المِعراض
Storage engines
InnoDB
Supports transactions, row-level locking, foreign keys and encryption for tables
[ متغيرات | Buffer Pool | وضع InnoDB ]
===================================== 2026-11-03 18:21:03 0x2434 INNODB MONITOR OUTPUT ===================================== Per second averages calculated from the last 57 seconds ----------------- BACKGROUND THREAD ----------------- srv_master_thread loops: 1076 srv_active, 0 srv_shutdown, 102053 srv_idle srv_master_thread log flush and writes: 103129 ---------- SEMAPHORES ---------- OS WAIT ARRAY INFO: reservation count 4537 OS WAIT ARRAY INFO: signal count 3395 RW-shared spins 2945, rounds 80573, OS waits 2646 RW-excl spins 1629, rounds 4540, OS waits 23 RW-sx spins 154, rounds 1236, OS waits 15 Spin rounds per wait: 27.36 RW-shared, 2.79 RW-excl, 8.03 RW-sx ------------ TRANSACTIONS ------------ Trx id counter 27271 Purge done for trx's n:o < 27271 undo n:o < 0 state: running but idle History list length 4 LIST OF TRANSACTIONS FOR EACH SESSION: ---TRANSACTION 283270779551960, not started 0 lock struct(s), heap size 1128, 0 row lock(s) ---TRANSACTION 283270779547792, 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 5107 OS file reads, 19242 OS file writes, 11040 OS fsyncs 0.60 reads/s, 16384 avg bytes/read, 2.86 writes/s, 2.05 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 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) 1.51 hash searches/s, 4.46 non-hash searches/s --- LOG --- Log sequence number 16331056 Log flushed up to 16331056 Pages flushed up to 16331056 Last checkpoint at 16331047 0 pending log flushes, 0 pending chkp writes 6881 log i/o's done, 1.25 log i/o's/second ---------------------- BUFFER POOL AND MEMORY ---------------------- Total large memory allocated 33554432 Dictionary memory allocated 230368 Buffer pool size 1003 Free buffers 740 Database pages 258 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 5015, created 547, written 11042 0.60 reads/s, 0.00 creates/s, 1.33 writes/s Buffer pool hit rate 961 / 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: 258, unzip_LRU len: 0 I/O sum[97]: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=468, Main thread ID=18512, state: sleeping Number of rows inserted 124, updated 652, deleted 8, read 19726 0.00 inserts/s, 0.25 updates/s, 0.00 deletes/s, 1.51 reads/s Number of system rows inserted 0, updated 0, deleted 0, read 596 0.00 inserts/s, 0.00 updates/s, 0.00 deletes/s, 0.00 reads/s ---------------------------- END OF INNODB MONITOR OUTPUT ============================