sysvars_innodb.result 60 KB
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select * from information_schema.system_variables
where variable_name like 'innodb%' and not variable_name = 'innodb_disallow_writes'
  order by variable_name;
VARIABLE_NAME	INNODB_ADAPTIVE_FLUSHING
SESSION_VALUE	NULL
GLOBAL_VALUE	ON
7
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
8 9 10 11 12 13 14 15 16 17 18 19 20
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
GLOBAL_VALUE	10
21
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
22 23 24 25 26 27 28 29 30 31 32 33 34
DEFAULT_VALUE	10
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	BIGINT UNSIGNED
VARIABLE_COMMENT	Percentage of log capacity below which no adaptive flushing happens.
NUMERIC_MIN_VALUE	0
NUMERIC_MAX_VALUE	70
NUMERIC_BLOCK_SIZE	0
ENUM_VALUE_LIST	NULL
READ_ONLY	NO
COMMAND_LINE_ARGUMENT	REQUIRED
VARIABLE_NAME	INNODB_ADAPTIVE_HASH_INDEX
SESSION_VALUE	NULL
GLOBAL_VALUE	ON
35
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
36 37 38 39 40 41 42 43 44 45 46 47 48
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
49
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
50 51 52 53 54 55 56 57 58 59 60 61 62
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
63
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
64 65 66 67 68 69 70 71 72 73 74 75 76
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
77
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
78 79 80 81 82 83 84 85 86 87 88 89 90
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
91
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
92 93 94 95 96 97 98 99 100 101 102 103 104
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
105
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
106 107 108 109 110 111 112 113 114 115 116 117 118
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
119
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
120 121 122 123 124 125 126 127 128 129 130 131 132
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
133
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
134 135 136 137 138 139 140 141 142 143 144 145 146
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
147
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
148 149 150 151 152 153 154 155 156 157 158 159 160
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
161
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
162 163 164 165 166 167 168 169 170 171 172 173 174
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
VARIABLE_NAME	INNODB_BUFFER_POOL_DUMP_AT_SHUTDOWN
SESSION_VALUE	NULL
GLOBAL_VALUE	OFF
175
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
176 177 178 179 180 181 182 183 184 185 186 187 188
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
189
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
190 191 192 193 194 195 196 197 198 199 200 201 202
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	
203
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
204 205 206 207 208 209 210 211 212 213 214 215 216
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
217
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
218 219 220 221 222 223 224 225 226 227 228 229 230
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
231
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
232 233 234 235 236 237 238 239 240 241 242 243 244
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
245
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
246 247 248 249 250 251 252 253 254 255 256 257 258
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
259
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
260 261 262 263 264 265 266 267 268 269 270 271 272
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
273
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
274 275 276 277 278 279 280 281 282 283 284 285 286
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
287
GLOBAL_VALUE_ORIGIN	CONFIG
288 289 290 291 292 293 294 295 296 297 298 299 300
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
301
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
302 303 304 305 306 307 308 309 310 311 312 313 314
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
315
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
316 317 318 319 320 321 322 323 324 325 326 327 328
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
329
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
330 331 332 333 334 335 336 337 338 339 340 341 342
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
343
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
344 345 346 347 348 349 350 351 352 353 354 355 356
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
357
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
358 359 360 361 362 363 364 365 366 367 368 369 370
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
371
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
372 373 374 375 376 377 378 379 380 381 382 383 384
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
385
GLOBAL_VALUE_ORIGIN	CONFIG
386 387 388 389 390 391 392 393 394 395 396 397 398
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
399
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
400 401 402 403 404 405 406 407 408 409 410 411 412
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
