Storage engines

InnoDB

Supports transactions, row-level locking, foreign keys and encryption for tables

[ Variablat | Pellgu zbutës | Statusi InnoDB ]

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2025-11-14 03:54:28 0x7f3a902ef700 INNODB MONITOR OUTPUT
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Per second averages calculated from the last 39 seconds
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BACKGROUND THREAD
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srv_master_thread loops: 9516 srv_active, 0 srv_shutdown, 4335 srv_idle
srv_master_thread log flush and writes: 13851
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SEMAPHORES
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OS WAIT ARRAY INFO: reservation count 39695
OS WAIT ARRAY INFO: signal count 33008
RW-shared spins 0, rounds 7935, OS waits 3885
RW-excl spins 0, rounds 7603, OS waits 259
RW-sx spins 5, rounds 150, OS waits 5
Spin rounds per wait: 7935.00 RW-shared, 7603.00 RW-excl, 30.00 RW-sx
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TRANSACTIONS
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Trx id counter 99057
Purge done for trx's n:o < 99057 undo n:o < 0 state: running but idle
History list length 9
LIST OF TRANSACTIONS FOR EACH SESSION:
---TRANSACTION 421364481782264, not started
0 lock struct(s), heap size 1136, 0 row lock(s)
---TRANSACTION 421364481778008, not started
0 lock struct(s), heap size 1136, 0 row lock(s)
---TRANSACTION 421364481773752, not started
0 lock struct(s), heap size 1136, 0 row lock(s)
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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
864 OS file reads, 178132 OS file writes, 86599 OS fsyncs
0.00 reads/s, 0 avg bytes/read, 18.72 writes/s, 8.31 fsyncs/s
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INSERT BUFFER AND ADAPTIVE HASH INDEX
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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 1 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)
11.49 hash searches/s, 3.82 non-hash searches/s
---
LOG
---
Log sequence number 48925058
Log flushed up to   48924943
Pages flushed up to 48920504
Last checkpoint at  48908022
0 pending log flushes, 0 pending chkp writes
47937 log i/o's done, 4.69 log i/o's/second
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BUFFER POOL AND MEMORY
----------------------
Total large memory allocated 285212672
Dictionary memory allocated 130928
Buffer pool size   16024
Free buffers       15097
Database pages     859
Old database pages 329
Modified db pages  10
Percent of dirty pages(LRU & free pages): 0.063
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 705, created 154, written 114267
0.00 reads/s, 0.00 creates/s, 12.54 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: 859, unzip_LRU len: 0
I/O sum[0]:cur[0], unzip sum[0]:cur[0]
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ROW OPERATIONS
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0 queries inside InnoDB, 0 queries in queue
0 read views open inside InnoDB
Process ID=906, Main thread ID=139888737371904, state: sleeping
Number of rows inserted 6, updated 29752, deleted 1, read 2682785
0.00 inserts/s, 3.10 updates/s, 0.00 deletes/s, 7.13 reads/s
Number of system rows inserted 0, updated 0, deleted 0, read 8228
0.00 inserts/s, 0.00 updates/s, 0.00 deletes/s, 7.44 reads/s
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END OF INNODB MONITOR OUTPUT
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