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Variable Value Description
Aborted clients Documentation 35.2 k 35239 The number of connections that were aborted because the client died without closing the connection properly.
Aborted connects Documentation 96.7 k 96658 The number of failed attempts to connect to the MySQL server.
Aborted connects preauth Documentation 34.3 k 34267
Access denied errors Documentation 170.9 k 170916
Acl column grants Documentation 0 0
Acl database grants Documentation 882 882
Acl function grants Documentation 0 0
Acl procedure grants Documentation 0 0
Acl package spec grants Documentation 0 0
Acl package body grants Documentation 0 0
Acl proxy users Documentation 3 3
Acl role grants Documentation 0 0
Acl roles Documentation 0 0
Acl table grants Documentation 1 1
Acl users Documentation 857 857
Aria pagecache blocks not flushed Documentation 0 0
Aria pagecache blocks unused Documentation 15.6 k 15647
Aria pagecache blocks used Documentation 6.2 k 6207
Aria pagecache read requests Documentation 1.8 G 1790939719
Aria pagecache reads Documentation 211.5 k 211487
Aria pagecache write requests Documentation 34.9 M 34851481
Aria pagecache writes Documentation 34 k 33956
Aria transaction log syncs Documentation 68.9 k 68918
Binlog commits Documentation 0 0
Binlog group commits Documentation 0 0
Binlog group commit trigger count Documentation 0 0
Binlog group commit trigger lock wait Documentation 0 0
Binlog group commit trigger timeout Documentation 0 0
Binlog snapshot file Documentation
Binlog snapshot position Documentation 0 0
Binlog bytes written Documentation 0 0
Binlog cache disk use Documentation 0 0 The number of transactions that used the temporary binary log cache but that exceeded the value of binlog_cache_size and used a temporary file to store statements from the transaction.
Binlog cache use Documentation 0 0 The number of transactions that used the temporary binary log cache.
Binlog stmt cache disk use Documentation 0 0
Binlog stmt cache use Documentation 0 0
Busy time Documentation 0 0.000000
Bytes received Documentation 91.1 G 91112482564
Bytes sent Documentation 253.7 G 253661564206
Column compressions Documentation 0 0
Column decompressions Documentation 0 0
Com admin commands Documentation 138.4 k 138391
Com alter db Documentation 0 0
Com alter db upgrade Documentation 0 0
Com alter event Documentation 0 0
Com alter function Documentation 0 0
Com alter procedure Documentation 0 0
Com alter server Documentation 0 0
Com alter sequence Documentation 0 0
Com alter table Documentation 42.2 M 42155892
Com alter user Documentation 33 33
Com analyze Documentation 0 0
Com assign to keycache Documentation 0 0
Com backup Documentation 0 0
Com backup lock Documentation 0 0
Com begin Documentation 880.4 k 880396
Com binlog Documentation 0 0
Com call procedure Documentation 293 293
Com change db Documentation 90.9 k 90906
Com change master Documentation 0 0
Com check Documentation 1 1
Com checksum Documentation 0 0
Com commit Documentation 773.6 k 773583
Com compound sql Documentation 0 0
Com create db Documentation 160 160
Com create event Documentation 0 0
Com create function Documentation 0 0
Com create index Documentation 219 219
Com create package Documentation 0 0
Com create package body Documentation 0 0
Com create procedure Documentation 0 0
Com create role Documentation 0 0
Com create sequence Documentation 0 0
Com create server Documentation 0 0
Com create table Documentation 80.9 M 80874628
Com create temporary table Documentation 1.1 k 1102
Com create trigger Documentation 0 0
Com create udf Documentation 0 0
Com create user Documentation 137 137
Com create view Documentation 2 2
Com delete Documentation 405.5 k 405505
Com delete multi Documentation 81 81
Com do Documentation 0 0
Com drop db Documentation 19 19
Com drop event Documentation 0 0
Com drop function Documentation 0 0
Com drop index Documentation 11 11
Com drop procedure Documentation 0 0
Com drop package Documentation 0 0
Com drop package body Documentation 0 0
Com drop role Documentation 0 0
Com drop server Documentation 0 0
Com drop sequence Documentation 0 0
Com drop table Documentation 695 695
Com drop temporary table Documentation 1.1 k 1078
Com drop trigger Documentation 0 0
Com drop user Documentation 123 123
Com drop view Documentation 0 0
Com empty query Documentation 7 7
Com enable governor Documentation 0 0
Com enable governor reconn Documentation 0 0
Com enable governor lve Documentation 5.1 k 5143