413
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
414 415 416 417 418 419 420 421 422 423 424 425 426
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
ENUM_VALUE_LIST	none,zlib,lz4,lzo,lzma,bzip2
READ_ONLY	NO
COMMAND_LINE_ARGUMENT	OPTIONAL
VARIABLE_NAME	INNODB_COMPRESSION_FAILURE_THRESHOLD_PCT
SESSION_VALUE	NULL
GLOBAL_VALUE	5
427
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
428 429 430 431 432 433 434 435 436 437 438 439 440
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
441
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
442 443 444 445 446 447 448 449 450 451 452 453 454
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
455
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
456 457 458 459 460 461 462 463 464 465 466 467 468
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
469
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
470 471 472 473 474 475 476 477 478 479 480 481 482
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
483
GLOBAL_VALUE_ORIGIN	CONFIG
484 485 486 487 488 489 490 491 492 493 494 495 496
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	
497
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
498 499 500 501 502 503 504 505 506 507 508 509 510
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
VARIABLE_NAME	INNODB_DEFRAGMENT
SESSION_VALUE	NULL
GLOBAL_VALUE	OFF
511
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
512 513 514 515 516 517 518 519 520 521 522 523 524
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
525
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
526 527 528 529 530 531 532 533 534 535 536 537 538
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
539
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
540 541 542 543 544 545 546 547 548 549 550 551 552
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
553
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
554 555 556 557 558 559 560 561 562 563 564 565 566
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
567
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
568 569 570 571 572 573 574 575 576 577 578 579 580
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
581
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
582 583 584 585 586 587 588 589 590 591 592 593 594
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
595
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
596 597 598 599 600 601 602 603 604 605 606 607 608
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
609
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
610 611 612 613 614 615 616 617 618 619 620 621 622
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
623
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
624 625 626 627 628 629 630 631 632 633 634 635 636
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
637
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
638 639 640 641 642 643 644 645 646 647 648 649 650
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
VARIABLE_NAME	INNODB_FAST_SHUTDOWN
SESSION_VALUE	NULL
GLOBAL_VALUE	1
651
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
652 653 654 655 656 657 658 659 660 661 662 663 664
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
VARIABLE_NAME	INNODB_FILE_FORMAT
SESSION_VALUE	NULL
GLOBAL_VALUE	Antelope
665
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
666 667 668 669 670 671 672 673 674 675 676 677 678
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
679
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
680 681 682 683 684 685 686 687 688 689 690 691 692
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
693
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
694 695 696 697 698 699 700 701 702 703 704 705 706
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
707
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
708 709 710 711 712 713 714 715 716 717 718 719 720
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
721
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
722 723 724 725 726 727 728 729 730 731 732 733 734
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
735
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
736 737 738 739 740 741 742 743 744 745 746 747 748
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
749
GLOBAL_VALUE_ORIGIN	CONFIG
750 751 752 753 754 755 756 757 758 759 760 761 762
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
763
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
764 765 766 767 768 769 770 771 772 773 774 775 776
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	
777
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
778 779 780 781 782 783 784 785 786 787 788 789 790
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
791
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
792 793 794 795 796 797 798 799 800 801 802 803 804
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
805
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
806 807 808 809 810 811 812 813 814 815 816 817 818
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
819
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
820 821 822 823 824 825 826 827 828 829 830 831 832
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
833
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
