC_BLOCK_SIZE	0
ENUM_VALUE_LIST	NULL
READ_ONLY	NO
COMMAND_LINE_ARGUMENT	OPTIONAL
VARIABLE_NAME	INNODB_FLUSHING_AVG_LOOPS
SESSION_VALUE	NULL
GLOBAL_VALUE	30
893
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
894 895 896 897 898 899 900 901 902 903 904 905 906
DEFAULT_VALUE	30
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	BIGINT UNSIGNED
VARIABLE_COMMENT	Number of iterations over which the background flushing is averaged.
NUMERIC_MIN_VALUE	1
NUMERIC_MAX_VALUE	1000
NUMERIC_BLOCK_SIZE	0
ENUM_VALUE_LIST	NULL
READ_ONLY	NO
COMMAND_LINE_ARGUMENT	REQUIRED
VARIABLE_NAME	INNODB_FLUSH_LOG_AT_TIMEOUT
SESSION_VALUE	NULL
GLOBAL_VALUE	3
907
GLOBAL_VALUE_ORIGIN	CONFIG
908 909 910 911 912 913 914 915 916 917 918 919 920
DEFAULT_VALUE	1
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	INT UNSIGNED
VARIABLE_COMMENT	Write and flush logs every (n) second.
NUMERIC_MIN_VALUE	0
NUMERIC_MAX_VALUE	2700
NUMERIC_BLOCK_SIZE	0
ENUM_VALUE_LIST	NULL
READ_ONLY	NO
COMMAND_LINE_ARGUMENT	OPTIONAL
VARIABLE_NAME	INNODB_FLUSH_LOG_AT_TRX_COMMIT
SESSION_VALUE	NULL
GLOBAL_VALUE	1
921
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
922 923 924 925 926 927 928 929 930 931 932 933 934
DEFAULT_VALUE	1
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	BIGINT UNSIGNED
VARIABLE_COMMENT	Controls the durability/speed trade-off for commits. Set to 0 (write and flush redo log to disk only once per second), 1 (flush to disk at each commit), 2 (write to log at commit but flush to disk only once per second) or 3 (flush to disk at prepare and at commit, slower and usually redundant). 1 and 3 guarantees that after a crash, committed transactions will not be lost and will be consistent with the binlog and other transactional engines. 2 can get inconsistent and lose transactions if there is a power failure or kernel crash but not if mysqld crashes. 0 has no guarantees in case of crash. 0 and 2 can be faster than 1 or 3.
NUMERIC_MIN_VALUE	0
NUMERIC_MAX_VALUE	3
NUMERIC_BLOCK_SIZE	0
ENUM_VALUE_LIST	NULL
READ_ONLY	NO
COMMAND_LINE_ARGUMENT	OPTIONAL
VARIABLE_NAME	INNODB_FLUSH_METHOD
SESSION_VALUE	NULL
GLOBAL_VALUE	
935
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
936 937 938 939 940 941 942 943 944 945 946 947 948
DEFAULT_VALUE	
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	VARCHAR
VARIABLE_COMMENT	With which method to flush data.
NUMERIC_MIN_VALUE	NULL
NUMERIC_MAX_VALUE	NULL
NUMERIC_BLOCK_SIZE	NULL
ENUM_VALUE_LIST	NULL
READ_ONLY	YES
COMMAND_LINE_ARGUMENT	REQUIRED
VARIABLE_NAME	INNODB_FLUSH_NEIGHBORS
SESSION_VALUE	NULL
GLOBAL_VALUE	1
949
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
950 951 952 953 954 955 956 957 958 959 960 961 962
DEFAULT_VALUE	1
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	BIGINT UNSIGNED
VARIABLE_COMMENT	Set to 0 (don't flush neighbors from buffer pool), 1 (flush contiguous neighbors from buffer pool) or 2 (flush neighbors from buffer pool), when flushing a block
NUMERIC_MIN_VALUE	0
NUMERIC_MAX_VALUE	2
NUMERIC_BLOCK_SIZE	0
ENUM_VALUE_LIST	NULL
READ_ONLY	NO
COMMAND_LINE_ARGUMENT	OPTIONAL
VARIABLE_NAME	INNODB_FORCE_LOAD_CORRUPTED
SESSION_VALUE	NULL
GLOBAL_VALUE	OFF
963
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
964 965 966 967 968 969 970 971 972 973 974 975 976
DEFAULT_VALUE	OFF
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	BOOLEAN
VARIABLE_COMMENT	Force InnoDB to load metadata of corrupted table.
NUMERIC_MIN_VALUE	NULL
NUMERIC_MAX_VALUE	NULL
NUMERIC_BLOCK_SIZE	NULL
ENUM_VALUE_LIST	NULL
READ_ONLY	YES
COMMAND_LINE_ARGUMENT	NONE
VARIABLE_NAME	INNODB_FORCE_PRIMARY_KEY
SESSION_VALUE	NULL
GLOBAL_VALUE	OFF
977
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
978 979 980 981 982 983 984 985 986 987 988 989 990
DEFAULT_VALUE	OFF
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	BOOLEAN
VARIABLE_COMMENT	Do not allow to create table without primary key (off by default)
NUMERIC_MIN_VALUE	NULL
NUMERIC_MAX_VALUE	NULL
NUMERIC_BLOCK_SIZE	NULL
ENUM_VALUE_LIST	NULL
READ_ONLY	NO
COMMAND_LINE_ARGUMENT	OPTIONAL
VARIABLE_NAME	INNODB_FORCE_RECOVERY
SESSION_VALUE	NULL
GLOBAL_VALUE	0
991
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
992 993 994 995 996 997 998 999 1000 1001 1002 1003 1004
DEFAULT_VALUE	0
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	BIGINT UNSIGNED
VARIABLE_COMMENT	Helps to save your data in case the disk image of the database becomes corrupt.
NUMERIC_MIN_VALUE	0
NUMERIC_MAX_VALUE	6
NUMERIC_BLOCK_SIZE	0
ENUM_VALUE_LIST	NULL
READ_ONLY	YES
COMMAND_LINE_ARGUMENT	REQUIRED
VARIABLE_NAME	INNODB_FORCE_RECOVERY_CRASH
SESSION_VALUE	NULL
GLOBAL_VALUE	0
1005
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
1006 1007 1008 1009 1010 1011 1012 1013 1014 1015 1016 1017 1018
DEFAULT_VALUE	0
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	BIGINT UNSIGNED
VARIABLE_COMMENT	Kills the server during crash recovery.
NUMERIC_MIN_VALUE	0
NUMERIC_MAX_VALUE	10
NUMERIC_BLOCK_SIZE	0
ENUM_VALUE_LIST	NULL
READ_ONLY	YES
COMMAND_LINE_ARGUMENT	REQUIRED
VARIABLE_NAME	INNODB_FT_AUX_TABLE
SESSION_VALUE	NULL
GLOBAL_VALUE	
1019
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
1020 1021 1022 1023 1024 1025 1026 1027 1028 1029 1030 1031 1032
DEFAULT_VALUE	
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	VARCHAR
VARIABLE_COMMENT	FTS internal auxiliary table to be checked
NUMERIC_MIN_VALUE	NULL
NUMERIC_MAX_VALUE	NULL
NUMERIC_BLOCK_SIZE	NULL
ENUM_VALUE_LIST	NULL
READ_ONLY	NO
COMMAND_LINE_ARGUMENT	NONE
VARIABLE_NAME	INNODB_FT_CACHE_SIZE
SESSION_VALUE	NULL
GLOBAL_VALUE	8000000
1033
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
1034 1035 1036 1037 1038 1039 1040 1041 1042 1043 1044 1045 1046
DEFAULT_VALUE	8000000
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	BIGINT UNSIGNED
VARIABLE_COMMENT	InnoDB Fulltext search cache size in bytes
NUMERIC_MIN_VALUE	1600000
NUMERIC_MAX_VALUE	80000000
NUMERIC_BLOCK_SIZE	0
ENUM_VALUE_LIST	NULL
READ_ONLY	YES
COMMAND_LINE_ARGUMENT	REQUIRED
VARIABLE_NAME	INNODB_FT_ENABLE_DIAG_PRINT
SESSION_VALUE	NULL
GLOBAL_VALUE	OFF
1047
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
1048 1049 1050 1051 1052 1053 1054 1055 1056 1057 1058 1059 1060
DEFAULT_VALUE	OFF
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	BOOLEAN
VARIABLE_COMMENT	Whether to enable additional FTS diagnostic printout 
NUMERIC_MIN_VALUE	NULL
NUMERIC_MAX_VALUE	NULL
NUMERIC_BLOCK_SIZE	NULL
ENUM_VALUE_LIST	NULL
READ_ONLY	NO
COMMAND_LINE_ARGUMENT	OPTIONAL
VARIABLE_NAME	INNODB_FT_ENABLE_STOPWORD
SESSION_VALUE	ON
GLOBAL_VALUE	ON
1061
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
1062 1063 1064 1065 1066 1067 1068 1069 1070 1071 1072 1073 1074
DEFAULT_VALUE	ON
VARIABLE_SCOPE	SESSION
VARIABLE_TYPE	BOOLEAN
VARIABLE_COMMENT	Create FTS index with stopword.
