Storage engines

InnoDB

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

[ Variables | Buffer Pool | InnoDB Status ]

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2026-04-17 00:40:13 0xa008 INNODB MONITOR OUTPUT
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Per second averages calculated from the last 52 seconds
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BACKGROUND THREAD
-----------------
srv_master_thread loops: 0 srv_active, 0 srv_shutdown, 45449 srv_idle
srv_master_thread log flush and writes: 45449
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SEMAPHORES
----------
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TRANSACTIONS
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Trx id counter 391932
Purge done for trx's n:o < 391920 undo n:o < 0 state: running
History list length 6
LIST OF TRANSACTIONS FOR EACH SESSION:
---TRANSACTION (0000020B9636A5C0), not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION (0000020B96372E40), not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION (0000020B9636E4C0), not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION (0000020B96369B40), not started
0 lock struct(s), heap size 1128, 0 row lock(s)
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FILE I/O
--------
Pending flushes (fsync): 0
119482 OS file reads, 110871 OS file writes, 63431 OS fsyncs
4.19 reads/s, 12588 avg bytes/read, 3.96 writes/s, 2.48 fsyncs/s
---
LOG
---
Log sequence number 255282840
Log flushed up to   255282840
Pages flushed up to 255246049
Last checkpoint at  255246049
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BUFFER POOL AND MEMORY
----------------------
Total large memory allocated 33554432
Dictionary memory allocated 1330648
Buffer pool size   1008
Free buffers       762
Database pages     231
Old database pages 0
Modified db pages  83
Percent of dirty pages(LRU & free pages): 8.350
Max dirty pages percent: 90.000
Pending reads 0
Pending writes: LRU 0, flush list 0
Pages made young 0, not young 0
0.00 youngs/s, 0.00 non-youngs/s
Pages read 118485, created 24291, written 109688
4.19 reads/s, 1.31 creates/s, 3.92 writes/s
Buffer pool hit rate 975 / 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: 231, unzip_LRU len: 45
I/O sum[411]:cur[12], unzip sum[95]:cur[1]
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ROW OPERATIONS
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0 read views open inside InnoDB
state: sleeping
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END OF INNODB MONITOR OUTPUT
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