Com enable governor reconn lve Documentation 8 8
Com execute immediate Documentation 0 0
Com flush Documentation 1.4 k 1399
Com get diagnostics Documentation 0 0
Com grant Documentation 537 537
Com grant role Documentation 0 0
Com ha close Documentation 0 0
Com ha open Documentation 0 0
Com ha read Documentation 0 0
Com help Documentation 0 0
Com insert Documentation 246.5 M 246527609
Com insert select Documentation 6.5 k 6504
Com install plugin Documentation 0 0
Com kill Documentation 0 0
Com load Documentation 0 0
Com lock tables Documentation 58 58
Com optimize Documentation 0 0
Com preload keys Documentation 0 0
Com purge Documentation 0 0
Com purge before date Documentation 0 0
Com release savepoint Documentation 14 14
Com rename table Documentation 0 0
Com rename user Documentation 0 0
Com repair Documentation 0 0
Com replace Documentation 1.6 k 1555
Com replace select Documentation 0 0
Com reset Documentation 0 0
Com resignal Documentation 0 0
Com revoke Documentation 2 2
Com revoke all Documentation 0 0
Com revoke role Documentation 0 0
Com rollback Documentation 112.8 k 112766
Com rollback to savepoint Documentation 236 236
Com savepoint Documentation 29 29
Com select Documentation 58.9 M 58905644
Com set option Documentation 4.7 M 4672479
Com show authors Documentation 0 0
Com show binlog events Documentation 0 0
Com show binlogs Documentation 401 401
Com show charsets Documentation 96 96
Com show collations Documentation 0 0
Com show contributors Documentation 0 0
Com show create db Documentation 0 0
Com show create event Documentation 0 0
Com show create func Documentation 0 0
Com show create package Documentation 0 0
Com show create package body Documentation 0 0
Com show create proc Documentation 0 0
Com show create table Documentation 30.8 k 30844
Com show create trigger Documentation 0 0
Com show create user Documentation 0 0
Com show databases Documentation 9 k 8950
Com show engine logs Documentation 0 0
Com show engine mutex Documentation 0 0
Com show engine status Documentation 11 11
Com show errors Documentation 0 0
Com show events Documentation 362 362
Com show explain Documentation 0 0
Com show analyze Documentation 0 0
Com show fields Documentation 3.9 M 3943517
Com show function status Documentation 405 405
Com show generic Documentation 0 0
Com show grants Documentation 7.6 k 7611
Com show keys Documentation 364.4 k 364449
Com show binlog status Documentation 332 332
Com show open tables Documentation 9 9
Com show package status Documentation 10 10
Com show package body status Documentation 10 10
Com show plugins Documentation 0 0
Com show privileges Documentation 0 0
Com show procedure status Documentation 405 405
Com show processlist Documentation 60.3 k 60342
Com show profile Documentation 0 0
Com show profiles Documentation 0 0
Com show relaylog events Documentation 0 0
Com show slave hosts Documentation 0 0
Com show slave status Documentation 332 332
Com show status Documentation 123 123
Com show storage engines Documentation 1 k 1035
Com show table status Documentation 2.8 k 2817
Com show tables Documentation 759.1 k 759133
Com show triggers Documentation 574 574
Com show variables Documentation 12.4 k 12387
Com show warnings Documentation 3.2 k 3208
Com shutdown Documentation 0 0
Com signal Documentation 0 0
Com start all slaves Documentation 0 0
Com start slave Documentation 0 0
Com stmt close Documentation 68.6 M 68603435
Com stmt execute Documentation 311.7 M 311673079
Com stmt fetch Documentation 0 0
Com stmt prepare Documentation 68.7 M 68749266
Com stmt reprepare Documentation 125 125
Com stmt reset Documentation 0 0
Com stmt send long data Documentation 0 0
Com stop all slaves Documentation 0 0
Com stop slave Documentation 0 0
Com truncate Documentation 30 30
Com uninstall plugin Documentation 0 0
Com unlock tables Documentation 72 72
Com update Documentation 10.6 M 10582196
Com update multi Documentation 8.5 k 8497
Com xa commit Documentation 0 0
Com xa end Documentation 0 0
Com xa prepare Documentation 0 0
Com xa recover Documentation 0 0
Com xa rollback Documentation 0 0
Com xa start Documentation 0 0
Compression Documentation OFF OFF
Connection errors accept Documentation 0 0
Connection errors internal Documentation 0 0
Connection errors max connections Documentation 0 0
Connection errors peer address Documentation 0 0
Connection errors select Documentation 0 0
Connection errors tcpwrap Documentation 0 0
Connections Documentation 6 M 5994337 The number of connection attempts (successful or not) to the MySQL server.
