Supports transactions, row-level locking, foreign keys and encryption for tables
===================================== 2025-07-01 19:34:29 0x7a7afabb46c0 INNODB MONITOR OUTPUT ===================================== Per second averages calculated from the last 36 seconds ----------------- BACKGROUND THREAD ----------------- srv_master_thread loops: 45592 srv_active, 0 srv_shutdown, 251985 srv_idle srv_master_thread log flush and writes: 297570 ---------- SEMAPHORES ---------- OS WAIT ARRAY INFO: reservation count 80683 OS WAIT ARRAY INFO: signal count 52135 RW-shared spins 33044, rounds 987717, OS waits 32895 RW-excl spins 1967, rounds 19745, OS waits 397 RW-sx spins 4, rounds 108, OS waits 3 Spin rounds per wait: 29.89 RW-shared, 10.04 RW-excl, 27.00 RW-sx ------------ TRANSACTIONS ------------ Trx id counter 2955706 Purge done for trx's n:o < 2947535 undo n:o < 0 state: running but idle History list length 0 LIST OF TRANSACTIONS FOR EACH SESSION: ---TRANSACTION 416143333699864, not started 0 lock struct(s), heap size 1128, 0 row lock(s) ---TRANSACTION 416143333695640, not started 0 lock struct(s), heap size 1128, 0 row lock(s) -------- FILE I/O -------- I/O thread 0 state: waiting for i/o request (insert buffer thread) I/O thread 1 state: waiting for i/o request (log thread) I/O thread 2 state: waiting for i/o request (read thread) I/O thread 3 state: waiting for i/o request (read thread) I/O thread 4 state: waiting for i/o request (read thread) I/O thread 5 state: waiting for i/o request (read thread) I/O thread 6 state: waiting for i/o request (write thread) I/O thread 7 state: waiting for i/o request (write thread) I/O thread 8 state: waiting for i/o request (write thread) I/O thread 9 state: waiting for i/o request (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 202015 OS file reads, 463198 OS file writes, 306330 OS fsyncs 0.00 reads/s, 0 avg bytes/read, 0.00 writes/s, 0.00 fsyncs/s ------------------------------------- INSERT BUFFER AND ADAPTIVE HASH INDEX ------------------------------------- Ibuf: size 1, free list len 0, seg size 2, 0 merges merged operations: insert 0, delete mark 0, 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 1 buffer(s) 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 1 buffer(s) Hash table size 4441, node heap has 1 buffer(s) Hash table size 4441, node heap has 3 buffer(s) 0.06 hash searches/s, 0.00 non-hash searches/s --- LOG --- Log sequence number 94994072 Log flushed up to 94994072 Pages flushed up to 94994072 Last checkpoint at 94994063 0 pending log flushes, 0 pending chkp writes 159801 log i/o's done, 0.00 log i/o's/second ---------------------- BUFFER POOL AND MEMORY ---------------------- Total large memory allocated 33554432 Dictionary memory allocated 1363960 Buffer pool size 1003 Free buffers 737 Database pages 256 Old database pages 0 Modified db pages 0 Percent of dirty pages(LRU & free pages): 0.000 Max dirty pages percent: 75.000 Pending reads 0 Pending writes: LRU 0, flush list 0, single page 0 Pages made young 491, not young 26368 0.00 youngs/s, 0.00 non-youngs/s Pages read 201453, created 2491, written 254052 0.00 reads/s, 0.00 creates/s, 0.00 writes/s Buffer pool hit rate 1000 / 1000, young-making rate 0 / 1000 not 0 / 1000 Pages read ahead 0.00/s, evicted without access 0.00/s, Random read ahead 0.00/s LRU len: 256, unzip_LRU len: 0 I/O sum[0]:cur[0], unzip sum[0]:cur[0] -------------- ROW OPERATIONS -------------- 0 queries inside InnoDB, 0 queries in queue 0 read views open inside InnoDB Process ID=1231, Main thread ID=134667214776000, state: sleeping Number of rows inserted 749, updated 49085, deleted 721, read 3694528 0.00 inserts/s, 0.00 updates/s, 0.00 deletes/s, 0.06 reads/s Number of system rows inserted 0, updated 0, deleted 0, read 600366 0.00 inserts/s, 0.00 updates/s, 0.00 deletes/s, 0.00 reads/s ---------------------------- END OF INNODB MONITOR OUTPUT ============================