Механізми зберігання
InnoDB
Supports transactions, row-level locking, and foreign keys
[
Змінні
|
Буферний пул
|
Статус InnoDB
]
=====================================
2024-09-19 20:47:24 0x7f06640a6700 INNODB MONITOR OUTPUT
=====================================
Per second averages calculated from the last 36 seconds
-----------------
BACKGROUND THREAD
-----------------
srv_master_thread loops: 14 srv_active, 0 srv_shutdown, 81 srv_idle
srv_master_thread log flush and writes: 0
----------
SEMAPHORES
----------
OS WAIT ARRAY INFO: reservation count 33
OS WAIT ARRAY INFO: signal count 33
RW-shared spins 1, rounds 1, OS waits 0
RW-excl spins 4, rounds 120, OS waits 4
RW-sx spins 0, rounds 0, OS waits 0
Spin rounds per wait: 1.00 RW-shared, 30.00 RW-excl, 0.00 RW-sx
------------
TRANSACTIONS
------------
Trx id counter 9853
Purge done for trx's n:o < 9852 undo n:o < 0 state: running but idle
History list length 84
LIST OF TRANSACTIONS FOR EACH SESSION:
---TRANSACTION 421140555193808, not started
0 lock struct(s), heap size 1136, 0 row lock(s)
---TRANSACTION 421140555192936, not started
0 lock struct(s), heap size 1136, 0 row lock(s)
---TRANSACTION 421140555192064, 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
1266 OS file reads, 538 OS file writes, 227 OS fsyncs
0.69 reads/s, 14540 avg bytes/read, 5.31 writes/s, 3.11 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 1 buffer(s)
Hash table size 34679, node heap has 2 buffer(s)
Hash table size 34679, node heap has 0 buffer(s)
Hash table size 34679, node heap has 0 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 5 buffer(s)
1050.05 hash searches/s, 507.60 non-hash searches/s
---
LOG
---
Log sequence number 50971858
Log buffer assigned up to 50971858
Log buffer completed up to 50971858
Log written up to 50971858
Log flushed up to 50971858
Added dirty pages up to 50971858
Pages flushed up to 50971858
Last checkpoint at 50971858
157 log i/o's done, 2.14 log i/o's/second
----------------------
BUFFER POOL AND MEMORY
----------------------
Total large memory allocated 137363456
Dictionary memory allocated 587033
Buffer pool size 8192
Free buffers 6870
Database pages 1309
Old database pages 466
Modified db pages 0
Pending reads 0
Pending writes: LRU 0, flush list 0, single page 0
Pages made young 70, not young 66
0.00 youngs/s, 0.00 non-youngs/s
Pages read 1165, created 147, written 310
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: 1309, unzip_LRU len: 0
I/O sum[56]: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=378, Main thread ID=139665068717824 , state=sleeping
Number of rows inserted 74, updated 351, deleted 0, read 273877
1.89 inserts/s, 0.39 updates/s, 0.00 deletes/s, 2280.55 reads/s
----------------------------
END OF INNODB MONITOR OUTPUT
============================
