存储引擎
InnoDB
Supports transactions, row-level locking, foreign keys and encryption for tables
===================================== 2026-03-19 19:36:08 0x65d4 INNODB MONITOR OUTPUT ===================================== Per second averages calculated from the last 46 seconds ----------------- BACKGROUND THREAD ----------------- srv_master_thread loops: 57603 srv_active, 0 srv_shutdown, 4528 srv_idle srv_master_thread log flush and writes: 62131 ---------- SEMAPHORES ---------- OS WAIT ARRAY INFO: reservation count 3803603 OS WAIT ARRAY INFO: signal count 140794 RW-shared spins 13646, rounds 400877, OS waits 10966 RW-excl spins 769, rounds 19514, OS waits 540 RW-sx spins 14, rounds 330, OS waits 8 Spin rounds per wait: 29.38 RW-shared, 25.38 RW-excl, 23.57 RW-sx ------------ TRANSACTIONS ------------ Trx id counter 1887130 Purge done for trx's n:o < 1887130 undo n:o < 0 state: running History list length 6 LIST OF TRANSACTIONS FOR EACH SESSION: ---TRANSACTION 283848590824072, not started 0 lock struct(s), heap size 1128, 0 row lock(s) ---TRANSACTION 283848590803232, not started 0 lock struct(s), heap size 1128, 0 row lock(s) ---TRANSACTION 283848590819904, not started 0 lock struct(s), heap size 1128, 0 row lock(s) ---TRANSACTION 283848590807400, not started 0 lock struct(s), heap size 1128, 0 row lock(s) ---TRANSACTION 283848590799064, not started flushing log mysql tables in use 1, locked 1 0 lock struct(s), heap size 1128, 0 row lock(s) ---TRANSACTION 283848590811568, not started 0 lock struct(s), heap size 1128, 0 row lock(s) ---TRANSACTION 283848590794896, not started 0 lock struct(s), heap size 1128, 0 row lock(s) ---TRANSACTION 283848590832408, not started 0 lock struct(s), heap size 1128, 0 row lock(s) ---TRANSACTION 283848590815736, 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: 1; buffer pool: 0 128026 OS file reads, 729417 OS file writes, 404494 OS fsyncs 1.85 reads/s, 16384 avg bytes/read, 7.09 writes/s, 4.09 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 1 buffer(s) Hash table size 4441, node heap has 1 buffer(s) 16.37 hash searches/s, 22.93 non-hash searches/s --- LOG --- Log sequence number 1107316161 Log flushed up to 1107314955 Pages flushed up to 1107313789 Last checkpoint at 1107307290 1 pending log flushes, 0 pending chkp writes 212902 log i/o's done, 2.13 log i/o's/second ---------------------- BUFFER POOL AND MEMORY ---------------------- Total large memory allocated 33554432 Dictionary memory allocated 120192 Buffer pool size 1003 Free buffers 739 Database pages 258 Old database pages 0 Modified db pages 5 Percent of dirty pages(LRU & free pages): 0.501 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 127958, created 5282, written 436219 1.85 reads/s, 0.07 creates/s, 4.17 writes/s Buffer pool hit rate 982 / 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: 258, unzip_LRU len: 0 I/O sum[309]:cur[9], unzip sum[0]:cur[0] -------------- ROW OPERATIONS -------------- 0 queries inside InnoDB, 0 queries in queue 0 read views open inside InnoDB Process ID=17728, Main thread ID=5776, state: sleeping Number of rows inserted 177, updated 127333, deleted 77, read 5758144 0.00 inserts/s, 0.98 updates/s, 0.00 deletes/s, 50.89 reads/s Number of system rows inserted 0, updated 0, deleted 0, read 2453 0.00 inserts/s, 0.00 updates/s, 0.00 deletes/s, 0.00 reads/s ---------------------------- END OF INNODB MONITOR OUTPUT ============================