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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 ]
===================================== 2026-02-17 07:53:20 0x7901654886c0 INNODB MONITOR OUTPUT ===================================== Per second averages calculated from the last 58 seconds ----------------- BACKGROUND THREAD ----------------- srv_master_thread loops: 714 srv_active, 0 srv_shutdown, 65298 srv_idle srv_master_thread log flush and writes: 66011 ---------- SEMAPHORES ---------- OS WAIT ARRAY INFO: reservation count 92164 OS WAIT ARRAY INFO: signal count 73193 RW-shared spins 40645, rounds 1219457, OS waits 33483 RW-excl spins 13, rounds 690, OS waits 22 RW-sx spins 0, rounds 0, OS waits 0 Spin rounds per wait: 30.00 RW-shared, 53.08 RW-excl, 0.00 RW-sx ------------ TRANSACTIONS ------------ Trx id counter 5554734 Purge done for trx's n:o < 5554733 undo n:o < 0 state: running but idle History list length 3 LIST OF TRANSACTIONS FOR EACH SESSION: ---TRANSACTION 414521634287880, not started 0 lock struct(s), heap size 1128, 0 row lock(s) ---TRANSACTION 414521634283664, 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 1394439 OS file reads, 8035 OS file writes, 3610 OS fsyncs 19.28 reads/s, 16384 avg bytes/read, 2.26 writes/s, 1.22 fsyncs/s ------------------------------------- INSERT BUFFER AND ADAPTIVE HASH INDEX ------------------------------------- Ibuf: size 1, free list len 368, seg size 370, 8 merges merged operations: insert 66, 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 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) Hash table size 4441, node heap has 0 buffer(s) 13.00 hash searches/s, 8.97 non-hash searches/s --- LOG --- Log sequence number 2355177667 Log flushed up to 2355177667 Pages flushed up to 2355177667 Last checkpoint at 2355174127 0 pending log flushes, 0 pending chkp writes 2177 log i/o's done, 0.60 log i/o's/second ---------------------- BUFFER POOL AND MEMORY ---------------------- Total large memory allocated 33554432 Dictionary memory allocated 390400 Buffer pool size 1003 Free buffers 717 Database pages 271 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 17931, not young 48366242 0.02 youngs/s, 46.53 non-youngs/s Pages read 1394273, created 205, written 5280 19.28 reads/s, 0.03 creates/s, 1.43 writes/s Buffer pool hit rate 888 / 1000, young-making rate 0 / 1000 not 268 / 1000 Pages read ahead 16.00/s, evicted without access 0.00/s, Random read ahead 0.00/s LRU len: 271, unzip_LRU len: 0 I/O sum[270]:cur[18], unzip sum[0]:cur[0] -------------- ROW OPERATIONS -------------- 0 queries inside InnoDB, 0 queries in queue 0 read views open inside InnoDB Process ID=805790, Main thread ID=133045998839488, state: sleeping Number of rows inserted 45, updated 1455, deleted 0, read 107396425 0.00 inserts/s, 0.33 updates/s, 0.00 deletes/s, 727.35 reads/s Number of system rows inserted 0, updated 0, deleted 0, read 5529 0.00 inserts/s, 0.00 updates/s, 0.00 deletes/s, 0.00 reads/s ---------------------------- END OF INNODB MONITOR OUTPUT ============================