Storage engines
InnoDB
Supports transactions, row-level locking, and foreign keys
[
Muuttujat
|
Puskurivaranto
|
InnoDB:n tila
]
=====================================
2024-09-19 23:54:40 0x7fe080083700 INNODB MONITOR OUTPUT
=====================================
Per second averages calculated from the last 43 seconds
-----------------
BACKGROUND THREAD
-----------------
srv_master_thread loops: 60 srv_active, 0 srv_shutdown, 471 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 137
OS WAIT ARRAY INFO: signal count 137
RW-shared spins 2, rounds 3, OS waits 1
RW-excl spins 5, rounds 150, OS waits 5
RW-sx spins 0, rounds 0, OS waits 0
Spin rounds per wait: 1.50 RW-shared, 30.00 RW-excl, 0.00 RW-sx
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TRANSACTIONS
------------
Trx id counter 10303
Purge done for trx's n:o < 10302 undo n:o < 0 state: running but idle
History list length 12
LIST OF TRANSACTIONS FOR EACH SESSION:
---TRANSACTION 422077715208808, not started
0 lock struct(s), heap size 1136, 0 row lock(s)
---TRANSACTION 422077715207936, 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
1612 OS file reads, 2215 OS file writes, 824 OS fsyncs
0.02 reads/s, 16384 avg bytes/read, 0.21 writes/s, 0.16 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 34679, node heap has 2 buffer(s)
Hash table size 34679, node heap has 3 buffer(s)
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 5 buffer(s)
Hash table size 34679, node heap has 7 buffer(s)
675.03 hash searches/s, 197.11 non-hash searches/s
---
LOG
---
Log sequence number 51132664
Log buffer assigned up to 51132664
Log buffer completed up to 51132664
Log written up to 51132664
Log flushed up to 51132664
Added dirty pages up to 51132664
Pages flushed up to 51132664
Last checkpoint at 51132664
657 log i/o's done, 0.07 log i/o's/second
----------------------
BUFFER POOL AND MEMORY
----------------------
Total large memory allocated 137363456
Dictionary memory allocated 873578
Buffer pool size 8192
Free buffers 6564
Database pages 1605
Old database pages 572
Modified db pages 0
Pending reads 0
Pending writes: LRU 0, flush list 0, single page 0
Pages made young 682, not young 314
0.00 youngs/s, 0.00 non-youngs/s
Pages read 1437, created 269, written 1337
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: 1605, unzip_LRU len: 0
I/O sum[5]: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=369, Main thread ID=140602231412480 , state=sleeping
Number of rows inserted 18308, updated 549, deleted 0, read 1830808
0.00 inserts/s, 0.02 updates/s, 0.00 deletes/s, 1684.91 reads/s
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END OF INNODB MONITOR OUTPUT
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