Supports transactions, row-level locking, foreign keys and encryption for tables
===================================== 2025-09-19 10:33:55 0x7f03505ae700 INNODB MONITOR OUTPUT ===================================== Per second averages calculated from the last 30 seconds ----------------- BACKGROUND THREAD ----------------- srv_master_thread loops: 8517 srv_active, 0 srv_shutdown, 29209 srv_idle srv_master_thread log flush and writes: 37722 ---------- SEMAPHORES ---------- OS WAIT ARRAY INFO: reservation count 26923 OS WAIT ARRAY INFO: signal count 21841 RW-shared spins 0, rounds 22034, OS waits 11012 RW-excl spins 0, rounds 1231, OS waits 42 RW-sx spins 1, rounds 30, OS waits 1 Spin rounds per wait: 22034.00 RW-shared, 1231.00 RW-excl, 30.00 RW-sx ------------ TRANSACTIONS ------------ Trx id counter 58173 Purge done for trx's n:o < 58173 undo n:o < 0 state: running History list length 18 LIST OF TRANSACTIONS FOR EACH SESSION: ---TRANSACTION 421127209018008, not started 0 lock struct(s), heap size 1136, 0 row lock(s) ---TRANSACTION 421127209013752, not started 0 lock struct(s), heap size 1136, 0 row lock(s) ---TRANSACTION 421127209009496, not started 0 lock struct(s), heap size 1136, 0 row lock(s) ---TRANSACTION 421127209005240, not started 0 lock struct(s), heap size 1136, 0 row lock(s) -------- FILE I/O -------- I/O thread 0 state: waiting for completed aio requests (insert buffer thread) I/O thread 1 state: waiting for completed aio requests (log thread) I/O thread 2 state: waiting for completed aio requests (read thread) I/O thread 3 state: waiting for completed aio requests (read thread) I/O thread 4 state: waiting for completed aio requests (read thread) I/O thread 5 state: waiting for completed aio requests (read thread) I/O thread 6 state: waiting for completed aio requests (write thread) I/O thread 7 state: waiting for completed aio requests (write thread) I/O thread 8 state: waiting for completed aio requests (write thread) I/O thread 9 state: waiting for completed aio requests (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: 0 962 OS file reads, 98463 OS file writes, 65094 OS fsyncs 0.00 reads/s, 0 avg bytes/read, 2.37 writes/s, 1.97 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 69257, node heap has 2 buffer(s) Hash table size 69257, node heap has 10 buffer(s) Hash table size 69257, node heap has 2 buffer(s) Hash table size 69257, node heap has 25 buffer(s) Hash table size 69257, node heap has 1 buffer(s) Hash table size 69257, node heap has 3 buffer(s) Hash table size 69257, node heap has 26 buffer(s) Hash table size 69257, node heap has 0 buffer(s) 0.70 hash searches/s, 1.20 non-hash searches/s --- LOG --- Log sequence number 23242695 Log flushed up to 23242695 Pages flushed up to 23241396 Last checkpoint at 23241387 0 pending log flushes, 0 pending chkp writes 40977 log i/o's done, 1.30 log i/o's/second ---------------------- BUFFER POOL AND MEMORY ---------------------- Total large memory allocated 285212672 Dictionary memory allocated 128256 Buffer pool size 16024 Free buffers 15006 Database pages 949 Old database pages 370 Modified db pages 3 Percent of dirty pages(LRU & free pages): 0.019 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 803, created 146, written 49466 0.00 reads/s, 0.00 creates/s, 0.87 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: 949, unzip_LRU len: 0 I/O sum[0]: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=905, Main thread ID=139651457214208, state: sleeping Number of rows inserted 2, updated 10334, deleted 0, read 3695284 0.00 inserts/s, 0.33 updates/s, 0.00 deletes/s, 0.77 reads/s Number of system rows inserted 0, updated 0, deleted 0, read 10478 0.00 inserts/s, 0.00 updates/s, 0.00 deletes/s, 0.00 reads/s ---------------------------- END OF INNODB MONITOR OUTPUT ============================