834 835 836 837 838 839 840 841 842 843 844 845 846
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
847
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
848 849 850 851 852 853 854 855 856 857 858 859 860
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	
861
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
862 863 864 865 866 867 868 869 870 871 872 873 874
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
875
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
876 877 878 879 880 881 882 883 884 885 886 887 888
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
889
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
890 891 892 893 894 895 896 897 898 899 900 901 902
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
903
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
904 905 906 907 908 909 910 911 912 913 914 915 916
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
917
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
918 919 920 921 922 923 924 925 926 927 928 929 930
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
931
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
932 933 934 935 936 937 938 939 940 941 942 943 944
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
945
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
946 947 948 949 950 951 952 953 954 955 956 957 958
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
959
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
960 961 962 963 964 965 966 967 968 969 970 971 972
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	
973
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
974 975 976 977 978 979 980 981 982 983 984 985 986
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
987
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
988 989 990 991 992 993 994 995 996 997 998 999 1000
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
1001
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
1002 1003 1004 1005 1006 1007 1008 1009 1010 1011 1012 1013 1014
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	
1015
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
1016 1017 1018 1019 1020 1021 1022 1023 1024 1025 1026 1027 1028
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
VARIABLE_NAME	INNODB_IO_CAPACITY
SESSION_VALUE	NULL
GLOBAL_VALUE	200
1029
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
1030 1031 1032 1033 1034 1035 1036 1037 1038 1039 1040 1041 1042
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
1043
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
1044 1045 1046 1047 1048 1049 1050 1051 1052 1053 1054 1055 1056
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
1057
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
1058 1059 1060 1061 1062 1063 1064 1065 1066 1067 1068 1069 1070
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
1071
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
1072 1073 1074 1075 1076 1077 1078 1079 1080 1081 1082 1083 1084
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
1085
GLOBAL_VALUE_ORIGIN	CONFIG
1086 1087 1088 1089 1090 1091 1092 1093 1094 1095 1096 1097 1098
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
1099
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
1100 1101 1102 1103 1104 1105 1106 1107 1108 1109 1110 1111 1112
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
1113
GLOBAL_VALUE_ORIGIN	CONFIG
1114 1115 1116 1117 1118 1119 1120 1121 1122 1123 1124 1125 1126
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
1127
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
1128 1129 1130 1131 1132 1133 1134 1135 1136 1137 1138 1139 1140
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
GLOBAL_VALUE	ON
1141
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
1142 1143 1144 1145 1146 1147 1148 1149 1150 1151 1152 1153 1154
DEFAULT_VALUE	ON
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
1155
GLOBAL_VALUE_ORIGIN	CONFIG
1156 1157 1158 1159 1160 1161 1162 1163 1164 1165 1166 1167 1168
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
1169
GLOBAL_VALUE_ORIGIN	CONFIG
1170 1171 1172 1173 1174 1175 1176 1177 1178 1179 1180 1181 1182
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
1183
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
1184 1185 1186 1187 1188 1189 1190 1191 1192 1193 1194 1195 1196
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
1197
GLOBAL_VALUE_ORIGIN	CONFIG
1198 1199 1200 1201 1202 1203 1204 1205 1206 1207 1208 1209 1210
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
GLOBAL_VALUE	75
1211
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
1212 1213 1214 1215 1216 1217 1218 1219 1220 1221 1222 1223 1224
DEFAULT_VALUE	75
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	BIGINT UNSIGNED
VARIABLE_COMMENT	Percentage of dirty pages allowed in bufferpool.
NUMERIC_MIN_VALUE	0
NUMERIC_MAX_VALUE	99
NUMERIC_BLOCK_SIZE	0
ENUM_VALUE_LIST	NULL
READ_ONLY	NO
COMMAND_LINE_ARGUMENT	REQUIRED
VARIABLE_NAME	INNODB_MAX_DIRTY_PAGES_PCT_LWM
SESSION_VALUE	NULL
GLOBAL_VALUE	0
1225
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
1226 1227 1228 1229 1230 1231 1232 1233 1234 1235 1236 1237 1238
DEFAULT_VALUE	0
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	BIGINT UNSIGNED
VARIABLE_COMMENT	Percentage of dirty pages at which flushing kicks in.