NUMERIC_MIN_VALUE	NULL
NUMERIC_MAX_VALUE	NULL
NUMERIC_BLOCK_SIZE	NULL
ENUM_VALUE_LIST	NULL
READ_ONLY	NO
COMMAND_LINE_ARGUMENT	OPTIONAL
VARIABLE_NAME	INNODB_FT_MAX_TOKEN_SIZE
SESSION_VALUE	NULL
GLOBAL_VALUE	84
1075
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
1076 1077 1078 1079 1080 1081 1082 1083 1084 1085 1086 1087 1088
DEFAULT_VALUE	84
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	BIGINT UNSIGNED
VARIABLE_COMMENT	InnoDB Fulltext search maximum token size in characters
NUMERIC_MIN_VALUE	10
NUMERIC_MAX_VALUE	84
NUMERIC_BLOCK_SIZE	0
ENUM_VALUE_LIST	NULL
READ_ONLY	YES
COMMAND_LINE_ARGUMENT	REQUIRED
VARIABLE_NAME	INNODB_FT_MIN_TOKEN_SIZE
SESSION_VALUE	NULL
GLOBAL_VALUE	3
1089
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
1090 1091 1092 1093 1094 1095 1096 1097 1098 1099 1100 1101 1102
DEFAULT_VALUE	3
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	BIGINT UNSIGNED
VARIABLE_COMMENT	InnoDB Fulltext search minimum token size in characters
NUMERIC_MIN_VALUE	0
NUMERIC_MAX_VALUE	16
NUMERIC_BLOCK_SIZE	0
ENUM_VALUE_LIST	NULL
READ_ONLY	YES
COMMAND_LINE_ARGUMENT	REQUIRED
VARIABLE_NAME	INNODB_FT_NUM_WORD_OPTIMIZE
SESSION_VALUE	NULL
GLOBAL_VALUE	2000
1103
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
1104 1105 1106 1107 1108 1109 1110 1111 1112 1113 1114 1115 1116
DEFAULT_VALUE	2000
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	BIGINT UNSIGNED
VARIABLE_COMMENT	InnoDB Fulltext search number of words to optimize for each optimize table call 
NUMERIC_MIN_VALUE	1000
NUMERIC_MAX_VALUE	10000
NUMERIC_BLOCK_SIZE	0
ENUM_VALUE_LIST	NULL
READ_ONLY	NO
COMMAND_LINE_ARGUMENT	OPTIONAL
VARIABLE_NAME	INNODB_FT_RESULT_CACHE_LIMIT
SESSION_VALUE	NULL
GLOBAL_VALUE	2000000000
1117
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
1118 1119 1120 1121 1122 1123 1124 1125 1126 1127 1128 1129 1130
DEFAULT_VALUE	2000000000
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	BIGINT UNSIGNED
VARIABLE_COMMENT	InnoDB Fulltext search query result cache limit in bytes
NUMERIC_MIN_VALUE	1000000
NUMERIC_MAX_VALUE	4294967295
NUMERIC_BLOCK_SIZE	0
ENUM_VALUE_LIST	NULL
READ_ONLY	NO
COMMAND_LINE_ARGUMENT	REQUIRED
VARIABLE_NAME	INNODB_FT_SERVER_STOPWORD_TABLE
SESSION_VALUE	NULL
GLOBAL_VALUE	
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GLOBAL_VALUE_ORIGIN	COMPILE-TIME
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DEFAULT_VALUE	
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	VARCHAR
VARIABLE_COMMENT	The user supplied stopword table name.
NUMERIC_MIN_VALUE	NULL
NUMERIC_MAX_VALUE	NULL
NUMERIC_BLOCK_SIZE	NULL
ENUM_VALUE_LIST	NULL
READ_ONLY	NO
COMMAND_LINE_ARGUMENT	OPTIONAL
VARIABLE_NAME	INNODB_FT_SORT_PLL_DEGREE
SESSION_VALUE	NULL
GLOBAL_VALUE	2
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GLOBAL_VALUE_ORIGIN	COMPILE-TIME
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DEFAULT_VALUE	2
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	BIGINT UNSIGNED
VARIABLE_COMMENT	InnoDB Fulltext search parallel sort degree, will round up to nearest power of 2 number
NUMERIC_MIN_VALUE	1
NUMERIC_MAX_VALUE	16
NUMERIC_BLOCK_SIZE	0
ENUM_VALUE_LIST	NULL
READ_ONLY	YES
COMMAND_LINE_ARGUMENT	REQUIRED
VARIABLE_NAME	INNODB_FT_TOTAL_CACHE_SIZE
SESSION_VALUE	NULL
GLOBAL_VALUE	640000000
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GLOBAL_VALUE_ORIGIN	COMPILE-TIME
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DEFAULT_VALUE	640000000
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	BIGINT UNSIGNED
VARIABLE_COMMENT	Total memory allocated for InnoDB Fulltext Search cache
NUMERIC_MIN_VALUE	32000000
NUMERIC_MAX_VALUE	1600000000
NUMERIC_BLOCK_SIZE	0
ENUM_VALUE_LIST	NULL
READ_ONLY	YES
COMMAND_LINE_ARGUMENT	REQUIRED
VARIABLE_NAME	INNODB_FT_USER_STOPWORD_TABLE
SESSION_VALUE	
GLOBAL_VALUE	
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GLOBAL_VALUE_ORIGIN	COMPILE-TIME
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DEFAULT_VALUE	
VARIABLE_SCOPE	SESSION
VARIABLE_TYPE	VARCHAR
VARIABLE_COMMENT	User supplied stopword table name, effective in the session level.
NUMERIC_MIN_VALUE	NULL
NUMERIC_MAX_VALUE	NULL
NUMERIC_BLOCK_SIZE	NULL
ENUM_VALUE_LIST	NULL
READ_ONLY	NO
COMMAND_LINE_ARGUMENT	OPTIONAL
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VARIABLE_NAME	INNODB_IDLE_FLUSH_PCT
SESSION_VALUE	NULL
GLOBAL_VALUE	100
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
DEFAULT_VALUE	100
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	BIGINT UNSIGNED
VARIABLE_COMMENT	Up to what percentage of dirty pages should be flushed when innodb finds it has spare resources to do so.
NUMERIC_MIN_VALUE	0
NUMERIC_MAX_VALUE	100
NUMERIC_BLOCK_SIZE	0
ENUM_VALUE_LIST	NULL
READ_ONLY	NO
COMMAND_LINE_ARGUMENT	REQUIRED
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VARIABLE_NAME	INNODB_IMMEDIATE_SCRUB_DATA_UNCOMPRESSED
SESSION_VALUE	NULL
GLOBAL_VALUE	OFF
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
DEFAULT_VALUE	OFF
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	BOOLEAN
VARIABLE_COMMENT	Enable scrubbing of data
NUMERIC_MIN_VALUE	NULL
NUMERIC_MAX_VALUE	NULL
NUMERIC_BLOCK_SIZE	NULL
ENUM_VALUE_LIST	NULL
READ_ONLY	NO
COMMAND_LINE_ARGUMENT	REQUIRED
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VARIABLE_NAME	INNODB_INSTRUMENT_SEMAPHORES
SESSION_VALUE	NULL
GLOBAL_VALUE	OFF
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
DEFAULT_VALUE	OFF
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	BOOLEAN
VARIABLE_COMMENT	Enable semaphore request instrumentation. This could have some effect on performance but allows better information on long semaphore wait problems. (Default: not enabled)
NUMERIC_MIN_VALUE	NULL
NUMERIC_MAX_VALUE	NULL
NUMERIC_BLOCK_SIZE	NULL
ENUM_VALUE_LIST	NULL
READ_ONLY	NO
COMMAND_LINE_ARGUMENT	OPTIONAL
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VARIABLE_NAME	INNODB_IO_CAPACITY
SESSION_VALUE	NULL
GLOBAL_VALUE	200
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GLOBAL_VALUE_ORIGIN	COMPILE-TIME
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DEFAULT_VALUE	200
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	BIGINT UNSIGNED
VARIABLE_COMMENT	Number of IOPs the server can do. Tunes the background IO rate
NUMERIC_MIN_VALUE	100
NUMERIC_MAX_VALUE	18446744073709551615
NUMERIC_BLOCK_SIZE	0
ENUM_VALUE_LIST	NULL
READ_ONLY	NO
COMMAND_LINE_ARGUMENT	REQUIRED
VARIABLE_NAME	INNODB_IO_CAPACITY_MAX
SESSION_VALUE	NULL
GLOBAL_VALUE	2000
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GLOBAL_VALUE_ORIGIN	COMPILE-TIME
1244 1245 1246 1247 1248 1249 1250 1251 1252 1253 1254 1255 1256
DEFAULT_VALUE	18446744073709551615
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	BIGINT UNSIGNED
VARIABLE_COMMENT	Limit to which innodb_io_capacity can be inflated.
