Supports transactions, row-level locking, foreign keys and encryption for tables
===================================== 2025-10-14 07:28:25 0x779876169640 INNODB MONITOR OUTPUT ===================================== Per second averages calculated from the last 2 seconds ----------------- BACKGROUND THREAD ----------------- srv_master_thread loops: 53056 srv_active, 0 srv_shutdown, 527884 srv_idle srv_master_thread log flush and writes: 580919 ---------- SEMAPHORES ---------- OS WAIT ARRAY INFO: reservation count 174392 OS WAIT ARRAY INFO: signal count 125397 RW-shared spins 100212, rounds 3005399, OS waits 100104 RW-excl spins 23, rounds 575, OS waits 18 RW-sx spins 1, rounds 30, OS waits 1 Spin rounds per wait: 29.99 RW-shared, 25.00 RW-excl, 30.00 RW-sx ------------ TRANSACTIONS ------------ Trx id counter 1077881 Purge done for trx's n:o < 1077881 undo n:o < 0 state: running History list length 5 LIST OF TRANSACTIONS FOR EACH SESSION: ---TRANSACTION 412971433247104, not started 0 lock struct(s), heap size 1128, 0 row lock(s) ---TRANSACTION 412971433242888, not started 0 lock struct(s), heap size 1128, 0 row lock(s) ---TRANSACTION 412971433238672, 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 52030 OS file reads, 654816 OS file writes, 484617 OS fsyncs 0.00 reads/s, 0 avg bytes/read, 3.50 writes/s, 3.00 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 0 buffer(s) Hash table size 4441, node heap has 0 buffer(s) Hash table size 4441, node heap has 0 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 0 buffer(s) Hash table size 4441, node heap has 0 buffer(s) Hash table size 4441, node heap has 1 buffer(s) 4.50 hash searches/s, 2.50 non-hash searches/s --- LOG --- Log sequence number 216285646 Log flushed up to 216285646 Pages flushed up to 216285646 Last checkpoint at 216285603 0 pending log flushes, 0 pending chkp writes 309816 log i/o's done, 1.50 log i/o's/second ---------------------- BUFFER POOL AND MEMORY ---------------------- Total large memory allocated 33554432 Dictionary memory allocated 75640 Buffer pool size 1003 Free buffers 744 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 0, not young 0 0.00 youngs/s, 0.00 non-youngs/s Pages read 51993, created 2819, written 283961 0.00 reads/s, 0.00 creates/s, 1.50 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[83]: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=1935, Main thread ID=131495322711616, state: sleeping Number of rows inserted 0, updated 55448, deleted 0, read 861165 0.00 inserts/s, 0.00 updates/s, 0.00 deletes/s, 4.50 reads/s Number of system rows inserted 0, updated 0, deleted 0, read 3706 0.00 inserts/s, 0.00 updates/s, 0.00 deletes/s, 0.00 reads/s ---------------------------- END OF INNODB MONITOR OUTPUT ============================