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InnoDB
Supports transactions, row-level locking, foreign keys and encryption for tables
[ 変数 | バッファプール | InnoDB ステータス ]
===================================== 2026-04-29 07:51:14 0x724471ed36c0 INNODB MONITOR OUTPUT ===================================== Per second averages calculated from the last 14 seconds ----------------- BACKGROUND THREAD ----------------- srv_master_thread loops: 4949 srv_active, 0 srv_shutdown, 6985 srv_idle srv_master_thread log flush and writes: 11934 ---------- SEMAPHORES ---------- OS WAIT ARRAY INFO: reservation count 541786 OS WAIT ARRAY INFO: signal count 97082 RW-shared spins 9702, rounds 283967, OS waits 6732 RW-excl spins 44, rounds 801, OS waits 21 RW-sx spins 0, rounds 0, OS waits 0 Spin rounds per wait: 29.27 RW-shared, 18.20 RW-excl, 0.00 RW-sx ------------ TRANSACTIONS ------------ Trx id counter 9231013 Purge done for trx's n:o < 9231013 undo n:o < 0 state: running but idle History list length 3 LIST OF TRANSACTIONS FOR EACH SESSION: ---TRANSACTION 407113025196536, not started 0 lock struct(s), heap size 1128, 0 row lock(s) ---TRANSACTION 407113025183888, not started 0 lock struct(s), heap size 1128, 0 row lock(s) ---TRANSACTION 407113025192320, not started 0 lock struct(s), heap size 1128, 0 row lock(s) ---TRANSACTION 407113025188104, 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 357923 OS file reads, 63858 OS file writes, 40718 OS fsyncs 4.29 reads/s, 16384 avg bytes/read, 4.43 writes/s, 2.64 fsyncs/s ------------------------------------- INSERT BUFFER AND ADAPTIVE HASH INDEX ------------------------------------- Ibuf: size 1, free list len 368, seg size 370, 27 merges merged operations: insert 28, delete mark 4, 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 1 buffer(s) Hash table size 4441, node heap has 1 buffer(s) Hash table size 4441, node heap has 1 buffer(s) 25.43 hash searches/s, 36.64 non-hash searches/s --- LOG --- Log sequence number 4353704552 Log flushed up to 4353704532 Pages flushed up to 4353703386 Last checkpoint at 4353701042 0 pending log flushes, 0 pending chkp writes 22502 log i/o's done, 1.21 log i/o's/second ---------------------- BUFFER POOL AND MEMORY ---------------------- Total large memory allocated 33554432 Dictionary memory allocated 541680 Buffer pool size 1003 Free buffers 731 Database pages 257 Old database pages 0 Modified db pages 3 Percent of dirty pages(LRU & free pages): 0.303 Max dirty pages percent: 75.000 Pending reads 0 Pending writes: LRU 0, flush list 0, single page 0 Pages made young 1258, not young 9039528 0.00 youngs/s, 0.00 non-youngs/s Pages read 357694, created 532, written 34508 4.29 reads/s, 0.00 creates/s, 2.64 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: 257, unzip_LRU len: 0 I/O sum[519]: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=1167, Main thread ID=125637842917056, state: sleeping Number of rows inserted 61, updated 7422, deleted 0, read 215249394 0.00 inserts/s, 0.50 updates/s, 0.00 deletes/s, 12849.87 reads/s Number of system rows inserted 0, updated 0, deleted 0, read 0 0.00 inserts/s, 0.00 updates/s, 0.00 deletes/s, 0.00 reads/s ---------------------------- END OF INNODB MONITOR OUTPUT ============================