NUMERIC_MIN_VALUE	100
NUMERIC_MAX_VALUE	18446744073709551615
NUMERIC_BLOCK_SIZE	0
ENUM_VALUE_LIST	NULL
READ_ONLY	NO
COMMAND_LINE_ARGUMENT	REQUIRED
VARIABLE_NAME	INNODB_LARGE_PREFIX
SESSION_VALUE	NULL
GLOBAL_VALUE	OFF
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GLOBAL_VALUE_ORIGIN	COMPILE-TIME
1258 1259 1260 1261 1262 1263 1264 1265 1266 1267 1268 1269 1270
DEFAULT_VALUE	OFF
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	BOOLEAN
VARIABLE_COMMENT	Support large index prefix length of REC_VERSION_56_MAX_INDEX_COL_LEN (3072) bytes.
NUMERIC_MIN_VALUE	NULL
NUMERIC_MAX_VALUE	NULL
NUMERIC_BLOCK_SIZE	NULL
ENUM_VALUE_LIST	NULL
READ_ONLY	NO
COMMAND_LINE_ARGUMENT	NONE
VARIABLE_NAME	INNODB_LIMIT_OPTIMISTIC_INSERT_DEBUG
SESSION_VALUE	NULL
GLOBAL_VALUE	0
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GLOBAL_VALUE_ORIGIN	COMPILE-TIME
1272 1273 1274 1275 1276 1277 1278 1279 1280 1281 1282 1283 1284
DEFAULT_VALUE	0
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	INT UNSIGNED
VARIABLE_COMMENT	Artificially limit the number of records per B-tree page (0=unlimited).
NUMERIC_MIN_VALUE	0
NUMERIC_MAX_VALUE	4294967295
NUMERIC_BLOCK_SIZE	0
ENUM_VALUE_LIST	NULL
READ_ONLY	NO
COMMAND_LINE_ARGUMENT	REQUIRED
VARIABLE_NAME	INNODB_LOCKS_UNSAFE_FOR_BINLOG
SESSION_VALUE	NULL
GLOBAL_VALUE	OFF
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GLOBAL_VALUE_ORIGIN	COMPILE-TIME
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DEFAULT_VALUE	OFF
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	BOOLEAN
VARIABLE_COMMENT	DEPRECATED. This option may be removed in future releases. Please use READ COMMITTED transaction isolation level instead. Force InnoDB to not use next-key locking, to use only row-level locking.
NUMERIC_MIN_VALUE	NULL
NUMERIC_MAX_VALUE	NULL
NUMERIC_BLOCK_SIZE	NULL
ENUM_VALUE_LIST	NULL
READ_ONLY	YES
COMMAND_LINE_ARGUMENT	NONE
VARIABLE_NAME	INNODB_LOCK_WAIT_TIMEOUT
SESSION_VALUE	50
GLOBAL_VALUE	50
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GLOBAL_VALUE_ORIGIN	COMPILE-TIME
1300 1301 1302 1303 1304 1305 1306 1307 1308 1309 1310 1311 1312
DEFAULT_VALUE	50
VARIABLE_SCOPE	SESSION
VARIABLE_TYPE	BIGINT UNSIGNED
VARIABLE_COMMENT	Timeout in seconds an InnoDB transaction may wait for a lock before being rolled back. Values above 100000000 disable the timeout.
NUMERIC_MIN_VALUE	1
NUMERIC_MAX_VALUE	1073741824
NUMERIC_BLOCK_SIZE	0
ENUM_VALUE_LIST	NULL
READ_ONLY	NO
COMMAND_LINE_ARGUMENT	REQUIRED
VARIABLE_NAME	INNODB_LOG_BUFFER_SIZE
SESSION_VALUE	NULL
GLOBAL_VALUE	1048576
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GLOBAL_VALUE_ORIGIN	CONFIG
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DEFAULT_VALUE	8388608
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	BIGINT
VARIABLE_COMMENT	The size of the buffer which InnoDB uses to write log to the log files on disk.
NUMERIC_MIN_VALUE	262144
NUMERIC_MAX_VALUE	9223372036854775807
NUMERIC_BLOCK_SIZE	1024
ENUM_VALUE_LIST	NULL
READ_ONLY	YES
COMMAND_LINE_ARGUMENT	REQUIRED
VARIABLE_NAME	INNODB_LOG_CHECKPOINT_NOW
SESSION_VALUE	NULL
GLOBAL_VALUE	OFF
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GLOBAL_VALUE_ORIGIN	COMPILE-TIME
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DEFAULT_VALUE	OFF
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	BOOLEAN
VARIABLE_COMMENT	Force checkpoint now
NUMERIC_MIN_VALUE	NULL
NUMERIC_MAX_VALUE	NULL
NUMERIC_BLOCK_SIZE	NULL
ENUM_VALUE_LIST	NULL
READ_ONLY	NO
COMMAND_LINE_ARGUMENT	OPTIONAL
VARIABLE_NAME	INNODB_LOG_COMPRESSED_PAGES
SESSION_VALUE	NULL
1340
GLOBAL_VALUE	OFF
1341
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
1342
DEFAULT_VALUE	OFF
1343 1344 1345 1346 1347 1348 1349 1350 1351 1352 1353 1354
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	BOOLEAN
VARIABLE_COMMENT	Enables/disables the logging of entire compressed page images. InnoDB logs the compressed pages to prevent corruption if the zlib compression algorithm changes. When turned OFF, InnoDB will assume that the zlib compression algorithm doesn't change.
NUMERIC_MIN_VALUE	NULL
NUMERIC_MAX_VALUE	NULL
NUMERIC_BLOCK_SIZE	NULL
ENUM_VALUE_LIST	NULL
READ_ONLY	NO
COMMAND_LINE_ARGUMENT	OPTIONAL
VARIABLE_NAME	INNODB_LOG_FILES_IN_GROUP
SESSION_VALUE	NULL
GLOBAL_VALUE	2
1355
GLOBAL_VALUE_ORIGIN	CONFIG
1356 1357 1358 1359 1360 1361 1362 1363 1364 1365 1366 1367 1368
DEFAULT_VALUE	2
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	BIGINT UNSIGNED
VARIABLE_COMMENT	Number of log files in the log group. InnoDB writes to the files in a circular fashion.
NUMERIC_MIN_VALUE	2
NUMERIC_MAX_VALUE	100
NUMERIC_BLOCK_SIZE	0
ENUM_VALUE_LIST	NULL
READ_ONLY	YES
COMMAND_LINE_ARGUMENT	REQUIRED
VARIABLE_NAME	INNODB_LOG_FILE_SIZE
SESSION_VALUE	NULL
GLOBAL_VALUE	5242880
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GLOBAL_VALUE_ORIGIN	CONFIG
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DEFAULT_VALUE	50331648
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	BIGINT
VARIABLE_COMMENT	Size of each log file in a log group.
NUMERIC_MIN_VALUE	1048576
NUMERIC_MAX_VALUE	9223372036854775807
NUMERIC_BLOCK_SIZE	1048576
ENUM_VALUE_LIST	NULL
READ_ONLY	YES
COMMAND_LINE_ARGUMENT	REQUIRED
VARIABLE_NAME	INNODB_LOG_GROUP_HOME_DIR
SESSION_VALUE	NULL
GLOBAL_VALUE	PATH
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GLOBAL_VALUE_ORIGIN	COMPILE-TIME
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DEFAULT_VALUE	
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	VARCHAR
VARIABLE_COMMENT	Path to InnoDB log files.
NUMERIC_MIN_VALUE	NULL
NUMERIC_MAX_VALUE	NULL
NUMERIC_BLOCK_SIZE	NULL
ENUM_VALUE_LIST	NULL
READ_ONLY	YES
COMMAND_LINE_ARGUMENT	REQUIRED
VARIABLE_NAME	INNODB_LRU_SCAN_DEPTH
SESSION_VALUE	NULL
GLOBAL_VALUE	100
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GLOBAL_VALUE_ORIGIN	CONFIG
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DEFAULT_VALUE	1024
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	BIGINT UNSIGNED
VARIABLE_COMMENT	How deep to scan LRU to keep it clean
NUMERIC_MIN_VALUE	100
NUMERIC_MAX_VALUE	18446744073709551615
NUMERIC_BLOCK_SIZE	0
ENUM_VALUE_LIST	NULL
READ_ONLY	NO
COMMAND_LINE_ARGUMENT	REQUIRED
VARIABLE_NAME	INNODB_MAX_DIRTY_PAGES_PCT
SESSION_VALUE	NULL
1410
GLOBAL_VALUE	75.000000
1411
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
1412
DEFAULT_VALUE	75.000000
1413
VARIABLE_SCOPE	GLOBAL
1414
VARIABLE_TYPE	DOUBLE
1415
VARIABLE_COMMENT	Percentage of dirty pages allowed in bufferpool.
1416 1417 1418
NUMERIC_MIN_VALUE	0.001
NUMERIC_MAX_VALUE	99.999
NUMERIC_BLOCK_SIZE	NULL
1419 1420 1421 1422 1423
ENUM_VALUE_LIST	NULL
READ_ONLY	NO
COMMAND_LINE_ARGUMENT	REQUIRED
VARIABLE_NAME	INNODB_MAX_DIRTY_PAGES_PCT_LWM
SESSION_VALUE	NULL
1424
GLOBAL_VALUE	0.001000
1425
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
1426
DEFAULT_VALUE	0.001000
1427
VARIABLE_SCOPE	GLOBAL
1428
VARIABLE_TYPE	DOUBLE
1429 1430
VARIABLE_COMMENT	Percentage of dirty pages at which flushing kicks in.