Cpu time Documentation 0 0.000000
Created tmp disk tables Documentation 8.6 M 8612007 The number of temporary tables on disk created automatically by the server while executing statements. If Created_tmp_disk_tables is big, you may want to increase the tmp_table_size value to cause temporary tables to be memory-based instead of disk-based.
Created tmp files Documentation 4.6 k 4589 How many temporary files mysqld has created.
Created tmp tables Documentation 15.3 M 15260563 The number of in-memory temporary tables created automatically by the server while executing statements.
Delayed errors Documentation 0 0 The number of rows written with INSERT DELAYED for which some error occurred (probably duplicate key).
Delayed insert threads Documentation 0 0 The number of INSERT DELAYED handler threads in use. Every different table on which one uses INSERT DELAYED gets its own thread.
Delayed writes Documentation 0 0 The number of INSERT DELAYED rows written.
Delete scan Documentation 125.6 k 125601
Empty queries Documentation 16.9 M 16881563
Enable governor Documentation 2 2
Executed events Documentation 0 0
Executed triggers Documentation 0 0
Feature application time periods Documentation 0 0
Feature check constraint Documentation 34.9 k 34852
Feature custom aggregate functions Documentation 0 0
Feature delay key write Documentation 0 0
Feature dynamic columns Documentation 0 0
Feature fulltext Documentation 0 0
Feature gis Documentation 0 0
Feature insert returning Documentation 0 0
Feature invisible columns Documentation 0 0
Feature json Documentation 5 M 4994711
Feature locale Documentation 30.5 k 30538
Feature subquery Documentation 14.2 M 14150107
Feature system versioning Documentation 0 0
Feature timezone Documentation 3.5 M 3521105
Feature trigger Documentation 2 k 2042
Feature window functions Documentation 26 26
Feature xml Documentation 0 0
Handler commit Documentation 314.2 M 314209226 The number of internal COMMIT statements.
Handler delete Documentation 772.5 k 772481 The number of times a row was deleted from a table.
Handler discover Documentation 24 24 The MySQL server can ask the NDB Cluster storage engine if it knows about a table with a given name. This is called discovery. Handler_discover indicates the number of time tables have been discovered.
Handler external lock Documentation 0 0
Handler icp attempts Documentation 1 G 1048286332
Handler icp match Documentation 992.9 M 992877652
Handler mrr init Documentation 0 0
Handler mrr key refills Documentation 0 0
Handler mrr rowid refills Documentation 0 0
Handler prepare Documentation 0 0
Handler read first Documentation 4.4 M 4413494 The number of times the first entry was read from an index. If this is high, it suggests that the server is doing a lot of full index scans; for example, SELECT col1 FROM foo, assuming that col1 is indexed.
Handler read key Documentation 1.6 G 1591364869 The number of requests to read a row based on a key. If this is high, it is a good indication that your queries and tables are properly indexed.
Handler read last Documentation 354.9 k 354922
Handler read next Documentation 8.4 G 8383795625 The number of requests to read the next row in key order. This is incremented if you are querying an index column with a range constraint or if you are doing an index scan.
Handler read prev Documentation 249 M 249000873 The number of requests to read the previous row in key order. This read method is mainly used to optimize ORDER BY … DESC.
Handler read retry Documentation 0 0
Handler read rnd Documentation 877.3 M 877306604 The number of requests to read a row based on a fixed position. This is high if you are doing a lot of queries that require sorting of the result. You probably have a lot of queries that require MySQL to scan whole tables or you have joins that don't use keys properly.
