Storage engines

InnoDB

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

[ Variabel | Penampungan Penyangga | Status InnoDB ]

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2026-02-20 09:59:12 0x7fd766342700 INNODB MONITOR OUTPUT
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Per second averages calculated from the last 48 seconds
-----------------
BACKGROUND THREAD
-----------------
srv_master_thread loops: 14051 srv_active, 0 srv_shutdown, 21550 srv_idle
srv_master_thread log flush and writes: 35591
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SEMAPHORES
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OS WAIT ARRAY INFO: reservation count 41433
OS WAIT ARRAY INFO: signal count 32750
RW-shared spins 0, rounds 23283, OS waits 11623
RW-excl spins 0, rounds 3865, OS waits 132
RW-sx spins 2, rounds 60, OS waits 1
Spin rounds per wait: 23283.00 RW-shared, 3865.00 RW-excl, 30.00 RW-sx
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TRANSACTIONS
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Trx id counter 83185
Purge done for trx's n:o < 83185 undo n:o < 0 state: running but idle
History list length 0
LIST OF TRANSACTIONS FOR EACH SESSION:
---TRANSACTION 422038107210392, not started
0 lock struct(s), heap size 1136, 0 row lock(s)
---TRANSACTION 422038107206136, not started
0 lock struct(s), heap size 1136, 0 row lock(s)
---TRANSACTION 422038107201880, not started
0 lock struct(s), heap size 1136, 0 row lock(s)
---TRANSACTION 422038107197624, 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
862 OS file reads, 173089 OS file writes, 95823 OS fsyncs
0.00 reads/s, 0 avg bytes/read, 6.02 writes/s, 3.69 fsyncs/s
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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 1 buffer(s)
Hash table size 69257, node heap has 1 buffer(s)
Hash table size 69257, node heap has 1 buffer(s)
Hash table size 69257, node heap has 1 buffer(s)
Hash table size 69257, node heap has 1 buffer(s)
Hash table size 69257, node heap has 1 buffer(s)
Hash table size 69257, node heap has 1 buffer(s)
Hash table size 69257, node heap has 0 buffer(s)
3.25 hash searches/s, 0.29 non-hash searches/s
---
LOG
---
Log sequence number 39347758
Log flushed up to   39346395
Pages flushed up to 39344883
Last checkpoint at  39341495
0 pending log flushes, 0 pending chkp writes
60180 log i/o's done, 2.21 log i/o's/second
----------------------
BUFFER POOL AND MEMORY
----------------------
Total large memory allocated 285212672
Dictionary memory allocated 82832
Buffer pool size   16024
Free buffers       15164
Database pages     853
Old database pages 328
Modified db pages  56
Percent of dirty pages(LRU & free pages): 0.350
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 703, created 150, written 101074
0.00 reads/s, 0.00 creates/s, 3.29 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: 853, unzip_LRU len: 0
I/O sum[0]:cur[0], unzip sum[0]:cur[0]
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ROW OPERATIONS
--------------
0 queries inside InnoDB, 0 queries in queue
0 read views open inside InnoDB
Process ID=902, Main thread ID=140562560689920, state: sleeping
Number of rows inserted 1, updated 22567, deleted 0, read 128036
0.00 inserts/s, 0.85 updates/s, 0.00 deletes/s, 1.79 reads/s
Number of system rows inserted 0, updated 0, deleted 0, read 1273
0.00 inserts/s, 0.00 updates/s, 0.00 deletes/s, 0.00 reads/s
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END OF INNODB MONITOR OUTPUT
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