NUMERIC_MIN_VALUE	0
1431 1432
NUMERIC_MAX_VALUE	99.999
NUMERIC_BLOCK_SIZE	NULL
1433 1434 1435 1436 1437 1438
ENUM_VALUE_LIST	NULL
READ_ONLY	NO
COMMAND_LINE_ARGUMENT	REQUIRED
VARIABLE_NAME	INNODB_MAX_PURGE_LAG
SESSION_VALUE	NULL
GLOBAL_VALUE	0
1439
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
1440 1441 1442 1443 1444 1445 1446 1447 1448 1449 1450 1451 1452
DEFAULT_VALUE	0
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	BIGINT UNSIGNED
VARIABLE_COMMENT	Desired maximum length of the purge queue (0 = no limit)
NUMERIC_MIN_VALUE	0
NUMERIC_MAX_VALUE	18446744073709551615
NUMERIC_BLOCK_SIZE	0
ENUM_VALUE_LIST	NULL
READ_ONLY	NO
COMMAND_LINE_ARGUMENT	REQUIRED
VARIABLE_NAME	INNODB_MAX_PURGE_LAG_DELAY
SESSION_VALUE	NULL
GLOBAL_VALUE	0
1453
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
1454 1455 1456 1457 1458 1459 1460 1461 1462 1463 1464 1465 1466
DEFAULT_VALUE	0
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	BIGINT UNSIGNED
VARIABLE_COMMENT	Maximum delay of user threads in micro-seconds
NUMERIC_MIN_VALUE	0
NUMERIC_MAX_VALUE	10000000
NUMERIC_BLOCK_SIZE	0
ENUM_VALUE_LIST	NULL
READ_ONLY	NO
COMMAND_LINE_ARGUMENT	REQUIRED
VARIABLE_NAME	INNODB_MIRRORED_LOG_GROUPS
SESSION_VALUE	NULL
GLOBAL_VALUE	1
1467
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
1468 1469 1470 1471 1472 1473 1474 1475 1476 1477 1478 1479 1480
DEFAULT_VALUE	0
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	BIGINT
VARIABLE_COMMENT	Number of identical copies of log groups we keep for the database. Currently this should be set to 1.
NUMERIC_MIN_VALUE	0
NUMERIC_MAX_VALUE	10
NUMERIC_BLOCK_SIZE	0
ENUM_VALUE_LIST	NULL
READ_ONLY	YES
COMMAND_LINE_ARGUMENT	REQUIRED
VARIABLE_NAME	INNODB_MONITOR_DISABLE
SESSION_VALUE	NULL
GLOBAL_VALUE	
1481
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
1482 1483 1484 1485 1486 1487 1488 1489 1490 1491 1492 1493 1494
DEFAULT_VALUE	
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	VARCHAR
VARIABLE_COMMENT	Turn off a monitor counter
NUMERIC_MIN_VALUE	NULL
NUMERIC_MAX_VALUE	NULL
NUMERIC_BLOCK_SIZE	NULL
ENUM_VALUE_LIST	NULL
READ_ONLY	NO
COMMAND_LINE_ARGUMENT	REQUIRED
VARIABLE_NAME	INNODB_MONITOR_ENABLE
SESSION_VALUE	NULL
GLOBAL_VALUE	
1495
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
1496 1497 1498 1499 1500 1501 1502 1503 1504 1505 1506 1507 1508
DEFAULT_VALUE	
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	VARCHAR
VARIABLE_COMMENT	Turn on a monitor counter
NUMERIC_MIN_VALUE	NULL
NUMERIC_MAX_VALUE	NULL
NUMERIC_BLOCK_SIZE	NULL
ENUM_VALUE_LIST	NULL
READ_ONLY	NO
COMMAND_LINE_ARGUMENT	REQUIRED
VARIABLE_NAME	INNODB_MONITOR_RESET
SESSION_VALUE	NULL
GLOBAL_VALUE	
1509
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
1510 1511 1512 1513 1514 1515 1516 1517 1518 1519 1520 1521 1522
DEFAULT_VALUE	
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	VARCHAR
VARIABLE_COMMENT	Reset a monitor counter
NUMERIC_MIN_VALUE	NULL
NUMERIC_MAX_VALUE	NULL
NUMERIC_BLOCK_SIZE	NULL
ENUM_VALUE_LIST	NULL
READ_ONLY	NO
COMMAND_LINE_ARGUMENT	REQUIRED
VARIABLE_NAME	INNODB_MONITOR_RESET_ALL
SESSION_VALUE	NULL
GLOBAL_VALUE	
1523
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
1524 1525 1526 1527 1528 1529 1530 1531 1532 1533 1534 1535 1536
DEFAULT_VALUE	
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	VARCHAR
VARIABLE_COMMENT	Reset all values for a monitor counter
NUMERIC_MIN_VALUE	NULL
NUMERIC_MAX_VALUE	NULL
NUMERIC_BLOCK_SIZE	NULL
ENUM_VALUE_LIST	NULL
READ_ONLY	NO
COMMAND_LINE_ARGUMENT	REQUIRED
VARIABLE_NAME	INNODB_MTFLUSH_THREADS
SESSION_VALUE	NULL
GLOBAL_VALUE	8
1537
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
1538 1539 1540 1541 1542 1543 1544 1545 1546 1547 1548 1549 1550
DEFAULT_VALUE	8
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	BIGINT
VARIABLE_COMMENT	Number of multi-threaded flush threads
NUMERIC_MIN_VALUE	1
NUMERIC_MAX_VALUE	64
NUMERIC_BLOCK_SIZE	0
ENUM_VALUE_LIST	NULL
READ_ONLY	YES
COMMAND_LINE_ARGUMENT	REQUIRED
VARIABLE_NAME	INNODB_OLD_BLOCKS_PCT
SESSION_VALUE	NULL
GLOBAL_VALUE	37
1551
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
1552 1553 1554 1555 1556 1557 1558 1559 1560 1561 1562 1563 1564
DEFAULT_VALUE	37
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	INT UNSIGNED
VARIABLE_COMMENT	Percentage of the buffer pool to reserve for 'old' blocks.
NUMERIC_MIN_VALUE	5
NUMERIC_MAX_VALUE	95
NUMERIC_BLOCK_SIZE	0
ENUM_VALUE_LIST	NULL
READ_ONLY	NO
COMMAND_LINE_ARGUMENT	REQUIRED
VARIABLE_NAME	INNODB_OLD_BLOCKS_TIME
SESSION_VALUE	NULL
GLOBAL_VALUE	1000
1565
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
1566 1567 1568 1569 1570 1571 1572 1573 1574 1575 1576 1577 1578
DEFAULT_VALUE	1000
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	INT UNSIGNED
VARIABLE_COMMENT	Move blocks to the 'new' end of the buffer pool if the first access was at least this many milliseconds ago. The timeout is disabled if 0.
NUMERIC_MIN_VALUE	0
NUMERIC_MAX_VALUE	4294967295
NUMERIC_BLOCK_SIZE	0
ENUM_VALUE_LIST	NULL
READ_ONLY	NO
COMMAND_LINE_ARGUMENT	REQUIRED
VARIABLE_NAME	INNODB_ONLINE_ALTER_LOG_MAX_SIZE
SESSION_VALUE	NULL
GLOBAL_VALUE	134217728
1579
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
1580 1581 1582 1583 1584 1585 1586 1587 1588 1589 1590 1591 1592
DEFAULT_VALUE	134217728
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	BIGINT UNSIGNED
VARIABLE_COMMENT	Maximum modification log file size for online index creation
NUMERIC_MIN_VALUE	65536
NUMERIC_MAX_VALUE	18446744073709551615
NUMERIC_BLOCK_SIZE	0
ENUM_VALUE_LIST	NULL
READ_ONLY	NO
COMMAND_LINE_ARGUMENT	REQUIRED
VARIABLE_NAME	INNODB_OPEN_FILES
SESSION_VALUE	NULL
GLOBAL_VALUE	400
1593
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
1594 1595 1596 1597 1598 1599 1600 1601 1602 1603 1604 1605 1606
DEFAULT_VALUE	0
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	BIGINT
VARIABLE_COMMENT	How many files at the maximum InnoDB keeps open at the same time.