Handler read rnd deleted Documentation 10.7 k 10694
Handler read rnd next Documentation 24.1 G 24104630061 The number of requests to read the next row in the data file. This is high if you are doing a lot of table scans. Generally this suggests that your tables are not properly indexed or that your queries are not written to take advantage of the indexes you have.
Handler rollback Documentation 121.5 k 121481 The number of internal ROLLBACK statements.
Handler savepoint Documentation 29 29
Handler savepoint rollback Documentation 236 236
Handler tmp delete Documentation 0 0
Handler tmp update Documentation 1.4 G 1365707187
Handler tmp write Documentation 1.1 G 1068772602
Handler update Documentation 13.5 M 13482733 The number of requests to update a row in a table.
Handler write Documentation 273.4 M 273414385 The number of requests to insert a row in a table.
Innodb adaptive hash hash searches Documentation 0 0
Innodb adaptive hash non hash searches Documentation 0 0
Innodb background log sync Documentation 308.6 k 308622
Innodb buffer pool dump status Documentation
Innodb buffer pool load status Documentation Buffer pool(s) load completed at 261012 15:54:54 Buffer pool(s) load completed at 261012 15:54:54
Innodb buffer pool resize status Documentation
Innodb buffer pool load incomplete Documentation OFF OFF
Innodb buffer pool pages data Documentation 7.2 k 7242 The number of pages containing data (dirty or clean).
Innodb buffer pool bytes data Documentation 118.7 M 118652928
Innodb buffer pool pages dirty Documentation 1.4 k 1350 The number of pages currently dirty.
Innodb buffer pool bytes dirty Documentation 22.1 M 22118400
Innodb buffer pool pages flushed Documentation 4.1 M 4140878 The number of buffer pool pages that have been requested to be flushed.
Innodb buffer pool pages free Documentation 870 870 The number of free pages.
Innodb buffer pool pages made not young Documentation 1.9 G 1890087746
Innodb buffer pool pages made young Documentation 23.3 M 23330381
Innodb buffer pool pages misc Documentation 0 0 The number of pages busy because they have been allocated for administrative overhead such as row locks or the adaptive hash index. This value can also be calculated as Innodb_buffer_pool_pages_total - Innodb_buffer_pool_pages_free - Innodb_buffer_pool_pages_data.
Innodb buffer pool pages old Documentation 2.7 k 2657
Innodb buffer pool pages total Documentation 8.1 k 8112 Total size of buffer pool, in pages.
Innodb buffer pool pages lru flushed Documentation 2.6 M 2563207
Innodb buffer pool pages lru freed Documentation 55.5 M 55481327
Innodb buffer pool pages split Documentation 223.3 k 223300
Innodb buffer pool read ahead rnd Documentation 0 0 The number of "random" read-aheads InnoDB initiated. This happens when a query is to scan a large portion of a table but in random order.
Innodb buffer pool read ahead Documentation 7.5 M 7466903
Innodb buffer pool read ahead evicted Documentation 0 0
Innodb buffer pool read requests Documentation 9.2 G 9212981928 The number of logical read requests InnoDB has done.
Innodb buffer pool reads Documentation 55.1 M 55093123 The number of logical reads that InnoDB could not satisfy from buffer pool and had to do a single-page read.
Innodb buffer pool wait free Documentation 0 0 Normally, writes to the InnoDB buffer pool happen in the background. However, if it's necessary to read or create a page and no clean pages are available, it's necessary to wait for pages to be flushed first. This counter counts instances of these waits. If the buffer pool size was set properly, this value should be small.
Innodb buffer pool write requests Documentation 233.8 M 233756423 The number writes done to the InnoDB buffer pool.
Innodb checkpoint age Documentation 15.2 M 15224030
Innodb checkpoint max age Documentation 80.8 M 80819529
Innodb data fsyncs Documentation 13.7 M 13717061 The number of fsync() operations so far.
Innodb data pending fsyncs Documentation 0 0 The current number of pending fsync() operations.
Innodb data pending reads Documentation 0 0 The current number of pending reads.
Innodb data pending writes Documentation 0 0 The current number of pending writes.
Innodb data read Documentation 902.6 G 902641090560 The amount of data read so far, in bytes.
Innodb data reads Documentation 55.2 M 55210200 The total number of data reads.