NUMERIC_MIN_VALUE	0
NUMERIC_MAX_VALUE	99
NUMERIC_BLOCK_SIZE	0
ENUM_VALUE_LIST	NULL
READ_ONLY	NO
COMMAND_LINE_ARGUMENT	REQUIRED
VARIABLE_NAME	INNODB_MAX_PURGE_LAG
SESSION_VALUE	NULL
GLOBAL_VALUE	0
1239
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
1240 1241 1242 1243 1244 1245 1246 1247 1248 1249 1250 1251 1252
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
1253
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
1254 1255 1256 1257 1258 1259 1260 1261 1262 1263 1264 1265 1266
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
1267
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
1268 1269 1270 1271 1272 1273 1274 1275 1276 1277 1278 1279 1280
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	
1281
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
1282 1283 1284 1285 1286 1287 1288 1289 1290 1291 1292 1293 1294
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	
1295
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
1296 1297 1298 1299 1300 1301 1302 1303 1304 1305 1306 1307 1308
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	
1309
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
1310 1311 1312 1313 1314 1315 1316 1317 1318 1319 1320 1321 1322
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	
1323
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
1324 1325 1326 1327 1328 1329 1330 1331 1332 1333 1334 1335 1336
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
1337
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
1338 1339 1340 1341 1342 1343 1344 1345 1346 1347 1348 1349 1350
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
1351
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
1352 1353 1354 1355 1356 1357 1358 1359 1360 1361 1362 1363 1364
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
1365
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
1366 1367 1368 1369 1370 1371 1372 1373 1374 1375 1376 1377 1378
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
1379
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
1380 1381 1382 1383 1384 1385 1386 1387 1388 1389 1390 1391 1392
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
1393
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
1394 1395 1396 1397 1398 1399 1400 1401 1402 1403 1404 1405 1406
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
1407
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
1408 1409 1410 1411 1412 1413 1414 1415 1416 1417 1418 1419 1420
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
1421
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
1422 1423 1424 1425 1426 1427 1428 1429 1430 1431 1432 1433 1434
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
1435
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
1436 1437 1438 1439 1440 1441 1442 1443 1444 1445 1446 1447 1448
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
VARIABLE_NAME	INNODB_PRINT_ALL_DEADLOCKS
SESSION_VALUE	NULL
GLOBAL_VALUE	OFF
1449
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
1450 1451 1452 1453 1454 1455 1456 1457 1458 1459 1460 1461 1462
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
1463
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
1464 1465 1466 1467 1468 1469 1470 1471 1472 1473 1474 1475 1476
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
1477
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
1478 1479 1480 1481 1482 1483 1484 1485 1486 1487 1488 1489 1490
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
1491
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
1492 1493 1494 1495 1496 1497 1498 1499 1500 1501 1502 1503 1504
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
1505
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
1506 1507 1508 1509 1510 1511 1512 1513 1514 1515 1516 1517 1518
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
1519
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
1520 1521 1522 1523 1524 1525 1526 1527 1528 1529 1530 1531 1532
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
1533
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
1534 1535 1536 1537 1538 1539 1540 1541 1542 1543 1544 1545 1546
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
1547
GLOBAL_VALUE_ORIGIN	CONFIG
1548 1549 1550 1551 1552 1553 1554 1555 1556 1557 1558 1559 1560
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
1561
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
1562 1563 1564 1565 1566 1567 1568 1569 1570 1571 1572 1573 1574
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
1575
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
1576 1577 1578 1579 1580 1581 1582 1583 1584 1585 1586 1587 1588
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
1589
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
1590 1591 1592 1593 1594 1595 1596 1597 1598 1599 1600 1601 1602
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
1603
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
1604 1605 1606 1607 1608 1609 1610 1611 1612 1613 1614 1615 1616
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
1617
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
1618 1619 1620 1621 1622 1623 1624 1625 1626 1627 1628 1629 1630
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
VARIABLE_NAME	INNODB_SORT_BUFFER_SIZE
SESSION_VALUE	NULL
GLOBAL_VALUE	1048576
1631
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
1632 1633 1634 1635 1636 1637 1638 1639 1640 1641 1642 1643 1644
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
