存储引擎
InnoDB
Supports transactions, row-level locking, foreign keys and encryption for tables
===================================== 2026-09-05 15:59:11 0xf98 INNODB MONITOR OUTPUT ===================================== Per second averages calculated from the last 53 seconds ----------------- BACKGROUND THREAD ----------------- srv_master_thread loops: 9573 srv_active, 0 srv_shutdown, 3283892 srv_idle srv_master_thread log flush and writes: 3293465 ---------- SEMAPHORES ---------- OS WAIT ARRAY INFO: reservation count 70879 OS WAIT ARRAY INFO: signal count 15696 RW-shared spins 8609, rounds 242195, OS waits 6518 RW-excl spins 6, rounds 152, OS waits 3 RW-sx spins 0, rounds 0, OS waits 0 Spin rounds per wait: 28.13 RW-shared, 25.33 RW-excl, 0.00 RW-sx ------------ TRANSACTIONS ------------ Trx id counter 49513 Purge done for trx's n:o < 49513 undo n:o < 0 state: running but idle History list length 0 LIST OF TRANSACTIONS FOR EACH SESSION: ---TRANSACTION 284258631618992, not started 0 lock struct(s), heap size 1128, 0 row lock(s) ---TRANSACTION 284258631614824, ACTIVE 0 sec mysql tables in use 1, locked 0 0 lock struct(s), heap size 1128, 0 row lock(s) MySQL thread id 37302, OS thread handle 29736, query id 1983974 localhost 127.0.0.1 pma Executing SELECT `tables` FROM `phpmyadmin`.`pma__favorite` WHERE `username` = 'root' Trx read view will not see trx with id >= 49513, sees < 49513 ---TRANSACTION 284258631610656, not started 0 lock struct(s), heap size 1128, 0 row lock(s) ---TRANSACTION 284258631606488, not started 0 lock struct(s), heap size 1128, 0 row lock(s) ---TRANSACTION 284258631602320, 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 21060 OS file reads, 113176 OS file writes, 71158 OS fsyncs 0.36 reads/s, 16384 avg bytes/read, 1.34 writes/s, 0.51 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 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 0 buffer(s) Hash table size 4441, node heap has 1 buffer(s) Hash table size 4441, node heap has 1 buffer(s) 3.06 hash searches/s, 9.09 non-hash searches/s --- LOG --- Log sequence number 27144008 Log flushed up to 27144008 Pages flushed up to 27144008 Last checkpoint at 27143999 0 pending log flushes, 0 pending chkp writes 41301 log i/o's done, 0.34 log i/o's/second ---------------------- BUFFER POOL AND MEMORY ---------------------- Total large memory allocated 33554432 Dictionary memory allocated 80128 Buffer pool size 1003 Free buffers 732 Database pages 268 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 21022, created 719, written 61125 0.36 reads/s, 0.00 creates/s, 0.92 writes/s Buffer pool hit rate 984 / 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: 268, unzip_LRU len: 0 I/O sum[68]: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=18316, Main thread ID=21920, state: sleeping Number of rows inserted 1, updated 14124, deleted 0, read 303444 0.00 inserts/s, 0.13 updates/s, 0.00 deletes/s, 2.91 reads/s Number of system rows inserted 0, updated 0, deleted 0, read 14828 0.00 inserts/s, 0.00 updates/s, 0.00 deletes/s, 0.00 reads/s ---------------------------- END OF INNODB MONITOR OUTPUT ============================