Innodb data writes Documentation 4.3 M 4320309 The total number of data writes.
Innodb data written Documentation 129 G 129032110080 The amount of data written so far, in bytes.
Innodb dblwr pages written Documentation 3.7 M 3734619 The number of pages that have been written for doublewrite operations.
Innodb dblwr writes Documentation 87.8 k 87825 The number of doublewrite operations that have been performed.
Innodb deadlocks Documentation 46 46
Innodb history list length Documentation 1 1
Innodb ibuf discarded delete marks Documentation 0 0
Innodb ibuf discarded deletes Documentation 0 0
Innodb ibuf discarded inserts Documentation 0 0
Innodb ibuf free list Documentation 0 0
Innodb ibuf merged delete marks Documentation 0 0
Innodb ibuf merged deletes Documentation 0 0
Innodb ibuf merged inserts Documentation 0 0
Innodb ibuf merges Documentation 0 0
Innodb ibuf segment size Documentation 1.1 T 1103806595074
Innodb ibuf size Documentation 8.7 T 8710193676289
Innodb log waits Documentation 0 0 The number of waits we had because log buffer was too small and we had to wait for it to be flushed before continuing.
Innodb log write requests Documentation 171.4 M 171408934 The number of log write requests.
Innodb log writes Documentation 9.7 M 9721895 The number of physical writes to the log file.
Innodb lsn current Documentation 596.3 G 596293494651
Innodb lsn flushed Documentation 596.3 G 596293494651
Innodb lsn last checkpoint Documentation 596.3 G 596278270621
Innodb master thread active loops Documentation 68.4 k 68362
Innodb master thread idle loops Documentation 240.3 k 240262
Innodb max trx id Documentation 2.4 G 2366455392
Innodb mem adaptive hash Documentation 0 0
Innodb mem dictionary Documentation 10.2 M 10233432
Innodb os log written Documentation 45.8 G 45812278858 The number of bytes written to the log file.
Innodb page size Documentation 16.4 k 16384 The compiled-in InnoDB page size (default 16KB). Many values are counted in pages; the page size allows them to be easily converted to bytes.
Innodb pages created Documentation 3.3 M 3303317 The number of pages created.
Innodb pages read Documentation 55.1 M 55093123 The number of pages read.
Innodb pages written Documentation 4.1 M 4140878 The number of pages written.
Innodb row lock current waits Documentation 0 0 The number of row locks currently being waited for.
Innodb row lock time Documentation 1.3 M 1254121 The total time spent in acquiring row locks, in milliseconds.
Innodb row lock time avg Documentation 788 788 The average time to acquire a row lock, in milliseconds.
Innodb row lock time max Documentation 50 k 50000 The maximum time to acquire a row lock, in milliseconds.
Innodb row lock waits Documentation 1.6 k 1591 The number of times a row lock had to be waited for.
Innodb num open files Documentation 300 300
Innodb truncated status writes Documentation 0 0
Innodb available undo logs Documentation 128 128
Innodb undo truncations Documentation 0 0
Innodb page compression saved Documentation 0 0
Innodb num pages page compressed Documentation 0 0
Innodb num page compressed trim op Documentation 0 0
Innodb num pages page decompressed Documentation 0 0
Innodb num pages page compression error Documentation 0 0
Innodb num pages encrypted Documentation 0 0
Innodb num pages decrypted Documentation 0 0
Innodb have lz4 Documentation OFF OFF
Innodb have lzo Documentation OFF OFF
Innodb have lzma Documentation OFF OFF
Innodb have bzip2 Documentation OFF OFF
Innodb have snappy Documentation OFF OFF
Innodb have punch hole Documentation ON ON
Innodb defragment compression failures Documentation 0 0
Innodb defragment failures Documentation 0 0
Innodb defragment count Documentation 0 0
Innodb instant alter column Documentation 637 637
Innodb onlineddl rowlog rows Documentation 0 0
Innodb onlineddl rowlog pct used Documentation 0 0
Innodb onlineddl pct progress Documentation 0 0
Innodb encryption rotation pages read from cache Documentation 0 0
Innodb encryption rotation pages read from disk Documentation 0 0
Innodb encryption rotation pages modified Documentation 0 0
Innodb encryption rotation pages flushed Documentation 0 0
Innodb encryption rotation estimated iops Documentation 0 0
Innodb encryption n merge blocks encrypted Documentation 0 0
Innodb encryption n merge blocks decrypted Documentation 0 0
Innodb encryption n rowlog blocks encrypted Documentation 0 0
Innodb encryption n rowlog blocks decrypted Documentation 0 0
Innodb encryption n temp blocks encrypted Documentation 0 0
Innodb encryption n temp blocks decrypted Documentation 0 0
Innodb encryption num key requests Documentation 0 0
Innodb bulk operations Documentation 165 165
Key blocks not flushed Documentation 0 0 The number of key blocks in the key cache that have changed but haven't yet been flushed to disk. It used to be known as Not_flushed_key_blocks.
