Console
Storage engines
InnoDB
Supports transactions, row-level locking, foreign keys and encryption for tables
[ Variables | Buffer Pool | InnoDB Status ]
===================================== 2026-04-21 17:47:13 0x420c INNODB MONITOR OUTPUT ===================================== Per second averages calculated from the last 63 seconds ----------------- BACKGROUND THREAD ----------------- srv_master_thread loops: 8785 srv_active, 0 srv_shutdown, 68847 srv_idle srv_master_thread log flush and writes: 77618 ---------- SEMAPHORES ---------- OS WAIT ARRAY INFO: reservation count 3325217 OS WAIT ARRAY INFO: signal count 3738423 RW-shared spins 7869085, rounds 123794854, OS waits 3313058 RW-excl spins 672241, rounds 736592, OS waits 435 RW-sx spins 1, rounds 30, OS waits 1 Spin rounds per wait: 15.73 RW-shared, 1.10 RW-excl, 30.00 RW-sx ------------ TRANSACTIONS ------------ Trx id counter 100639 Purge done for trx's n:o < 100639 undo n:o < 0 state: running History list length 2 LIST OF TRANSACTIONS FOR EACH SESSION: ---TRANSACTION 282970780205704, not started 0 lock struct(s), heap size 1128, 0 row lock(s) ---TRANSACTION 282970780201536, not started 0 lock struct(s), heap size 1128, 0 row lock(s) ---TRANSACTION 282970780197368, not started 0 lock struct(s), heap size 1128, 0 row lock(s) ---TRANSACTION 282970780193200, not started 0 lock struct(s), heap size 1128, 0 row lock(s) ---TRANSACTION 282970780189032, not started 0 lock struct(s), heap size 1128, 0 row lock(s) ---TRANSACTION 282970780184864, not started 0 lock struct(s), heap size 1128, 0 row lock(s) ---TRANSACTION 282970780180696, not started 0 lock struct(s), heap size 1128, 0 row lock(s) ---TRANSACTION 282970780176528, not started 0 lock struct(s), heap size 1128, 0 row lock(s) -------- FILE I/O -------- I/O thread 0 state: native aio handle (insert buffer thread) I/O thread 1 state: native aio handle (log thread) I/O thread 2 state: native aio handle (read thread) I/O thread 3 state: native aio handle (read thread) I/O thread 4 state: native aio handle (read thread) I/O thread 5 state: native aio handle (read thread) I/O thread 6 state: native aio handle (write thread) I/O thread 7 state: native aio handle (write thread) I/O thread 8 state: native aio handle (write thread) I/O thread 9 state: native aio handle (write thread) Pending normal aio reads: [0, 0, 0, 0] , aio writes: [0, 0, 0, 0] , ibuf aio reads:, log i/o's:, sync i/o's: Pending flushes (fsync) log: 0; buffer pool: 0 61897785 OS file reads, 127701 OS file writes, 77223 OS fsyncs 931.49 reads/s, 16384 avg bytes/read, 1.19 writes/s, 0.46 fsyncs/s ------------------------------------- INSERT BUFFER AND ADAPTIVE HASH INDEX ------------------------------------- Ibuf: size 1, free list len 0, seg size 2, 630 merges merged operations: insert 630, delete mark 3, delete 0 discarded operations: insert 0, delete mark 0, delete 0 Hash table size 4441, node heap has 1 buffer(s) Hash table size 4441, node heap has 1 buffer(s) Hash table size 4441, node heap has 6 buffer(s) Hash table size 4441, node heap has 2 buffer(s) Hash table size 4441, node heap has 0 buffer(s) Hash table size 4441, node heap has 19 buffer(s) Hash table size 4441, node heap has 1 buffer(s) Hash table size 4441, node heap has 1 buffer(s) 15253.74 hash searches/s, 5741.39 non-hash searches/s --- LOG --- Log sequence number 81964286 Log flushed up to 81964266 Pages flushed up to 81961922 Last checkpoint at 81961913 0 pending log flushes, 0 pending chkp writes 38706 log i/o's done, 0.30 log i/o's/second ---------------------- BUFFER POOL AND MEMORY ---------------------- Total large memory allocated 33554432 Dictionary memory allocated 97656 Buffer pool size 1003 Free buffers 0 Database pages 972 Old database pages 359 Modified db pages 5 Percent of dirty pages(LRU & free pages): 0.514 Max dirty pages percent: 75.000 Pending reads 0 Pending writes: LRU 0, flush list 0, single page 0 Pages made young 9823556, not young 2384436860 8.78 youngs/s, 12544.74 non-youngs/s Pages read 61897740, created 842, written 74326 931.49 reads/s, 0.03 creates/s, 0.83 writes/s Buffer pool hit rate 985 / 1000, young-making rate 0 / 1000 not 190 / 1000 Pages read ahead 218.17/s, evicted without access 32.32/s, Random read ahead 0.00/s LRU len: 972, unzip_LRU len: 0 I/O sum[34647]:cur[22], unzip sum[0]:cur[0] -------------- ROW OPERATIONS -------------- 0 queries inside InnoDB, 0 queries in queue 0 read views open inside InnoDB Process ID=4240, Main thread ID=5824, state: sleeping Number of rows inserted 2743, updated 11141, deleted 3, read 1589730390 0.00 inserts/s, 0.16 updates/s, 0.00 deletes/s, 32260.88 reads/s Number of system rows inserted 0, updated 0, deleted 0, read 13968 0.00 inserts/s, 0.00 updates/s, 0.00 deletes/s, 0.00 reads/s ---------------------------- END OF INNODB MONITOR OUTPUT ============================