存储引擎
InnoDB
Supports transactions, row-level locking, foreign keys and encryption for tables
===================================== 2026-06-07 06:14:37 0x348c INNODB MONITOR OUTPUT ===================================== Per second averages calculated from the last 33 seconds ----------------- BACKGROUND THREAD ----------------- srv_master_thread loops: 6333 srv_active, 0 srv_shutdown, 1835857 srv_idle srv_master_thread log flush and writes: 1842190 ---------- SEMAPHORES ---------- OS WAIT ARRAY INFO: reservation count 98898 OS WAIT ARRAY INFO: signal count 40272 RW-shared spins 8621, rounds 258491, OS waits 8603 RW-excl spins 9, rounds 300, OS waits 8 RW-sx spins 0, rounds 0, OS waits 0 Spin rounds per wait: 29.98 RW-shared, 33.33 RW-excl, 0.00 RW-sx ------------ TRANSACTIONS ------------ Trx id counter 213091 Purge done for trx's n:o < 213091 undo n:o < 0 state: running History list length 18 LIST OF TRANSACTIONS FOR EACH SESSION: ---TRANSACTION 283279133614512, not started 0 lock struct(s), heap size 1128, 0 row lock(s) ---TRANSACTION 283279133606176, not started 0 lock struct(s), heap size 1128, 0 row lock(s) ---TRANSACTION 283279133610344, not started 0 lock struct(s), heap size 1128, 0 row lock(s) ---TRANSACTION 283279133602008, not started 0 lock struct(s), heap size 1128, 0 row lock(s) ---TRANSACTION 283279133597840, 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 13138 OS file reads, 71778 OS file writes, 50918 OS fsyncs 2.18 reads/s, 16384 avg bytes/read, 7.94 writes/s, 3.70 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 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 0 buffer(s) Hash table size 4441, node heap has 0 buffer(s) Hash table size 4441, node heap has 1 buffer(s) 11.15 hash searches/s, 31.70 non-hash searches/s --- LOG --- Log sequence number 126788637 Log flushed up to 126788601 Pages flushed up to 126778896 Last checkpoint at 126769496 0 pending log flushes, 0 pending chkp writes 30535 log i/o's done, 2.39 log i/o's/second ---------------------- BUFFER POOL AND MEMORY ---------------------- Total large memory allocated 33554432 Dictionary memory allocated 185296 Buffer pool size 1003 Free buffers 732 Database pages 266 Old database pages 0 Modified db pages 18 Percent of dirty pages(LRU & free pages): 1.802 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 13061, created 485, written 34167 2.18 reads/s, 0.15 creates/s, 5.06 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: 266, unzip_LRU len: 0 I/O sum[287]: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=3280, Main thread ID=4180, state: sleeping Number of rows inserted 0, updated 6846, deleted 0, read 68085 0.00 inserts/s, 1.67 updates/s, 0.00 deletes/s, 16.73 reads/s Number of system rows inserted 0, updated 0, deleted 0, read 12289 0.00 inserts/s, 0.00 updates/s, 0.00 deletes/s, 0.00 reads/s ---------------------------- END OF INNODB MONITOR OUTPUT ============================