Key blocks unused Documentation 107.2 k 107162 The number of unused blocks in the key cache. You can use this value to determine how much of the key cache is in use.
Key blocks used Documentation 934 934 The number of used blocks in the key cache. This value is a high-water mark that indicates the maximum number of blocks that have ever been in use at one time.
Key blocks warm Documentation 0 0
Key read requests Documentation 356.9 k 356928 The number of requests to read a key block from the cache.
Key reads Documentation 38.1 k 38105 The number of physical reads of a key block from disk. If Key_reads is big, then your key_buffer_size value is probably too small. The cache miss rate can be calculated as Key_reads/Key_read_requests.
Key write requests Documentation 32.7 k 32711 The number of requests to write a key block to the cache.
Key writes Documentation 32.2 k 32242 The number of physical writes of a key block to disk.
Last query cost Documentation 0 0.000000 The total cost of the last compiled query as computed by the query optimizer. Useful for comparing the cost of different query plans for the same query. The default value of 0 means that no query has been compiled yet.
Master gtid wait count Documentation 0 0
Master gtid wait time Documentation 0 0
Master gtid wait timeouts Documentation 0 0
Max memory used Documentation NULL NULL
Max statement time exceeded Documentation 0 0
Max used connections Documentation 890 890 The maximum number of connections that have been in use simultaneously since the server started.
Memory used Documentation 575.8 M 575835416
Memory used initial Documentation 448.1 M 448051096
Not flushed delayed rows Documentation 0 0 The number of rows waiting to be written in INSERT DELAYED queues.
Open files Documentation 15 15 The number of files that are open.
Open streams Documentation 4 4 The number of streams that are open (used mainly for logging).
Open table definitions Documentation 400 400
Open tables Documentation 200 200 The number of tables that are open.
Opened files Documentation 83.8 M 83815257
Opened plugin libraries Documentation 0 0
Opened table definitions Documentation 2.5 M 2536878
Opened tables Documentation 3.3 M 3326272 The number of tables that have been opened. If opened tables is big, your table_open_cache value is probably too small.
Opened views Documentation 37.2 k 37197
Optimizer join prefixes check calls Documentation 48.1 M 48131927
Performance schema accounts lost Documentation 0 0
Performance schema cond classes lost Documentation 0 0
Performance schema cond instances lost Documentation 0 0
Performance schema digest lost Documentation 0 0
Performance schema file classes lost Documentation 0 0
Performance schema file handles lost Documentation 0 0
Performance schema file instances lost Documentation 0 0
Performance schema hosts lost Documentation 0 0
Performance schema index stat lost Documentation 0 0
Performance schema locker lost Documentation 0 0
Performance schema memory classes lost Documentation 0 0
Performance schema metadata lock lost Documentation 0 0
Performance schema mutex classes lost Documentation 0 0
Performance schema mutex instances lost Documentation 0 0
Performance schema nested statement lost Documentation 0 0
Performance schema prepared statements lost Documentation 0 0
Performance schema program lost Documentation 0 0
Performance schema rwlock classes lost Documentation 0 0
Performance schema rwlock instances lost Documentation 0 0
Performance schema session connect attrs lost Documentation 0 0
Performance schema socket classes lost Documentation 0 0
Performance schema socket instances lost Documentation 0 0
Performance schema stage classes lost Documentation 0 0
Performance schema statement classes lost Documentation 0 0
Performance schema table handles lost Documentation 0 0
Performance schema table instances lost Documentation 0 0
Performance schema table lock stat lost Documentation 0 0
Performance schema thread classes lost Documentation 0 0
Performance schema thread instances lost Documentation 0 0
Performance schema users lost Documentation 0 0
Prepared stmt count Documentation 10 10
Qcache free blocks Documentation 1 1 The number of free memory blocks in query cache. High numbers can indicate fragmentation issues, which may be solved by issuing a FLUSH QUERY CACHE statement.
