Storage engines
InnoDB
Supports transactions, row-level locking, foreign keys and encryption for tables
[ Variabel | Penampungan Penyangga | Status InnoDB ]
===================================== 2026-04-19 00:40:48 0x11f0 INNODB MONITOR OUTPUT ===================================== Per second averages calculated from the last 5 seconds ----------------- BACKGROUND THREAD ----------------- srv_master_thread loops: 328496 srv_active, 0 srv_shutdown, 104926 srv_idle srv_master_thread log flush and writes: 433419 ---------- SEMAPHORES ---------- OS WAIT ARRAY INFO: reservation count 14159260 OS WAIT ARRAY INFO: signal count 969823 RW-shared spins 115455, rounds 3447269, OS waits 106823 RW-excl spins 5586, rounds 170813, OS waits 5250 RW-sx spins 233, rounds 7042, OS waits 186 Spin rounds per wait: 29.86 RW-shared, 30.58 RW-excl, 30.22 RW-sx ------------ TRANSACTIONS ------------ Trx id counter 8639195 Purge done for trx's n:o < 8639193 undo n:o < 0 state: running History list length 4 LIST OF TRANSACTIONS FOR EACH SESSION: ---TRANSACTION 283852151378712, not started 0 lock struct(s), heap size 1128, 0 row lock(s) ---TRANSACTION 283852151374536, not started 0 lock struct(s), heap size 1128, 0 row lock(s) ---TRANSACTION 283852151370360, not started 0 lock struct(s), heap size 1128, 0 row lock(s) ---TRANSACTION 283852151366184, not started 0 lock struct(s), heap size 1128, 0 row lock(s) ---TRANSACTION 283852151362008, not started flushing log mysql tables in use 1, locked 1 0 lock struct(s), heap size 1128, 0 row lock(s) ---TRANSACTION 283852151357832, not started 0 lock struct(s), heap size 1128, 0 row lock(s) ---TRANSACTION 283852151353656, not started 0 lock struct(s), heap size 1128, 0 row lock(s) ---TRANSACTION 283852151349480, not started 0 lock struct(s), heap size 1128, 0 row lock(s) ---TRANSACTION 283852151345304, 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 451734 OS file reads, 4183872 OS file writes, 2317432 OS fsyncs 0 pending reads, 1 pending writes 1.40 reads/s, 16384 avg bytes/read, 9.80 writes/s, 5.80 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) 18.00 hash searches/s, 41.79 non-hash searches/s --- LOG --- Log sequence number 5566007771 Log flushed up to 5566006496 Pages flushed up to 5566002535 Last checkpoint at 5565999797 1 pending log flushes, 0 pending chkp writes 1206133 log i/o's done, 3.40 log i/o's/second ---------------------- BUFFER POOL AND MEMORY ---------------------- Total large memory allocated 33554432 Dictionary memory allocated 80128 Buffer pool size 1003 Free buffers 742 Database pages 259 Old database pages 0 Modified db pages 11 Percent of dirty pages(LRU & free pages): 1.098 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 451698, created 31506, written 2543063 1.40 reads/s, 0.20 creates/s, 5.40 writes/s Buffer pool hit rate 988 / 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: 259, unzip_LRU len: 0 I/O sum[593]: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=10912, Main thread ID=2480, state: sleeping Number of rows inserted 0, updated 631227, deleted 0, read 6732421 0.00 inserts/s, 1.60 updates/s, 0.00 deletes/s, 19.00 reads/s Number of system rows inserted 0, updated 0, deleted 0, read 1212 0.00 inserts/s, 0.00 updates/s, 0.00 deletes/s, 0.00 reads/s ---------------------------- END OF INNODB MONITOR OUTPUT ============================