控制台
存储引擎
InnoDB
Supports transactions, row-level locking, foreign keys and encryption for tables
===================================== 2024-10-05 08:24:04 0x7f963c342700 INNODB MONITOR OUTPUT ===================================== Per second averages calculated from the last 27 seconds ----------------- BACKGROUND THREAD ----------------- srv_master_thread loops: 495132 srv_active, 0 srv_shutdown, 3360599 srv_idle srv_master_thread log flush and writes: 3855224 ---------- SEMAPHORES ---------- OS WAIT ARRAY INFO: reservation count 900279 OS WAIT ARRAY INFO: signal count 845441 RW-shared spins 701840, rounds 21054603, OS waits 701805 RW-excl spins 1456, rounds 43815, OS waits 1448 RW-sx spins 10, rounds 300, OS waits 10 Spin rounds per wait: 30.00 RW-shared, 30.09 RW-excl, 30.00 RW-sx ------------ TRANSACTIONS ------------ Trx id counter 2934539 Purge done for trx's n:o < 2934539 undo n:o < 0 state: running History list length 1 LIST OF TRANSACTIONS FOR EACH SESSION: ---TRANSACTION 421758780313864, not started 0 lock struct(s), heap size 1128, 0 row lock(s) ---TRANSACTION 421758780309648, 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 384732 OS file reads, 5789769 OS file writes, 4136473 OS fsyncs 0.04 reads/s, 16384 avg bytes/read, 1.22 writes/s, 0.81 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 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 0 buffer(s) Hash table size 4441, node heap has 1 buffer(s) 1.81 hash searches/s, 2.74 non-hash searches/s --- LOG --- Log sequence number 1246585930 Log flushed up to 1246585930 Pages flushed up to 1246585930 Last checkpoint at 1246585921 0 pending log flushes, 0 pending chkp writes 2486634 log i/o's done, 0.52 log i/o's/second ---------------------- BUFFER POOL AND MEMORY ---------------------- Total large memory allocated 33554432 Dictionary memory allocated 75640 Buffer pool size 1002 Free buffers 742 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 384698, created 26710, written 2723893 0.04 reads/s, 0.00 creates/s, 0.59 writes/s Buffer pool hit rate 997 / 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[17]: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=6545, Main thread ID=140282741905152, state: sleeping Number of rows inserted 0, updated 545411, deleted 0, read 6699295 0.00 inserts/s, 0.11 updates/s, 0.00 deletes/s, 1.59 reads/s Number of system rows inserted 0, updated 0, deleted 0, read 29086 0.00 inserts/s, 0.00 updates/s, 0.00 deletes/s, 0.00 reads/s ---------------------------- END OF INNODB MONITOR OUTPUT ============================