存储引擎
InnoDB
Supports transactions, row-level locking, foreign keys and encryption for tables
===================================== 2026-07-29 04:40:47 0x7578 INNODB MONITOR OUTPUT ===================================== Per second averages calculated from the last 31 seconds ----------------- BACKGROUND THREAD ----------------- srv_master_thread loops: 4832 srv_active, 0 srv_shutdown, 717065 srv_idle srv_master_thread log flush and writes: 721897 ---------- SEMAPHORES ---------- OS WAIT ARRAY INFO: reservation count 156995 OS WAIT ARRAY INFO: signal count 119765 RW-shared spins 151732, rounds 3826348, OS waits 113448 RW-excl spins 17755, rounds 39739, OS waits 378 RW-sx spins 967, rounds 12109, OS waits 247 Spin rounds per wait: 25.22 RW-shared, 2.24 RW-excl, 12.52 RW-sx ------------ TRANSACTIONS ------------ Trx id counter 30722844 Purge done for trx's n:o < 30722844 undo n:o < 0 state: running History list length 1 LIST OF TRANSACTIONS FOR EACH SESSION: ---TRANSACTION 283265498890528, not started 0 lock struct(s), heap size 1128, 0 row lock(s) ---TRANSACTION 283265498886360, not started 0 lock struct(s), heap size 1128, 0 row lock(s) ---TRANSACTION 283265498882192, 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 857554 OS file reads, 81224 OS file writes, 46364 OS fsyncs 2.48 reads/s, 16384 avg bytes/read, 5.81 writes/s, 2.87 fsyncs/s ------------------------------------- INSERT BUFFER AND ADAPTIVE HASH INDEX ------------------------------------- Ibuf: size 1, free list len 0, seg size 2, 1183 merges merged operations: insert 2636, delete mark 47, delete 26 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 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 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) 14.35 hash searches/s, 26.32 non-hash searches/s --- LOG --- Log sequence number 23120085477 Log flushed up to 23120085457 Pages flushed up to 23120071491 Last checkpoint at 23120070258 0 pending log flushes, 0 pending chkp writes 27008 log i/o's done, 2.13 log i/o's/second ---------------------- BUFFER POOL AND MEMORY ---------------------- Total large memory allocated 33554432 Dictionary memory allocated 125200 Buffer pool size 1003 Free buffers 732 Database pages 264 Old database pages 0 Modified db pages 33 Percent of dirty pages(LRU & free pages): 3.310 Max dirty pages percent: 75.000 Pending reads 0 Pending writes: LRU 0, flush list 0, single page 0 Pages made young 7685, not young 26701997 0.00 youngs/s, 0.00 non-youngs/s Pages read 857501, created 472, written 48095 2.48 reads/s, 0.03 creates/s, 3.32 writes/s Buffer pool hit rate 977 / 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: 264, unzip_LRU len: 0 I/O sum[176]:cur[4], unzip sum[0]:cur[0] -------------- ROW OPERATIONS -------------- 0 queries inside InnoDB, 0 queries in queue 0 read views open inside InnoDB Process ID=26560, Main thread ID=26400, state: sleeping Number of rows inserted 6677, updated 14848, deleted 4087, read 83679531 0.00 inserts/s, 1.65 updates/s, 0.00 deletes/s, 26.19 reads/s Number of system rows inserted 0, updated 0, deleted 0, read 5008 0.00 inserts/s, 0.00 updates/s, 0.00 deletes/s, 0.00 reads/s ---------------------------- END OF INNODB MONITOR OUTPUT ============================