Supports transactions, row-level locking, and foreign keys
[ Variables | Buffer Pool | InnoDB Status ]
===================================== 2025-10-21 05:09:31 0x7f8df01a4700 INNODB MONITOR OUTPUT ===================================== Per second averages calculated from the last 35 seconds ----------------- BACKGROUND THREAD ----------------- srv_master_thread loops: 40 srv_active, 0 srv_shutdown, 482 srv_idle srv_master_thread log flush and writes: 0 ---------- SEMAPHORES ---------- OS WAIT ARRAY INFO: reservation count 87 OS WAIT ARRAY INFO: signal count 87 RW-shared spins 7, rounds 12, OS waits 5 RW-excl spins 4, rounds 120, OS waits 4 RW-sx spins 0, rounds 0, OS waits 0 Spin rounds per wait: 1.71 RW-shared, 30.00 RW-excl, 0.00 RW-sx ------------ TRANSACTIONS ------------ Trx id counter 10048 Purge done for trx's n:o < 10048 undo n:o < 0 state: running but idle History list length 13 LIST OF TRANSACTIONS FOR EACH SESSION: ---TRANSACTION 421722606615144, not started 0 lock struct(s), heap size 1136, 0 row lock(s) ---TRANSACTION 421722606614272, not started 0 lock struct(s), heap size 1136, 0 row lock(s) -------- FILE I/O -------- I/O thread 0 state: waiting for completed aio requests (insert buffer thread) I/O thread 1 state: waiting for completed aio requests (log thread) I/O thread 2 state: waiting for completed aio requests (read thread) I/O thread 3 state: waiting for completed aio requests (read thread) I/O thread 4 state: waiting for completed aio requests (read thread) I/O thread 5 state: waiting for completed aio requests (read thread) I/O thread 6 state: waiting for completed aio requests (write thread) I/O thread 7 state: waiting for completed aio requests (write thread) I/O thread 8 state: waiting for completed aio requests (write thread) I/O thread 9 state: waiting for completed aio requests (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 1342 OS file reads, 1808 OS file writes, 641 OS fsyncs 0.09 reads/s, 16384 avg bytes/read, 4.20 writes/s, 1.29 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 34679, node heap has 0 buffer(s) Hash table size 34679, node heap has 2 buffer(s) Hash table size 34679, node heap has 0 buffer(s) Hash table size 34679, node heap has 1 buffer(s) Hash table size 34679, node heap has 1 buffer(s) Hash table size 34679, node heap has 0 buffer(s) Hash table size 34679, node heap has 3 buffer(s) Hash table size 34679, node heap has 6 buffer(s) 748.26 hash searches/s, 158.85 non-hash searches/s --- LOG --- Log sequence number 51251654 Log buffer assigned up to 51251654 Log buffer completed up to 51251654 Log written up to 51251654 Log flushed up to 51251654 Added dirty pages up to 51251654 Pages flushed up to 51251654 Last checkpoint at 51251654 568 log i/o's done, 1.11 log i/o's/second ---------------------- BUFFER POOL AND MEMORY ---------------------- Total large memory allocated 137363456 Dictionary memory allocated 727605 Buffer pool size 8192 Free buffers 6760 Database pages 1419 Old database pages 503 Modified db pages 0 Pending reads 0 Pending writes: LRU 0, flush list 0, single page 0 Pages made young 287, not young 109 0.00 youngs/s, 0.00 non-youngs/s Pages read 1221, created 201, written 1084 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: 1419, unzip_LRU len: 0 I/O sum[101]: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=365, Main thread ID=140247120680704 , state=sleeping Number of rows inserted 340, updated 648, deleted 40, read 615786 0.03 inserts/s, 0.00 updates/s, 1.14 deletes/s, 1365.19 reads/s ---------------------------- END OF INNODB MONITOR OUTPUT ============================