NUMERIC_MIN_VALUE	0
NUMERIC_MAX_VALUE	9223372036854775807
NUMERIC_BLOCK_SIZE	0
ENUM_VALUE_LIST	NULL
READ_ONLY	YES
COMMAND_LINE_ARGUMENT	REQUIRED
VARIABLE_NAME	INNODB_OPTIMIZE_FULLTEXT_ONLY
SESSION_VALUE	NULL
GLOBAL_VALUE	OFF
1607
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
1608 1609 1610 1611 1612 1613 1614 1615 1616 1617 1618 1619 1620
DEFAULT_VALUE	OFF
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	BOOLEAN
VARIABLE_COMMENT	Only optimize the Fulltext index of the table
NUMERIC_MIN_VALUE	NULL
NUMERIC_MAX_VALUE	NULL
NUMERIC_BLOCK_SIZE	NULL
ENUM_VALUE_LIST	NULL
READ_ONLY	NO
COMMAND_LINE_ARGUMENT	NONE
VARIABLE_NAME	INNODB_PAGE_HASH_LOCKS
SESSION_VALUE	NULL
GLOBAL_VALUE	16
1621
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
1622 1623 1624 1625 1626 1627 1628 1629 1630 1631 1632 1633 1634
DEFAULT_VALUE	16
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	BIGINT UNSIGNED
VARIABLE_COMMENT	Number of rw_locks protecting buffer pool page_hash. Rounded up to the next power of 2
NUMERIC_MIN_VALUE	1
NUMERIC_MAX_VALUE	1024
NUMERIC_BLOCK_SIZE	0
ENUM_VALUE_LIST	NULL
READ_ONLY	YES
COMMAND_LINE_ARGUMENT	OPTIONAL
VARIABLE_NAME	INNODB_PAGE_SIZE
SESSION_VALUE	NULL
GLOBAL_VALUE	16384
1635
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
1636 1637 1638 1639 1640 1641 1642 1643 1644 1645
DEFAULT_VALUE	16384
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	BIGINT UNSIGNED
VARIABLE_COMMENT	Page size to use for all InnoDB tablespaces.
NUMERIC_MIN_VALUE	4096
NUMERIC_MAX_VALUE	65536
NUMERIC_BLOCK_SIZE	0
ENUM_VALUE_LIST	NULL
READ_ONLY	YES
COMMAND_LINE_ARGUMENT	OPTIONAL
1646 1647 1648 1649 1650 1651 1652 1653 1654 1655 1656 1657 1658 1659
VARIABLE_NAME	INNODB_PREFIX_INDEX_CLUSTER_OPTIMIZATION
SESSION_VALUE	NULL
GLOBAL_VALUE	OFF
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
DEFAULT_VALUE	OFF
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	BOOLEAN
VARIABLE_COMMENT	Enable prefix optimization to sometimes avoid cluster index lookups.
NUMERIC_MIN_VALUE	NULL
NUMERIC_MAX_VALUE	NULL
NUMERIC_BLOCK_SIZE	NULL
ENUM_VALUE_LIST	NULL
READ_ONLY	NO
COMMAND_LINE_ARGUMENT	OPTIONAL
1660 1661 1662
VARIABLE_NAME	INNODB_PRINT_ALL_DEADLOCKS
SESSION_VALUE	NULL
GLOBAL_VALUE	OFF
1663
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
1664 1665 1666 1667 1668 1669 1670 1671 1672 1673 1674 1675 1676
DEFAULT_VALUE	OFF
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	BOOLEAN
VARIABLE_COMMENT	Print all deadlocks to MySQL error log (off by default)
NUMERIC_MIN_VALUE	NULL
NUMERIC_MAX_VALUE	NULL
NUMERIC_BLOCK_SIZE	NULL
ENUM_VALUE_LIST	NULL
READ_ONLY	NO
COMMAND_LINE_ARGUMENT	OPTIONAL
VARIABLE_NAME	INNODB_PURGE_BATCH_SIZE
SESSION_VALUE	NULL
GLOBAL_VALUE	300
1677
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
1678 1679 1680 1681 1682 1683 1684 1685 1686 1687 1688 1689 1690
DEFAULT_VALUE	300
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	BIGINT UNSIGNED
VARIABLE_COMMENT	Number of UNDO log pages to purge in one batch from the history list.
NUMERIC_MIN_VALUE	1
NUMERIC_MAX_VALUE	5000
NUMERIC_BLOCK_SIZE	0
ENUM_VALUE_LIST	NULL
READ_ONLY	NO
COMMAND_LINE_ARGUMENT	OPTIONAL
VARIABLE_NAME	INNODB_PURGE_RUN_NOW
SESSION_VALUE	NULL
GLOBAL_VALUE	OFF
1691
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
1692 1693 1694 1695 1696 1697 1698 1699 1700 1701 1702 1703 1704
DEFAULT_VALUE	OFF
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	BOOLEAN
VARIABLE_COMMENT	Set purge state to RUN
NUMERIC_MIN_VALUE	NULL
NUMERIC_MAX_VALUE	NULL
NUMERIC_BLOCK_SIZE	NULL
ENUM_VALUE_LIST	NULL
READ_ONLY	NO
COMMAND_LINE_ARGUMENT	OPTIONAL
VARIABLE_NAME	INNODB_PURGE_STOP_NOW
SESSION_VALUE	NULL
GLOBAL_VALUE	OFF
1705
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
1706 1707 1708 1709 1710 1711 1712 1713 1714 1715 1716 1717 1718
DEFAULT_VALUE	OFF
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	BOOLEAN
VARIABLE_COMMENT	Set purge state to STOP
NUMERIC_MIN_VALUE	NULL
NUMERIC_MAX_VALUE	NULL
NUMERIC_BLOCK_SIZE	NULL
ENUM_VALUE_LIST	NULL
READ_ONLY	NO
COMMAND_LINE_ARGUMENT	OPTIONAL
VARIABLE_NAME	INNODB_PURGE_THREADS
SESSION_VALUE	NULL
GLOBAL_VALUE	1
1719
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
1720 1721 1722 1723 1724 1725 1726 1727 1728 1729 1730 1731 1732
DEFAULT_VALUE	1
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	BIGINT UNSIGNED
VARIABLE_COMMENT	Purge threads can be from 1 to 32. Default is 1.
NUMERIC_MIN_VALUE	1
NUMERIC_MAX_VALUE	32
NUMERIC_BLOCK_SIZE	0
ENUM_VALUE_LIST	NULL
READ_ONLY	YES
COMMAND_LINE_ARGUMENT	OPTIONAL
VARIABLE_NAME	INNODB_RANDOM_READ_AHEAD
SESSION_VALUE	NULL
GLOBAL_VALUE	OFF
1733
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
1734 1735 1736 1737 1738 1739 1740 1741 1742 1743 1744 1745 1746
DEFAULT_VALUE	OFF
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	BOOLEAN
VARIABLE_COMMENT	Whether to use read ahead for random access within an extent.
NUMERIC_MIN_VALUE	NULL
NUMERIC_MAX_VALUE	NULL
NUMERIC_BLOCK_SIZE	NULL
ENUM_VALUE_LIST	NULL
READ_ONLY	NO
COMMAND_LINE_ARGUMENT	NONE
VARIABLE_NAME	INNODB_READ_AHEAD_THRESHOLD
SESSION_VALUE	NULL
GLOBAL_VALUE	56
1747
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
1748 1749 1750 1751 1752 1753 1754 1755 1756 1757 1758 1759 1760
DEFAULT_VALUE	56
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	BIGINT UNSIGNED
VARIABLE_COMMENT	Number of pages that must be accessed sequentially for InnoDB to trigger a readahead.
NUMERIC_MIN_VALUE	0
NUMERIC_MAX_VALUE	64
NUMERIC_BLOCK_SIZE	0
ENUM_VALUE_LIST	NULL
READ_ONLY	NO
COMMAND_LINE_ARGUMENT	REQUIRED
VARIABLE_NAME	INNODB_READ_IO_THREADS
SESSION_VALUE	NULL
GLOBAL_VALUE	2
1761
GLOBAL_VALUE_ORIGIN	CONFIG
1762 1763 1764 1765 1766 1767 1768 1769 1770 1771 1772 1773 1774
DEFAULT_VALUE	4
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	BIGINT UNSIGNED
VARIABLE_COMMENT	Number of background read I/O threads in InnoDB.
NUMERIC_MIN_VALUE	1
NUMERIC_MAX_VALUE	64
NUMERIC_BLOCK_SIZE	0
ENUM_VALUE_LIST	NULL
READ_ONLY	YES
COMMAND_LINE_ARGUMENT	REQUIRED
VARIABLE_NAME	INNODB_READ_ONLY
SESSION_VALUE	NULL
GLOBAL_VALUE	OFF
1775
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
1776 1777 1778 1779 1780 1781 1782 1783 1784 1785 1786 1787 1788
DEFAULT_VALUE	OFF
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	BOOLEAN
VARIABLE_COMMENT	Start InnoDB in read only mode (off by default)
NUMERIC_MIN_VALUE	NULL
NUMERIC_MAX_VALUE	NULL
NUMERIC_BLOCK_SIZE	NULL
ENUM_VALUE_LIST	NULL
READ_ONLY	YES
COMMAND_LINE_ARGUMENT	OPTIONAL
VARIABLE_NAME	INNODB_REPLICATION_DELAY
SESSION_VALUE	NULL
GLOBAL_VALUE	0
1789
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
1790 1791 1792 1793 1794 1795 1796 1797 1798 1799 1800 1801 1802
DEFAULT_VALUE	0
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	BIGINT UNSIGNED
VARIABLE_COMMENT	Replication thread delay (ms) on the slave server if innodb_thread_concurrency is reached (0 by default)
NUMERIC_MIN_VALUE	0
NUMERIC_MAX_VALUE	18446744073709551615
NUMERIC_BLOCK_SIZE	0
ENUM_VALUE_LIST	NULL
READ_ONLY	NO
COMMAND_LINE_ARGUMENT	REQUIRED
VARIABLE_NAME	INNODB_ROLLBACK_ON_TIMEOUT
SESSION_VALUE	NULL
GLOBAL_VALUE	OFF
1803
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
1804 1805 1806 1807 1808 1809 1810 1811 1812 1813 1814 1815 1816
DEFAULT_VALUE	OFF
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	BOOLEAN
VARIABLE_COMMENT	Roll back the complete transaction on lock wait timeout, for 4.x compatibility (disabled by default)
NUMERIC_MIN_VALUE	NULL
NUMERIC_MAX_VALUE	NULL
NUMERIC_BLOCK_SIZE	NULL
ENUM_VALUE_LIST	NULL
READ_ONLY	YES
COMMAND_LINE_ARGUMENT	OPTIONAL
VARIABLE_NAME	INNODB_ROLLBACK_SEGMENTS
SESSION_VALUE	NULL
GLOBAL_VALUE	128
1817
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
1818 1819 1820 1821 1822 1823 1824 1825 1826 1827 1828 1829 1830
DEFAULT_VALUE	128
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	BIGINT UNSIGNED
VARIABLE_COMMENT	Number of undo logs to use (deprecated).
