控制台
存储引擎
InnoDB
Supports transactions, row-level locking, foreign keys and encryption for tables
===================================== 2024-12-26 20:17:01 0x7332a88c6640 INNODB MONITOR OUTPUT ===================================== Per second averages calculated from the last 50 seconds ----------------- BACKGROUND THREAD ----------------- srv_master_thread loops: 11119 srv_active, 0 srv_shutdown, 108940 srv_idle srv_master_thread log flush and writes: 120054 ---------- SEMAPHORES ---------- OS WAIT ARRAY INFO: reservation count 431240 OS WAIT ARRAY INFO: signal count 181197 RW-shared spins 21469, rounds 586625, OS waits 18786 RW-excl spins 1346, rounds 11571, OS waits 302 RW-sx spins 50, rounds 867, OS waits 17 Spin rounds per wait: 27.32 RW-shared, 8.60 RW-excl, 17.34 RW-sx ------------ TRANSACTIONS ------------ Trx id counter 2085595 Purge done for trx's n:o < 2085595 undo n:o < 0 state: running History list length 4 LIST OF TRANSACTIONS FOR EACH SESSION: ---TRANSACTION 408136330518792, not started 0 lock struct(s), heap size 1128, 0 row lock(s) ---TRANSACTION 408136330514576, not started 0 lock struct(s), heap size 1128, 0 row lock(s) -------- FILE I/O -------- I/O thread 0 state: waiting for i/o request (insert buffer thread) I/O thread 1 state: waiting for i/o request (log thread) I/O thread 2 state: waiting for i/o request (read thread) I/O thread 3 state: waiting for i/o request (read thread) I/O thread 4 state: waiting for i/o request (read thread) I/O thread 5 state: waiting for i/o request (read thread) I/O thread 6 state: waiting for i/o request (write thread) I/O thread 7 state: waiting for i/o request (write thread) I/O thread 8 state: waiting for i/o request (write thread) I/O thread 9 state: waiting for i/o request (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 1249079 OS file reads, 195964 OS file writes, 109925 OS fsyncs 0.18 reads/s, 16384 avg bytes/read, 0.44 writes/s, 0.40 fsyncs/s ------------------------------------- INSERT BUFFER AND ADAPTIVE HASH INDEX ------------------------------------- Ibuf: size 1, free list len 12, seg size 14, 3010 merges merged operations: insert 3221, delete mark 3610, delete 3014 discarded operations: insert 0, delete mark 0, delete 0 Hash table size 4441, node heap has 2 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 2 buffer(s) Hash table size 4441, node heap has 0 buffer(s) Hash table size 4441, node heap has 1 buffer(s) 0.32 hash searches/s, 0.76 non-hash searches/s --- LOG --- Log sequence number 1411822999 Log flushed up to 1411822999 Pages flushed up to 1411822999 Last checkpoint at 1411822990 0 pending log flushes, 0 pending chkp writes 68662 log i/o's done, 0.28 log i/o's/second ---------------------- BUFFER POOL AND MEMORY ---------------------- Total large memory allocated 33554432 Dictionary memory allocated 880840 Buffer pool size 1003 Free buffers 738 Database pages 256 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 111277, not young 1614399 0.00 youngs/s, 0.00 non-youngs/s Pages read 1248714, created 1127, written 111892 0.18 reads/s, 0.00 creates/s, 0.12 writes/s Buffer pool hit rate 912 / 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: 256, unzip_LRU len: 0 I/O sum[15]: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=310907, Main thread ID=126660798056000, state: sleeping Number of rows inserted 4980, updated 13084, deleted 4811, read 43793522 0.00 inserts/s, 0.04 updates/s, 0.00 deletes/s, 0.34 reads/s Number of system rows inserted 0, updated 0, deleted 0, read 90613 0.00 inserts/s, 0.00 updates/s, 0.00 deletes/s, 0.00 reads/s ---------------------------- END OF INNODB MONITOR OUTPUT ============================