Qcache free memory Documentation 1 M 1031272 The amount of free memory for query cache.
Qcache hits Documentation 0 0 The number of cache hits.
Qcache inserts Documentation 0 0 The number of queries added to the cache.
Qcache lowmem prunes Documentation 0 0 The number of queries that have been removed from the cache to free up memory for caching new queries. This information can help you tune the query cache size. The query cache uses a least recently used (LRU) strategy to decide which queries to remove from the cache.
Qcache not cached Documentation 0 0 The number of non-cached queries (not cachable, or not cached due to the query_cache_type setting).
Qcache queries in cache Documentation 0 0 The number of queries registered in the cache.
Qcache total blocks Documentation 1 1 The total number of blocks in the query cache.
Queries Documentation 594.4 M 594425494
Query time Documentation 376.4 k 376409.204728
Questions Documentation 457.1 M 457067355
Resultset metadata skipped Documentation 1.4 k 1382
Rows read Documentation 28.5 G 28483685596
Rows sent Documentation 699 M 698955750
Rows tmp read Documentation 5.2 G 5163895892
Rpl semi sync master clients Documentation 0 0
Rpl semi sync master get ack Documentation 0 0
Rpl semi sync master net avg wait time Documentation 0 0
Rpl semi sync master net wait time Documentation 0 0
Rpl semi sync master net waits Documentation 0 0
Rpl semi sync master no times Documentation 0 0
Rpl semi sync master no tx Documentation 0 0
Rpl semi sync master request ack Documentation 0 0
Rpl semi sync master status Documentation OFF OFF
Rpl semi sync master timefunc failures Documentation 0 0
Rpl semi sync master tx avg wait time Documentation 0 0
Rpl semi sync master tx wait time Documentation 0 0
Rpl semi sync master tx waits Documentation 0 0
Rpl semi sync master wait pos backtraverse Documentation 0 0
Rpl semi sync master wait sessions Documentation 0 0
Rpl semi sync master yes tx Documentation 0 0
Rpl semi sync slave send ack Documentation 0 0
Rpl semi sync slave status Documentation OFF OFF
Rpl status Documentation AUTH_MASTER AUTH_MASTER The status of failsafe replication (not yet implemented).
Rpl transactions multi engine Documentation 0 0
Select full join Documentation 221.7 k 221720 The number of joins that do not use indexes. If this value is not 0, you should carefully check the indexes of your tables.
Select full range join Documentation 10.8 k 10764 The number of joins that used a range search on a reference table.
Select range Documentation 1.3 M 1253327 The number of joins that used ranges on the first table. (It's normally not critical even if this is big.)
Select range check Documentation 37 37 The number of joins without keys that check for key usage after each row. (If this is not 0, you should carefully check the indexes of your tables.)
Select scan Documentation 19.7 M 19743142 The number of joins that did a full scan of the first table.
Slave connections Documentation 0 0
Slave heartbeat period Documentation 0 0.000
Slave open temp tables Documentation 0 0 The number of temporary tables currently open by the replica SQL thread.
Slave received heartbeats Documentation 0 0
Slave retried transactions Documentation 0 0 Total (since startup) number of times the replication replica SQL thread has retried transactions.
Slave running Documentation OFF OFF This is ON if this server is a replica that is connected to a primary.
Slave skipped errors Documentation 0 0
Slaves connected Documentation 0 0
Slaves running Documentation 0 0
Slow launch threads Documentation 0 0 The number of threads that have taken more than slow_launch_time seconds to create.
Slow queries Documentation 30 30 The number of queries that have taken more than long_query_time seconds. Documentation
Sort merge passes Documentation 2.3 k 2273 The number of merge passes the sort algorithm has had to do. If this value is large, you should consider increasing the value of the sort_buffer_size system variable.
Sort priority queue sorts Documentation 1.6 M 1582749
Sort range Documentation 1.3 M 1279257 The number of sorts that were done with ranges.