NUMERIC_MIN_VALUE	1
NUMERIC_MAX_VALUE	128
NUMERIC_BLOCK_SIZE	0
ENUM_VALUE_LIST	NULL
READ_ONLY	NO
COMMAND_LINE_ARGUMENT	OPTIONAL
VARIABLE_NAME	INNODB_SAVED_PAGE_NUMBER_DEBUG
SESSION_VALUE	NULL
GLOBAL_VALUE	0
1831
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
1832 1833 1834 1835 1836 1837 1838 1839 1840 1841
DEFAULT_VALUE	0
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	BIGINT UNSIGNED
VARIABLE_COMMENT	An InnoDB page number.
NUMERIC_MIN_VALUE	0
NUMERIC_MAX_VALUE	4294967295
NUMERIC_BLOCK_SIZE	0
ENUM_VALUE_LIST	NULL
READ_ONLY	NO
COMMAND_LINE_ARGUMENT	OPTIONAL
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Monty committed
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VARIABLE_NAME	INNODB_SCRUB_FORCE_TESTING
SESSION_VALUE	NULL
GLOBAL_VALUE	OFF
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
DEFAULT_VALUE	OFF
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	BOOLEAN
VARIABLE_COMMENT	Perform extra scrubbing to increase test exposure
NUMERIC_MIN_VALUE	NULL
NUMERIC_MAX_VALUE	NULL
NUMERIC_BLOCK_SIZE	NULL
ENUM_VALUE_LIST	NULL
READ_ONLY	NO
COMMAND_LINE_ARGUMENT	REQUIRED
VARIABLE_NAME	INNODB_SCRUB_LOG
SESSION_VALUE	NULL
GLOBAL_VALUE	OFF
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
DEFAULT_VALUE	OFF
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	BOOLEAN
VARIABLE_COMMENT	Enable redo log scrubbing
NUMERIC_MIN_VALUE	NULL
NUMERIC_MAX_VALUE	NULL
NUMERIC_BLOCK_SIZE	NULL
ENUM_VALUE_LIST	NULL
READ_ONLY	YES
COMMAND_LINE_ARGUMENT	OPTIONAL
VARIABLE_NAME	INNODB_SCRUB_LOG_INTERVAL
SESSION_VALUE	NULL
GLOBAL_VALUE	2000
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
DEFAULT_VALUE	2000
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	BIGINT UNSIGNED
VARIABLE_COMMENT	Innodb redo log scrubbing interval in ms
NUMERIC_MIN_VALUE	10
NUMERIC_MAX_VALUE	18446744073709551615
NUMERIC_BLOCK_SIZE	0
ENUM_VALUE_LIST	NULL
READ_ONLY	NO
COMMAND_LINE_ARGUMENT	OPTIONAL
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Sergei Golubchik committed
1884 1885 1886 1887 1888 1889 1890 1891 1892 1893 1894 1895 1896 1897
VARIABLE_NAME	INNODB_SIMULATE_COMP_FAILURES
SESSION_VALUE	NULL
GLOBAL_VALUE	0
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
DEFAULT_VALUE	0
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	INT UNSIGNED
VARIABLE_COMMENT	Simulate compression failures.
NUMERIC_MIN_VALUE	0
NUMERIC_MAX_VALUE	99
NUMERIC_BLOCK_SIZE	0
ENUM_VALUE_LIST	NULL
READ_ONLY	NO
COMMAND_LINE_ARGUMENT	NONE
1898 1899 1900
VARIABLE_NAME	INNODB_SORT_BUFFER_SIZE
SESSION_VALUE	NULL
GLOBAL_VALUE	1048576
1901
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
1902 1903 1904 1905 1906 1907 1908 1909 1910 1911 1912 1913 1914
DEFAULT_VALUE	1048576
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	BIGINT UNSIGNED
VARIABLE_COMMENT	Memory buffer size for index creation
NUMERIC_MIN_VALUE	65536
NUMERIC_MAX_VALUE	67108864
NUMERIC_BLOCK_SIZE	0
ENUM_VALUE_LIST	NULL
READ_ONLY	YES
COMMAND_LINE_ARGUMENT	REQUIRED
VARIABLE_NAME	INNODB_SPIN_WAIT_DELAY
SESSION_VALUE	NULL
GLOBAL_VALUE	6
1915
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
1916 1917 1918 1919 1920 1921 1922 1923 1924 1925 1926 1927 1928
DEFAULT_VALUE	6
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	BIGINT UNSIGNED
VARIABLE_COMMENT	Maximum delay between polling for a spin lock (6 by default)
NUMERIC_MIN_VALUE	0
NUMERIC_MAX_VALUE	18446744073709551615
NUMERIC_BLOCK_SIZE	0
ENUM_VALUE_LIST	NULL
READ_ONLY	NO
COMMAND_LINE_ARGUMENT	OPTIONAL
VARIABLE_NAME	INNODB_STATS_AUTO_RECALC
SESSION_VALUE	NULL
GLOBAL_VALUE	ON
1929
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
1930 1931 1932 1933 1934 1935 1936 1937 1938 1939 1940 1941 1942
DEFAULT_VALUE	ON
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	BOOLEAN
VARIABLE_COMMENT	InnoDB automatic recalculation of persistent statistics enabled for all tables unless overridden at table level (automatic recalculation is only done when InnoDB decides that the table has changed too much and needs a new statistics)
NUMERIC_MIN_VALUE	NULL
NUMERIC_MAX_VALUE	NULL
NUMERIC_BLOCK_SIZE	NULL
ENUM_VALUE_LIST	NULL
READ_ONLY	NO
COMMAND_LINE_ARGUMENT	OPTIONAL
VARIABLE_NAME	INNODB_STATS_METHOD
SESSION_VALUE	NULL
GLOBAL_VALUE	nulls_equal
1943
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
1944 1945 1946 1947 1948 1949 1950 1951 1952 1953
DEFAULT_VALUE	nulls_equal
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	ENUM
VARIABLE_COMMENT	Specifies how InnoDB index statistics collection code should treat NULLs. Possible values are NULLS_EQUAL (default), NULLS_UNEQUAL and NULLS_IGNORED
NUMERIC_MIN_VALUE	NULL
NUMERIC_MAX_VALUE	NULL
NUMERIC_BLOCK_SIZE	NULL
ENUM_VALUE_LIST	nulls_equal,nulls_unequal,nulls_ignored
READ_ONLY	NO
COMMAND_LINE_ARGUMENT	REQUIRED
1954 1955 1956 1957 1958 1959 1960 1961 1962 1963 1964 1965 1966 1967
VARIABLE_NAME	INNODB_STATS_MODIFIED_COUNTER
SESSION_VALUE	NULL
GLOBAL_VALUE	0
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
DEFAULT_VALUE	0
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	BIGINT UNSIGNED
VARIABLE_COMMENT	The number of rows modified before we calculate new statistics (default 0 = current limits)
NUMERIC_MIN_VALUE	0
NUMERIC_MAX_VALUE	18446744073709551615
NUMERIC_BLOCK_SIZE	0
ENUM_VALUE_LIST	NULL
READ_ONLY	NO
COMMAND_LINE_ARGUMENT	REQUIRED
1968 1969 1970
VARIABLE_NAME	INNODB_STATS_ON_METADATA
SESSION_VALUE	NULL
GLOBAL_VALUE	OFF
1971
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
1972 1973 1974 1975 1976 1977 1978 1979 1980 1981 1982 1983 1984
DEFAULT_VALUE	OFF
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	BOOLEAN
VARIABLE_COMMENT	Enable statistics gathering for metadata commands such as SHOW TABLE STATUS for tables that use transient statistics (off by default)
NUMERIC_MIN_VALUE	NULL
NUMERIC_MAX_VALUE	NULL
NUMERIC_BLOCK_SIZE	NULL
ENUM_VALUE_LIST	NULL
READ_ONLY	NO
COMMAND_LINE_ARGUMENT	OPTIONAL
VARIABLE_NAME	INNODB_STATS_PERSISTENT
SESSION_VALUE	NULL
GLOBAL_VALUE	OFF
1985
GLOBAL_VALUE_ORIGIN	CONFIG
1986 1987 1988 1989 1990 1991 1992 1993 1994 1995 1996 1997 1998
DEFAULT_VALUE	ON
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	BOOLEAN
