Opslag-engines
InnoDB
Supports transactions, row-level locking, and foreign keys
[
Variabelen
|
Buffer Pool
|
InnoDB-status
]
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2025-09-17 22:42:48 0x7f7427299700 INNODB MONITOR OUTPUT
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Per second averages calculated from the last 49 seconds
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BACKGROUND THREAD
-----------------
srv_master_thread loops: 16 srv_active, 0 srv_shutdown, 703 srv_idle
srv_master_thread log flush and writes: 0
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SEMAPHORES
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OS WAIT ARRAY INFO: reservation count 38
OS WAIT ARRAY INFO: signal count 39
RW-shared spins 1, rounds 1, OS waits 0
RW-excl spins 0, rounds 0, OS waits 0
RW-sx spins 0, rounds 0, OS waits 0
Spin rounds per wait: 1.00 RW-shared, 0.00 RW-excl, 0.00 RW-sx
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TRANSACTIONS
------------
Trx id counter 9883
Purge done for trx's n:o < 9880 undo n:o < 0 state: running but idle
History list length 101
LIST OF TRANSACTIONS FOR EACH SESSION:
---TRANSACTION 421612476812752, not started
0 lock struct(s), heap size 1136, 0 row lock(s)
---TRANSACTION 421612476811880, not started flushing log
0 lock struct(s), heap size 1136, 0 row lock(s)
---TRANSACTION 421612476814496, not started
0 lock struct(s), heap size 1136, 0 row lock(s)
---TRANSACTION 421612476811008, 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: 1; buffer pool: 0
1460 OS file reads, 498 OS file writes, 196 OS fsyncs
0.00 reads/s, 0 avg bytes/read, 0.10 writes/s, 0.04 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 34679, node heap has 2 buffer(s)
Hash table size 34679, node heap has 2 buffer(s)
Hash table size 34679, node heap has 1 buffer(s)
Hash table size 34679, node heap has 1 buffer(s)
Hash table size 34679, node heap has 1 buffer(s)
Hash table size 34679, node heap has 0 buffer(s)
Hash table size 34679, node heap has 3 buffer(s)
Hash table size 34679, node heap has 7 buffer(s)
220.08 hash searches/s, 62.45 non-hash searches/s
---
LOG
---
Log sequence number 50970791
Log buffer assigned up to 50970791
Log buffer completed up to 50970791
Log written up to 50970791
Log flushed up to 50970388
Added dirty pages up to 50970018
Pages flushed up to 50970018
Last checkpoint at 50970018
142 log i/o's done, 0.10 log i/o's/second
----------------------
BUFFER POOL AND MEMORY
----------------------
Total large memory allocated 137363456
Dictionary memory allocated 671275
Buffer pool size 8192
Free buffers 6730
Database pages 1445
Old database pages 513
Modified db pages 6
Pending reads 0
Pending writes: LRU 0, flush list 0, single page 0
Pages made young 152, not young 1161
0.00 youngs/s, 0.00 non-youngs/s
Pages read 1301, created 147, written 294
0.00 reads/s, 0.00 creates/s, 0.00 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: 1445, 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
1 read views open inside InnoDB
Process ID=371, Main thread ID=140136992147200 , state=sleeping
Number of rows inserted 93, updated 368, deleted 0, read 474452
0.00 inserts/s, 0.04 updates/s, 0.00 deletes/s, 530.13 reads/s
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END OF INNODB MONITOR OUTPUT
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