1645
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
1646 1647 1648 1649 1650 1651 1652 1653 1654 1655 1656 1657 1658
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
1659
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
1660 1661 1662 1663 1664 1665 1666 1667 1668 1669 1670 1671 1672
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
1673
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
1674 1675 1676 1677 1678 1679 1680 1681 1682 1683 1684 1685 1686
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
VARIABLE_NAME	INNODB_STATS_ON_METADATA
SESSION_VALUE	NULL
GLOBAL_VALUE	OFF
1687
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
1688 1689 1690 1691 1692 1693 1694 1695 1696 1697 1698 1699 1700
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
1701
GLOBAL_VALUE_ORIGIN	CONFIG
1702 1703 1704 1705 1706 1707 1708 1709 1710 1711 1712 1713 1714
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
1715
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
1716 1717 1718 1719 1720 1721 1722 1723 1724 1725 1726 1727 1728
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
1729
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
1730 1731 1732 1733 1734 1735 1736 1737 1738 1739 1740 1741 1742
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
VARIABLE_NAME	INNODB_STATS_TRANSIENT_SAMPLE_PAGES
SESSION_VALUE	NULL
GLOBAL_VALUE	8
1743
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
1744 1745 1746 1747 1748 1749 1750 1751 1752 1753 1754 1755 1756
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
1757
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
1758 1759 1760 1761 1762 1763 1764 1765 1766 1767 1768 1769 1770
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
1771
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
1772 1773 1774 1775 1776 1777 1778 1779 1780 1781 1782 1783 1784
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
1785
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
1786 1787 1788 1789 1790 1791 1792 1793 1794 1795 1796 1797 1798
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
1799
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
1800 1801 1802 1803 1804 1805 1806 1807 1808 1809 1810 1811 1812
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
1813
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
1814 1815 1816 1817 1818 1819 1820 1821 1822 1823 1824 1825 1826
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
1827
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
1828 1829 1830 1831 1832 1833 1834 1835 1836 1837 1838 1839 1840
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
1841
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
1842 1843 1844 1845 1846 1847 1848 1849 1850 1851 1852 1853 1854
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
1855
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
1856 1857 1858 1859 1860 1861 1862 1863 1864 1865 1866 1867 1868
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
1869
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
1870 1871 1872 1873 1874 1875 1876 1877 1878 1879 1880 1881 1882
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
1883
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
1884 1885 1886 1887 1888 1889 1890 1891 1892 1893 1894 1895 1896
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
1897
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
1898 1899 1900 1901 1902 1903 1904 1905 1906 1907 1908 1909 1910
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	.
1911
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
1912 1913 1914 1915 1916 1917 1918 1919 1920 1921 1922 1923 1924
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
1925
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
1926 1927 1928 1929 1930 1931 1932 1933 1934 1935 1936 1937 1938
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
1939
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
1940 1941 1942 1943 1944 1945 1946 1947 1948 1949 1950 1951 1952
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
1953
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
1954 1955 1956 1957 1958 1959 1960 1961 1962 1963 1964 1965 1966
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
1967
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
1968 1969 1970 1971 1972 1973 1974 1975 1976 1977 1978 1979 1980
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
1981
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
1982 1983 1984 1985 1986 1987 1988 1989 1990 1991 1992 1993 1994
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_NATIVE_AIO
SESSION_VALUE	NULL
GLOBAL_VALUE	ON
1995
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008
DEFAULT_VALUE	ON
VARIABLE_SCOPE	GLOBAL
VARIABLE_TYPE	BOOLEAN
VARIABLE_COMMENT	Use native AIO if supported on this platform.
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
2009
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022
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
2023
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
2024 2025 2026 2027 2028 2029 2030 2031 2032 2033 2034 2035 2036
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
GLOBAL_VALUE	5.6.17
2037
GLOBAL_VALUE_ORIGIN	COMPILE-TIME
2038 2039 2040 2041 2042 2043 2044 2045 2046 2047 2048 2049 2050
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
2051
GLOBAL_VALUE_ORIGIN	CONFIG
2052 2053 2054 2055 2056 2057 2058 2059 2060 2061
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