VARIABLE_COMMENT	InnoDB persistent statistics enabled for all tables unless overridden at table level
NUMERIC_MIN_VALUE	NULL
NUMERIC_MAX_VALUE	NULL
NUMERIC_BLOCK_SIZE	NULL
ENUM_VALUE_LIST	NULL
READ_ONLY	NO
COMMAND_LINE_ARGUMENT	OPTIONAL
VARIABLE_NAME	INNODB_STATS_PERSISTENT_SAMPLE_PAGES
SESSION_VALUE	NULL
GLOBAL_VALUE	20
1999
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012
DEFAULT_VALUE	20
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	BIGINT UNSIGNED
VARIABLE_COMMENT	The number of leaf index pages to sample when calculating persistent statistics (by ANALYZE, default 20)
NUMERIC_MIN_VALUE	1
NUMERIC_MAX_VALUE	18446744073709551615
NUMERIC_BLOCK_SIZE	0
ENUM_VALUE_LIST	NULL
READ_ONLY	NO
COMMAND_LINE_ARGUMENT	REQUIRED
VARIABLE_NAME	INNODB_STATS_SAMPLE_PAGES
SESSION_VALUE	NULL
GLOBAL_VALUE	8
2013
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
2014 2015 2016 2017 2018 2019 2020 2021 2022 2023
DEFAULT_VALUE	8
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	BIGINT UNSIGNED
VARIABLE_COMMENT	Deprecated, use innodb_stats_transient_sample_pages instead
NUMERIC_MIN_VALUE	1
NUMERIC_MAX_VALUE	18446744073709551615
NUMERIC_BLOCK_SIZE	0
ENUM_VALUE_LIST	NULL
READ_ONLY	NO
COMMAND_LINE_ARGUMENT	REQUIRED
2024 2025 2026 2027 2028 2029 2030 2031 2032 2033 2034 2035 2036 2037
VARIABLE_NAME	INNODB_STATS_TRADITIONAL
SESSION_VALUE	NULL
GLOBAL_VALUE	ON
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
DEFAULT_VALUE	ON
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	BOOLEAN
VARIABLE_COMMENT	Enable traditional statistic calculation based on number of configured pages (default true)
NUMERIC_MIN_VALUE	NULL
NUMERIC_MAX_VALUE	NULL
NUMERIC_BLOCK_SIZE	NULL
ENUM_VALUE_LIST	NULL
READ_ONLY	NO
COMMAND_LINE_ARGUMENT	REQUIRED
2038 2039 2040
VARIABLE_NAME	INNODB_STATS_TRANSIENT_SAMPLE_PAGES
SESSION_VALUE	NULL
GLOBAL_VALUE	8
2041
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
2042 2043 2044 2045 2046 2047 2048 2049 2050 2051 2052 2053 2054
DEFAULT_VALUE	8
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	BIGINT UNSIGNED
VARIABLE_COMMENT	The number of leaf index pages to sample when calculating transient statistics (if persistent statistics are not used, default 8)
NUMERIC_MIN_VALUE	1
NUMERIC_MAX_VALUE	18446744073709551615
NUMERIC_BLOCK_SIZE	0
ENUM_VALUE_LIST	NULL
READ_ONLY	NO
COMMAND_LINE_ARGUMENT	REQUIRED
VARIABLE_NAME	INNODB_STATUS_OUTPUT
SESSION_VALUE	NULL
GLOBAL_VALUE	OFF
2055
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
2056 2057 2058 2059 2060 2061 2062 2063 2064 2065 2066 2067 2068
DEFAULT_VALUE	OFF
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	BOOLEAN
VARIABLE_COMMENT	Enable InnoDB monitor output to the error log.
NUMERIC_MIN_VALUE	NULL
NUMERIC_MAX_VALUE	NULL
NUMERIC_BLOCK_SIZE	NULL
ENUM_VALUE_LIST	NULL
READ_ONLY	NO
COMMAND_LINE_ARGUMENT	OPTIONAL
VARIABLE_NAME	INNODB_STATUS_OUTPUT_LOCKS
SESSION_VALUE	NULL
GLOBAL_VALUE	OFF
2069
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
2070 2071 2072 2073 2074 2075 2076 2077 2078 2079 2080 2081 2082
DEFAULT_VALUE	OFF
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	BOOLEAN
VARIABLE_COMMENT	Enable InnoDB lock monitor output to the error log. Requires innodb_status_output=ON.
NUMERIC_MIN_VALUE	NULL
NUMERIC_MAX_VALUE	NULL
NUMERIC_BLOCK_SIZE	NULL
ENUM_VALUE_LIST	NULL
READ_ONLY	NO
COMMAND_LINE_ARGUMENT	OPTIONAL
VARIABLE_NAME	INNODB_STRICT_MODE
SESSION_VALUE	OFF
GLOBAL_VALUE	OFF
2083
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
2084 2085 2086 2087 2088 2089 2090 2091 2092 2093 2094 2095 2096
DEFAULT_VALUE	OFF
VARIABLE_SCOPE	SESSION
VARIABLE_TYPE	BOOLEAN
VARIABLE_COMMENT	Use strict mode when evaluating create options.
NUMERIC_MIN_VALUE	NULL
NUMERIC_MAX_VALUE	NULL
NUMERIC_BLOCK_SIZE	NULL
ENUM_VALUE_LIST	NULL
READ_ONLY	NO
COMMAND_LINE_ARGUMENT	OPTIONAL
VARIABLE_NAME	INNODB_SUPPORT_XA
SESSION_VALUE	ON
GLOBAL_VALUE	ON
2097
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
2098 2099 2100 2101 2102 2103 2104 2105 2106 2107 2108 2109 2110
DEFAULT_VALUE	ON
VARIABLE_SCOPE	SESSION
VARIABLE_TYPE	BOOLEAN
VARIABLE_COMMENT	Enable InnoDB support for the XA two-phase commit
NUMERIC_MIN_VALUE	NULL
NUMERIC_MAX_VALUE	NULL
NUMERIC_BLOCK_SIZE	NULL
ENUM_VALUE_LIST	NULL
READ_ONLY	NO
COMMAND_LINE_ARGUMENT	OPTIONAL
VARIABLE_NAME	INNODB_SYNC_ARRAY_SIZE
SESSION_VALUE	NULL
GLOBAL_VALUE	1
2111
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
2112 2113 2114 2115 2116 2117 2118 2119 2120 2121 2122 2123 2124
DEFAULT_VALUE	1
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	BIGINT UNSIGNED
VARIABLE_COMMENT	Size of the mutex/lock wait array.
NUMERIC_MIN_VALUE	1
NUMERIC_MAX_VALUE	1024
NUMERIC_BLOCK_SIZE	0
ENUM_VALUE_LIST	NULL
READ_ONLY	YES
COMMAND_LINE_ARGUMENT	OPTIONAL
VARIABLE_NAME	INNODB_SYNC_SPIN_LOOPS
SESSION_VALUE	NULL
GLOBAL_VALUE	30
2125
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
2126 2127 2128 2129 2130 2131 2132 2133 2134 2135 2136 2137 2138
DEFAULT_VALUE	30
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	BIGINT UNSIGNED
VARIABLE_COMMENT	Count of spin-loop rounds in InnoDB mutexes (30 by default)
NUMERIC_MIN_VALUE	0
NUMERIC_MAX_VALUE	18446744073709551615
NUMERIC_BLOCK_SIZE	0
ENUM_VALUE_LIST	NULL
READ_ONLY	NO
COMMAND_LINE_ARGUMENT	REQUIRED
VARIABLE_NAME	INNODB_TABLE_LOCKS
SESSION_VALUE	ON
GLOBAL_VALUE	ON
2139
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
2140 2141 2142 2143 2144 2145 2146 2147 2148 2149 2150 2151 2152
DEFAULT_VALUE	ON
VARIABLE_SCOPE	SESSION
VARIABLE_TYPE	BOOLEAN
VARIABLE_COMMENT	Enable InnoDB locking in LOCK TABLES
NUMERIC_MIN_VALUE	NULL
NUMERIC_MAX_VALUE	NULL
NUMERIC_BLOCK_SIZE	NULL
ENUM_VALUE_LIST	NULL
READ_ONLY	NO
COMMAND_LINE_ARGUMENT	OPTIONAL
VARIABLE_NAME	INNODB_THREAD_CONCURRENCY
SESSION_VALUE	NULL
GLOBAL_VALUE	0
2153
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
2154 2155 2156 2157 2158 2159 2160 2161 2162 2163 2164 2165 2166
DEFAULT_VALUE	0
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	BIGINT UNSIGNED
VARIABLE_COMMENT	Helps in performance tuning in heavily concurrent environments. Sets the maximum number of threads allowed inside InnoDB. Value 0 will disable the thread throttling.
