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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 ]
===================================== 2026-02-16 23:05:54 0xffc INNODB MONITOR OUTPUT ===================================== Per second averages calculated from the last 7 seconds ----------------- BACKGROUND THREAD ----------------- srv_master_thread loops: 457 srv_active, 0 srv_shutdown, 619705 srv_idle srv_master_thread log flush and writes: 620162 ---------- SEMAPHORES ---------- OS WAIT ARRAY INFO: reservation count 6273 OS WAIT ARRAY INFO: signal count 151 RW-shared spins 284, rounds 8445, OS waits 132 RW-excl spins 20, rounds 609, OS waits 2 RW-sx spins 0, rounds 0, OS waits 0 Spin rounds per wait: 29.74 RW-shared, 30.45 RW-excl, 0.00 RW-sx ------------ TRANSACTIONS ------------ Trx id counter 44298 Purge done for trx's n:o < 44298 undo n:o < 0 state: running History list length 4 LIST OF TRANSACTIONS FOR EACH SESSION: ---TRANSACTION 283311632392480, not started 0 lock struct(s), heap size 1128, 0 row lock(s) ---TRANSACTION 283311632388312, not started 0 lock struct(s), heap size 1128, 0 row lock(s) ---TRANSACTION 283311632384144, not started 0 lock struct(s), heap size 1128, 0 row lock(s) -------- FILE I/O -------- I/O thread 0 state: native aio handle (insert buffer thread) I/O thread 1 state: native aio handle (log thread) I/O thread 2 state: native aio handle (read thread) I/O thread 3 state: native aio handle (read thread) I/O thread 4 state: native aio handle (read thread) I/O thread 5 state: native aio handle (read thread) I/O thread 6 state: native aio handle (write thread) I/O thread 7 state: native aio handle (write thread) I/O thread 8 state: native aio handle (write thread) I/O thread 9 state: native aio handle (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 2892 OS file reads, 8721 OS file writes, 3506 OS fsyncs 0.00 reads/s, 0 avg bytes/read, 0.57 writes/s, 0.57 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 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 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 0 buffer(s) Hash table size 4441, node heap has 1 buffer(s) 1.43 hash searches/s, 1.29 non-hash searches/s --- LOG --- Log sequence number 23564903 Log flushed up to 23564903 Pages flushed up to 23564903 Last checkpoint at 23564894 0 pending log flushes, 0 pending chkp writes 2073 log i/o's done, 0.57 log i/o's/second ---------------------- BUFFER POOL AND MEMORY ---------------------- Total large memory allocated 33554432 Dictionary memory allocated 82632 Buffer pool size 1003 Free buffers 751 Database pages 250 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 2855, created 210, written 6093 0.00 reads/s, 0.00 creates/s, 0.00 writes/s Buffer pool hit rate 1000 / 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: 250, unzip_LRU len: 0 I/O sum[241]: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=5432, Main thread ID=5152, state: sleeping Number of rows inserted 0, updated 1472, deleted 0, read 10978 0.00 inserts/s, 0.00 updates/s, 0.00 deletes/s, 1.43 reads/s Number of system rows inserted 0, updated 0, deleted 0, read 997 0.00 inserts/s, 0.00 updates/s, 0.00 deletes/s, 0.00 reads/s ---------------------------- END OF INNODB MONITOR OUTPUT ============================