控制台
存储引擎
InnoDB
Supports transactions, row-level locking, foreign keys and encryption for tables
===================================== 2024-11-21 20:38:09 0x7f63a4e90700 INNODB MONITOR OUTPUT ===================================== Per second averages calculated from the last 44 seconds ----------------- BACKGROUND THREAD ----------------- srv_master_thread loops: 845717 srv_active, 0 srv_shutdown, 1851947 srv_idle srv_master_thread log flush and writes: 2697255 ---------- SEMAPHORES ---------- OS WAIT ARRAY INFO: reservation count 1926828 OS WAIT ARRAY INFO: signal count 1794571 RW-shared spins 913270, rounds 27395114, OS waits 913110 RW-excl spins 5703, rounds 172628, OS waits 5698 RW-sx spins 33, rounds 990, OS waits 33 Spin rounds per wait: 30.00 RW-shared, 30.27 RW-excl, 30.00 RW-sx ------------ TRANSACTIONS ------------ Trx id counter 6566932 Purge done for trx's n:o < 6566932 undo n:o < 0 state: running but idle History list length 1 LIST OF TRANSACTIONS FOR EACH SESSION: ---TRANSACTION 421540956115208, not started 0 lock struct(s), heap size 1128, 0 row lock(s) ---TRANSACTION 421540956110992, 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 733974 OS file reads, 9922237 OS file writes, 6697130 OS fsyncs 0.23 reads/s, 16384 avg bytes/read, 3.36 writes/s, 2.39 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 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) 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) 4.66 hash searches/s, 8.59 non-hash searches/s --- LOG --- Log sequence number 3134082287 Log flushed up to 3134082287 Pages flushed up to 3134082287 Last checkpoint at 3134082244 0 pending log flushes, 0 pending chkp writes 3806744 log i/o's done, 1.41 log i/o's/second ---------------------- BUFFER POOL AND MEMORY ---------------------- Total large memory allocated 33554432 Dictionary memory allocated 75640 Buffer pool size 1002 Free buffers 743 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 0, not young 0 0.00 youngs/s, 0.00 non-youngs/s Pages read 733940, created 45532, written 5091142 0.23 reads/s, 0.00 creates/s, 1.59 writes/s Buffer pool hit rate 993 / 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[85]: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=2563, Main thread ID=140064982034176, state: sleeping Number of rows inserted 0, updated 1069015, deleted 0, read 15081713 0.00 inserts/s, 0.32 updates/s, 0.00 deletes/s, 4.07 reads/s Number of system rows inserted 0, updated 0, deleted 0, read 73747 0.00 inserts/s, 0.00 updates/s, 0.00 deletes/s, 0.00 reads/s ---------------------------- END OF INNODB MONITOR OUTPUT ============================