NUMERIC_MIN_VALUE	0
NUMERIC_MAX_VALUE	1000
NUMERIC_BLOCK_SIZE	0
ENUM_VALUE_LIST	NULL
READ_ONLY	NO
COMMAND_LINE_ARGUMENT	REQUIRED
VARIABLE_NAME	INNODB_THREAD_SLEEP_DELAY
SESSION_VALUE	NULL
GLOBAL_VALUE	10000
2167
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
2168 2169 2170 2171 2172 2173 2174 2175 2176 2177 2178 2179 2180
DEFAULT_VALUE	10000
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	BIGINT UNSIGNED
VARIABLE_COMMENT	Time of innodb thread sleeping before joining InnoDB queue (usec). Value 0 disable a sleep
NUMERIC_MIN_VALUE	0
NUMERIC_MAX_VALUE	1000000
NUMERIC_BLOCK_SIZE	0
ENUM_VALUE_LIST	NULL
READ_ONLY	NO
COMMAND_LINE_ARGUMENT	REQUIRED
VARIABLE_NAME	INNODB_TRX_PURGE_VIEW_UPDATE_ONLY_DEBUG
SESSION_VALUE	NULL
GLOBAL_VALUE	OFF
2181
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
2182 2183 2184 2185 2186 2187 2188 2189 2190 2191 2192 2193 2194
DEFAULT_VALUE	OFF
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	BOOLEAN
VARIABLE_COMMENT	Pause actual purging any delete-marked records, but merely update the purge view. It is to create artificially the situation the purge view have been updated but the each purges were not done yet.
NUMERIC_MIN_VALUE	NULL
NUMERIC_MAX_VALUE	NULL
NUMERIC_BLOCK_SIZE	NULL
ENUM_VALUE_LIST	NULL
READ_ONLY	NO
COMMAND_LINE_ARGUMENT	NULL
VARIABLE_NAME	INNODB_TRX_RSEG_N_SLOTS_DEBUG
SESSION_VALUE	NULL
GLOBAL_VALUE	0
2195
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
2196 2197 2198 2199 2200 2201 2202 2203 2204 2205 2206 2207 2208
DEFAULT_VALUE	0
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	INT UNSIGNED
VARIABLE_COMMENT	Debug flags for InnoDB to limit TRX_RSEG_N_SLOTS for trx_rsegf_undo_find_free()
NUMERIC_MIN_VALUE	0
NUMERIC_MAX_VALUE	1024
NUMERIC_BLOCK_SIZE	0
ENUM_VALUE_LIST	NULL
READ_ONLY	NO
COMMAND_LINE_ARGUMENT	NULL
VARIABLE_NAME	INNODB_UNDO_DIRECTORY
SESSION_VALUE	NULL
GLOBAL_VALUE	.
2209
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
2210 2211 2212 2213 2214 2215 2216 2217 2218 2219 2220 2221 2222
DEFAULT_VALUE	.
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	VARCHAR
VARIABLE_COMMENT	Directory where undo tablespace files live, this path can be absolute.
NUMERIC_MIN_VALUE	NULL
NUMERIC_MAX_VALUE	NULL
NUMERIC_BLOCK_SIZE	NULL
ENUM_VALUE_LIST	NULL
READ_ONLY	YES
COMMAND_LINE_ARGUMENT	REQUIRED
VARIABLE_NAME	INNODB_UNDO_LOGS
SESSION_VALUE	NULL
GLOBAL_VALUE	128
2223
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
2224 2225 2226 2227 2228 2229 2230 2231 2232 2233 2234 2235 2236
DEFAULT_VALUE	128
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	BIGINT UNSIGNED
VARIABLE_COMMENT	Number of undo logs to use.
NUMERIC_MIN_VALUE	1
NUMERIC_MAX_VALUE	128
NUMERIC_BLOCK_SIZE	0
ENUM_VALUE_LIST	NULL
READ_ONLY	NO
COMMAND_LINE_ARGUMENT	OPTIONAL
VARIABLE_NAME	INNODB_UNDO_TABLESPACES
SESSION_VALUE	NULL
GLOBAL_VALUE	0
2237
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
2238 2239 2240 2241 2242 2243 2244 2245 2246 2247 2248 2249 2250
DEFAULT_VALUE	0
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	BIGINT UNSIGNED
VARIABLE_COMMENT	Number of undo tablespaces to use. 
NUMERIC_MIN_VALUE	0
NUMERIC_MAX_VALUE	126
NUMERIC_BLOCK_SIZE	0
ENUM_VALUE_LIST	NULL
READ_ONLY	YES
COMMAND_LINE_ARGUMENT	REQUIRED
VARIABLE_NAME	INNODB_USE_ATOMIC_WRITES
SESSION_VALUE	NULL
GLOBAL_VALUE	OFF
2251
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
2252 2253 2254 2255 2256 2257 2258 2259 2260 2261 2262 2263 2264
DEFAULT_VALUE	OFF
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	BOOLEAN
VARIABLE_COMMENT	Prevent partial page writes, via atomic writes.The option is used to prevent partial writes in case of a crash/poweroff, as faster alternative to doublewrite buffer.Currently this option works only on Linux only with FusionIO device, and directFS filesystem.
NUMERIC_MIN_VALUE	NULL
NUMERIC_MAX_VALUE	NULL
NUMERIC_BLOCK_SIZE	NULL
ENUM_VALUE_LIST	NULL
READ_ONLY	YES
COMMAND_LINE_ARGUMENT	NONE
VARIABLE_NAME	INNODB_USE_FALLOCATE
SESSION_VALUE	NULL
GLOBAL_VALUE	OFF
2265
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
2266 2267 2268 2269 2270 2271 2272 2273 2274 2275 2276 2277 2278
DEFAULT_VALUE	OFF
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	BOOLEAN
VARIABLE_COMMENT	Preallocate files fast, using operating system functionality. On POSIX systems, posix_fallocate system call is used.
NUMERIC_MIN_VALUE	NULL
NUMERIC_MAX_VALUE	NULL
NUMERIC_BLOCK_SIZE	NULL
ENUM_VALUE_LIST	NULL
READ_ONLY	YES
COMMAND_LINE_ARGUMENT	NONE
VARIABLE_NAME	INNODB_USE_MTFLUSH
SESSION_VALUE	NULL
GLOBAL_VALUE	OFF
2279
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
2280 2281 2282 2283 2284 2285 2286 2287 2288 2289 2290 2291 2292
DEFAULT_VALUE	OFF
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	BOOLEAN
VARIABLE_COMMENT	Use multi-threaded flush. Default FALSE.
NUMERIC_MIN_VALUE	NULL
NUMERIC_MAX_VALUE	NULL
NUMERIC_BLOCK_SIZE	NULL
ENUM_VALUE_LIST	NULL
READ_ONLY	YES
COMMAND_LINE_ARGUMENT	NONE
VARIABLE_NAME	INNODB_USE_SYS_MALLOC
SESSION_VALUE	NULL
GLOBAL_VALUE	ON
2293
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
2294 2295 2296 2297 2298 2299 2300 2301 2302 2303 2304 2305 2306
DEFAULT_VALUE	ON
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	BOOLEAN
VARIABLE_COMMENT	DEPRECATED. This option may be removed in future releases, together with the InnoDB's internal memory allocator. Use OS memory allocator instead of InnoDB's internal memory allocator
NUMERIC_MIN_VALUE	NULL
NUMERIC_MAX_VALUE	NULL
NUMERIC_BLOCK_SIZE	NULL
ENUM_VALUE_LIST	NULL
READ_ONLY	YES
COMMAND_LINE_ARGUMENT	NONE
VARIABLE_NAME	INNODB_USE_TRIM
SESSION_VALUE	NULL
GLOBAL_VALUE	OFF
2307
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
2308 2309 2310 2311 2312 2313 2314 2315 2316 2317 2318 2319
DEFAULT_VALUE	OFF
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	BOOLEAN
VARIABLE_COMMENT	Use trim. Default FALSE.
NUMERIC_MIN_VALUE	NULL
NUMERIC_MAX_VALUE	NULL
NUMERIC_BLOCK_SIZE	NULL
ENUM_VALUE_LIST	NULL
READ_ONLY	NO
COMMAND_LINE_ARGUMENT	OPTIONAL
VARIABLE_NAME	INNODB_VERSION
SESSION_VALUE	NULL
2320
GLOBAL_VALUE	5.6.23
2321
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
2322 2323 2324 2325 2326 2327 2328 2329 2330 2331 2332 2333 2334
DEFAULT_VALUE	NULL
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	VARCHAR
VARIABLE_COMMENT	InnoDB version
NUMERIC_MIN_VALUE	NULL
NUMERIC_MAX_VALUE	NULL
NUMERIC_BLOCK_SIZE	NULL
ENUM_VALUE_LIST	NULL
READ_ONLY	YES
COMMAND_LINE_ARGUMENT	NULL
VARIABLE_NAME	INNODB_WRITE_IO_THREADS
SESSION_VALUE	NULL
GLOBAL_VALUE	2
2335
GLOBAL_VALUE_ORIGIN	CONFIG
2336 2337 2338 2339 2340 2341 2342 2343 2344 2345
DEFAULT_VALUE	4
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	BIGINT UNSIGNED
VARIABLE_COMMENT	Number of background write I/O threads in InnoDB.
NUMERIC_MIN_VALUE	1
NUMERIC_MAX_VALUE	64
NUMERIC_BLOCK_SIZE	0
ENUM_VALUE_LIST	NULL
READ_ONLY	YES
COMMAND_LINE_ARGUMENT	REQUIRED