存储引擎
InnoDB
Supports transactions, row-level locking, foreign keys and encryption for tables
===================================== 2026-03-12 07:14:59 0x7869005b4640 INNODB MONITOR OUTPUT ===================================== Per second averages calculated from the last 35 seconds ----------------- BACKGROUND THREAD ----------------- srv_master_thread loops: 6089 srv_active, 0 srv_shutdown, 2488369 srv_idle srv_master_thread log flush and writes: 2494394 ---------- SEMAPHORES ---------- OS WAIT ARRAY INFO: reservation count 20452 OS WAIT ARRAY INFO: signal count 14808 RW-shared spins 11512, rounds 345254, OS waits 11490 RW-excl spins 4, rounds 61, OS waits 2 RW-sx spins 0, rounds 0, OS waits 0 Spin rounds per wait: 29.99 RW-shared, 15.25 RW-excl, 0.00 RW-sx ------------ TRANSACTIONS ------------ Trx id counter 1381170 Purge done for trx's n:o < 1381170 undo n:o < 0 state: running History list length 8 LIST OF TRANSACTIONS FOR EACH SESSION: ---TRANSACTION 413867302400384, not started 0 lock struct(s), heap size 1128, 0 row lock(s) ---TRANSACTION 413867302396168, not started 0 lock struct(s), heap size 1128, 0 row lock(s) ---TRANSACTION 413867302391952, 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 7198 OS file reads, 74169 OS file writes, 54581 OS fsyncs 0.29 reads/s, 16384 avg bytes/read, 2.26 writes/s, 0.89 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) 2.69 hash searches/s, 6.83 non-hash searches/s --- LOG --- Log sequence number 364044414 Log flushed up to 364044394 Pages flushed up to 364036159 Last checkpoint at 364024069 0 pending log flushes, 0 pending chkp writes 35657 log i/o's done, 0.71 log i/o's/second ---------------------- BUFFER POOL AND MEMORY ---------------------- Total large memory allocated 33554432 Dictionary memory allocated 75640 Buffer pool size 1003 Free buffers 738 Database pages 262 Old database pages 0 Modified db pages 17 Percent of dirty pages(LRU & free pages): 1.698 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 7163, created 399, written 32022 0.29 reads/s, 0.00 creates/s, 1.49 writes/s Buffer pool hit rate 987 / 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: 262, unzip_LRU len: 0 I/O sum[293]:cur[2], unzip sum[0]:cur[0] -------------- ROW OPERATIONS -------------- 0 queries inside InnoDB, 0 queries in queue 0 read views open inside InnoDB Process ID=1889, Main thread ID=132391125366336, state: sleeping Number of rows inserted 0, updated 6424, deleted 0, read 60356 0.00 inserts/s, 0.49 updates/s, 0.00 deletes/s, 2.66 reads/s Number of system rows inserted 0, updated 0, deleted 0, read 6564 0.00 inserts/s, 0.00 updates/s, 0.00 deletes/s, 0.00 reads/s ---------------------------- END OF INNODB MONITOR OUTPUT ============================