Storage engines
InnoDB
Supports transactions, row-level locking, and foreign keys
[
Mainīgie
|
Buffer Pool
|
InnoDB statuss
]
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2024-09-20 00:33:30 0x7fddd00d8700 INNODB MONITOR OUTPUT
=====================================
Per second averages calculated from the last 7 seconds
-----------------
BACKGROUND THREAD
-----------------
srv_master_thread loops: 15 srv_active, 0 srv_shutdown, 147 srv_idle
srv_master_thread log flush and writes: 0
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SEMAPHORES
----------
OS WAIT ARRAY INFO: reservation count 50
OS WAIT ARRAY INFO: signal count 50
RW-shared spins 0, rounds 0, 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: 0.00 RW-shared, 0.00 RW-excl, 0.00 RW-sx
------------
TRANSACTIONS
------------
Trx id counter 9871
Purge done for trx's n:o < 9871 undo n:o < 0 state: running but idle
History list length 109
LIST OF TRANSACTIONS FOR EACH SESSION:
---TRANSACTION 422065639293240, not started
0 lock struct(s), heap size 1136, 0 row lock(s)
---TRANSACTION 422065639292368, not started
0 lock struct(s), heap size 1136, 0 row lock(s)
---TRANSACTION 422065639291496, not started
0 lock struct(s), heap size 1136, 0 row lock(s)
---TRANSACTION 422065639290624, 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
1317 OS file reads, 529 OS file writes, 174 OS fsyncs
0.00 reads/s, 0 avg bytes/read, 0.86 writes/s, 0.71 fsyncs/s
-------------------------------------
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 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 2 buffer(s)
Hash table size 34679, node heap has 2 buffer(s)
Hash table size 34679, node heap has 4 buffer(s)
1932.72 hash searches/s, 1242.82 non-hash searches/s
---
LOG
---
Log sequence number 50974151
Log buffer assigned up to 50974151
Log buffer completed up to 50974151
Log written up to 50974151
Log flushed up to 50974151
Added dirty pages up to 50974151
Pages flushed up to 50974151
Last checkpoint at 50974151
155 log i/o's done, 0.00 log i/o's/second
----------------------
BUFFER POOL AND MEMORY
----------------------
Total large memory allocated 137363456
Dictionary memory allocated 539292
Buffer pool size 8192
Free buffers 6821
Database pages 1356
Old database pages 482
Modified db pages 0
Pending reads 0
Pending writes: LRU 0, flush list 0, single page 0
Pages made young 119, not young 363
0.00 youngs/s, 0.00 non-youngs/s
Pages read 1212, created 156, written 314
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: 1356, unzip_LRU len: 0
I/O sum[107]:cur[0], unzip sum[0]:cur[0]
--------------
ROW OPERATIONS
--------------
0 queries inside InnoDB, 0 queries in queue
0 read views open inside InnoDB
Process ID=367, Main thread ID=140590153127680 , state=sleeping
Number of rows inserted 185, updated 376, deleted 0, read 379893
0.00 inserts/s, 0.00 updates/s, 0.00 deletes/s, 3144.84 reads/s
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END OF INNODB MONITOR OUTPUT
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