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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 ]
===================================== 2026-04-25 11:45:10 0x76467c13b6c0 INNODB MONITOR OUTPUT ===================================== Per second averages calculated from the last 24 seconds ----------------- BACKGROUND THREAD ----------------- srv_master_thread loops: 15709 srv_active, 0 srv_shutdown, 10084 srv_idle srv_master_thread log flush and writes: 25793 ---------- SEMAPHORES ---------- OS WAIT ARRAY INFO: reservation count 1273213 OS WAIT ARRAY INFO: signal count 202310 RW-shared spins 15737, rounds 463490, OS waits 10233 RW-excl spins 150, rounds 4593, OS waits 151 RW-sx spins 0, rounds 0, OS waits 0 Spin rounds per wait: 29.45 RW-shared, 30.62 RW-excl, 0.00 RW-sx ------------ TRANSACTIONS ------------ Trx id counter 8654844 Purge done for trx's n:o < 8654844 undo n:o < 0 state: running but idle History list length 3 LIST OF TRANSACTIONS FOR EACH SESSION: ---TRANSACTION 411521314931192, not started 0 lock struct(s), heap size 1128, 0 row lock(s) ---TRANSACTION 411521314926976, not started 0 lock struct(s), heap size 1128, 0 row lock(s) ---TRANSACTION 411521314922760, not started 0 lock struct(s), heap size 1128, 0 row lock(s) ---TRANSACTION 411521314918544, 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 522464 OS file reads, 167149 OS file writes, 102435 OS fsyncs 2.62 reads/s, 16384 avg bytes/read, 5.21 writes/s, 3.62 fsyncs/s ------------------------------------- INSERT BUFFER AND ADAPTIVE HASH INDEX ------------------------------------- Ibuf: size 1, free list len 368, seg size 370, 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 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 0 buffer(s) 10.12 hash searches/s, 12.92 non-hash searches/s --- LOG --- Log sequence number 4051762610 Log flushed up to 4051762610 Pages flushed up to 4051762610 Last checkpoint at 4051761429 0 pending log flushes, 0 pending chkp writes 52622 log i/o's done, 1.71 log i/o's/second ---------------------- BUFFER POOL AND MEMORY ---------------------- Total large memory allocated 33554432 Dictionary memory allocated 400160 Buffer pool size 1003 Free buffers 735 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 741, not young 14336029 0.00 youngs/s, 0.00 non-youngs/s Pages read 522294, created 1287, written 95820 2.62 reads/s, 0.00 creates/s, 2.79 writes/s Buffer pool hit rate 998 / 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[229]:cur[3], unzip sum[0]:cur[0] -------------- ROW OPERATIONS -------------- 0 queries inside InnoDB, 0 queries in queue 0 read views open inside InnoDB Process ID=1153, Main thread ID=130045142091456, state: sleeping Number of rows inserted 0, updated 21780, deleted 0, read 879724354 0.00 inserts/s, 0.54 updates/s, 0.00 deletes/s, 16622.72 reads/s Number of system rows inserted 0, updated 0, deleted 0, read 1126 0.00 inserts/s, 0.00 updates/s, 0.00 deletes/s, 0.00 reads/s ---------------------------- END OF INNODB MONITOR OUTPUT ============================