Sort rows Documentation 1.1 G 1081910149 The number of sorted rows.
Sort scan Documentation 1.7 M 1668026 The number of sorts that were done by scanning the table.
Ssl accept renegotiates Documentation 0 0
Ssl accepts Documentation 0 0
Ssl callback cache hits Documentation 0 0
Ssl cipher Documentation
Ssl cipher list Documentation
Ssl client connects Documentation 0 0
Ssl connect renegotiates Documentation 0 0
Ssl ctx verify depth Documentation 0 0
Ssl ctx verify mode Documentation 0 0
Ssl default timeout Documentation 0 0
Ssl finished accepts Documentation 0 0
Ssl finished connects Documentation 0 0
Ssl server not after Documentation
Ssl server not before Documentation
Ssl session cache hits Documentation 0 0
Ssl session cache misses Documentation 0 0
Ssl session cache mode Documentation NONE NONE
Ssl session cache overflows Documentation 0 0
Ssl session cache size Documentation 0 0
Ssl session cache timeouts Documentation 0 0
Ssl sessions reused Documentation 0 0
Ssl used session cache entries Documentation 0 0
Ssl verify depth Documentation 0 0
Ssl verify mode Documentation 0 0
Ssl version Documentation
Stack usage Documentation 0 0
Subquery cache hit Documentation 40.3 M 40272128
Subquery cache miss Documentation 20.2 M 20242120
Syncs Documentation 213.7 M 213744972
Table locks immediate Documentation 3 M 2978562 The number of times that a table lock was acquired immediately.
Table locks waited Documentation 140 140 The number of times that a table lock could not be acquired immediately and a wait was needed. If this is high, and you have performance problems, you should first optimize your queries, and then either split your table or tables or use replication.
Table open cache active instances Documentation 1 1
Table open cache hits Documentation 459.6 M 459627403
Table open cache misses Documentation 3.4 M 3436416
Table open cache overflows Documentation 2.8 M 2791892
Tc log max pages used Documentation 0 0
Tc log page size Documentation 0 0
Tc log page waits Documentation 0 0
Threadpool idle threads Documentation 0 0
Threadpool threads Documentation 0 0
Threads cached Documentation 246 246 The number of threads in the thread cache. The cache hit rate can be calculated as Threads_created/Connections. If this value is red you should raise your thread_cache_size.
Threads connected Documentation 176 176 The number of currently open connections.
Threads created Documentation 1.7 k 1689 The number of threads created to handle connections. If Threads_created is big, you may want to increase the thread_cache_size value. (Normally this doesn't give a notable performance improvement if you have a good thread implementation.)
Threads running Documentation 2 2 The number of threads that are not sleeping.
Transactions gtid foreign engine Documentation 0 0
Transactions multi engine Documentation 0 0
Update scan Documentation 309.7 k 309703
Uptime Documentation 3 days, 13 hours, 47 minutes and 23 seconds 308843
Uptime since flush status Documentation 3 days, 13 hours, 47 minutes and 23 seconds 308843
wsrep Documentation 0 0
wsrep applier thread count Documentation 0 0
wsrep cluster capabilities Documentation
wsrep cluster conf id Documentation 18.4 E 18446744073709551615
wsrep cluster size Documentation 0 0
wsrep cluster state uuid Documentation
wsrep cluster status Documentation Disconnected Disconnected
wsrep connected Documentation OFF OFF
wsrep local bf aborts Documentation 0 0
wsrep local index Documentation 18.4 E 18446744073709551615
wsrep provider capabilities Documentation
wsrep provider name Documentation
wsrep provider vendor Documentation
wsrep provider version Documentation
wsrep ready Documentation OFF OFF
wsrep rollbacker thread count Documentation 0 0
wsrep thread count Documentation 0 0
Key buffer fraction % 18.24 % 18.241882324219 Percentage of used key cache (calculated value)
Key write ratio % 98.57 % 98.566231542906 Percentage of physical writes compared to write requests (calculated value)
Key read ratio % 10.68 % 10.675822574861 Key cache miss calculated as rate of physical reads compared to read requests (calculated value)
Threads cache hitrate % 99.97 % 99.971823405991 Thread cache hit rate (calculated value)