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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 ]
===================================== 2026-08-28 03:52:13 0x4cc INNODB MONITOR OUTPUT ===================================== Per second averages calculated from the last 29 seconds ----------------- BACKGROUND THREAD ----------------- srv_master_thread loops: 10757 srv_active, 0 srv_shutdown, 29828 srv_idle srv_master_thread log flush and writes: 40585 ---------- SEMAPHORES ---------- OS WAIT ARRAY INFO: reservation count 9328 OS WAIT ARRAY INFO: signal count 8904 RW-shared spins 5156, rounds 150434, OS waits 4967 RW-excl spins 2696, rounds 14076, OS waits 131 RW-sx spins 2, rounds 60, OS waits 2 Spin rounds per wait: 29.18 RW-shared, 5.22 RW-excl, 30.00 RW-sx ------------ TRANSACTIONS ------------ Trx id counter 38678 Purge done for trx's n:o < 38678 undo n:o < 0 state: running but idle History list length 0 LIST OF TRANSACTIONS FOR EACH SESSION: ---TRANSACTION 284131811635416, not started 0 lock struct(s), heap size 1128, 0 row lock(s) ---TRANSACTION 284131811631248, 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 34655 OS file reads, 125538 OS file writes, 72454 OS fsyncs 0.41 reads/s, 16384 avg bytes/read, 0.76 writes/s, 0.17 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 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) 0.34 hash searches/s, 0.41 non-hash searches/s --- LOG --- Log sequence number 20257984 Log flushed up to 20257984 Pages flushed up to 20257984 Last checkpoint at 20257975 0 pending log flushes, 0 pending chkp writes 37717 log i/o's done, 0.10 log i/o's/second ---------------------- BUFFER POOL AND MEMORY ---------------------- Total large memory allocated 33554432 Dictionary memory allocated 272936 Buffer pool size 1003 Free buffers 727 Database pages 268 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 221, not young 99 0.00 youngs/s, 0.00 non-youngs/s Pages read 34619, created 1166, written 75598 0.41 reads/s, 0.00 creates/s, 0.62 writes/s Buffer pool hit rate 932 / 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: 268, unzip_LRU len: 0 I/O sum[30]: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=3428, Main thread ID=9988, state: sleeping Number of rows inserted 1615, updated 16246, deleted 18, read 422618 0.00 inserts/s, 0.00 updates/s, 0.00 deletes/s, 0.34 reads/s Number of system rows inserted 0, updated 0, deleted 0, read 50363 0.00 inserts/s, 0.00 updates/s, 0.00 deletes/s, 0.00 reads/s ---------------------------- END OF INNODB MONITOR OUTPUT ============================