存储引擎
InnoDB
Supports transactions, row-level locking, foreign keys and encryption for tables
===================================== 2026-08-26 19:00:20 0x5d88 INNODB MONITOR OUTPUT ===================================== Per second averages calculated from the last 19 seconds ----------------- BACKGROUND THREAD ----------------- srv_master_thread loops: 16065 srv_active, 0 srv_shutdown, 2304862 srv_idle srv_master_thread log flush and writes: 2320927 ---------- SEMAPHORES ---------- OS WAIT ARRAY INFO: reservation count 9485 OS WAIT ARRAY INFO: signal count 8165 RW-shared spins 4559, rounds 136043, OS waits 4532 RW-excl spins 1023, rounds 18327, OS waits 561 RW-sx spins 6, rounds 131, OS waits 4 Spin rounds per wait: 29.84 RW-shared, 17.91 RW-excl, 21.83 RW-sx ------------ TRANSACTIONS ------------ Trx id counter 232515 Purge done for trx's n:o < 232515 undo n:o < 0 state: running but idle History list length 0 LIST OF TRANSACTIONS FOR EACH SESSION: ---TRANSACTION 284255858409760, not started 0 lock struct(s), heap size 1128, 0 row lock(s) ---TRANSACTION 284255858405592, not started 0 lock struct(s), heap size 1128, 0 row lock(s) ---TRANSACTION 284255858401424, 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 79322 OS file reads, 185454 OS file writes, 99474 OS fsyncs 0.11 reads/s, 16384 avg bytes/read, 0.00 writes/s, 0.00 fsyncs/s ------------------------------------- INSERT BUFFER AND ADAPTIVE HASH INDEX ------------------------------------- Ibuf: size 1, free list len 14, seg size 16, 15 merges merged operations: insert 16, 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 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 0 buffer(s) Hash table size 4441, node heap has 1 buffer(s) Hash table size 4441, node heap has 1 buffer(s) 3.05 hash searches/s, 5.10 non-hash searches/s --- LOG --- Log sequence number 144232192 Log flushed up to 144232192 Pages flushed up to 144232192 Last checkpoint at 144232183 0 pending log flushes, 0 pending chkp writes 52521 log i/o's done, 0.00 log i/o's/second ---------------------- BUFFER POOL AND MEMORY ---------------------- Total large memory allocated 33554432 Dictionary memory allocated 653544 Buffer pool size 1003 Free buffers 709 Database pages 287 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 1055, not young 11139 0.00 youngs/s, 0.00 non-youngs/s Pages read 79055, created 1406, written 115457 0.11 reads/s, 0.00 creates/s, 0.00 writes/s Buffer pool hit rate 991 / 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: 287, unzip_LRU len: 0 I/O sum[2]: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=11340, Main thread ID=13864, state: sleeping Number of rows inserted 665, updated 25618, deleted 78, read 3474129 0.00 inserts/s, 0.00 updates/s, 0.00 deletes/s, 3.05 reads/s Number of system rows inserted 0, updated 0, deleted 0, read 176106 0.00 inserts/s, 0.00 updates/s, 0.00 deletes/s, 0.00 reads/s ---------------------------- END OF INNODB MONITOR OUTPUT ============================