Storage engines
InnoDB
Supports transactions, row-level locking, and foreign keys
[
Variables
|
Buffer Pool
|
InnoDB Status
]
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2024-09-20 01:06:37 0x7f9e3c062700 INNODB MONITOR OUTPUT
=====================================
Per second averages calculated from the last 46 seconds
-----------------
BACKGROUND THREAD
-----------------
srv_master_thread loops: 29 srv_active, 0 srv_shutdown, 321 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 41
OS WAIT ARRAY INFO: signal count 41
RW-shared spins 3, rounds 5, OS waits 2
RW-excl spins 3, rounds 60, OS waits 2
RW-sx spins 0, rounds 0, OS waits 0
Spin rounds per wait: 1.67 RW-shared, 20.00 RW-excl, 0.00 RW-sx
------------
TRANSACTIONS
------------
Trx id counter 9885
Purge done for trx's n:o < 9883 undo n:o < 0 state: running but idle
History list length 9
LIST OF TRANSACTIONS FOR EACH SESSION:
---TRANSACTION 421792732121704, not started
0 lock struct(s), heap size 1136, 0 row lock(s)
---TRANSACTION 421792732120832, 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
1311 OS file reads, 1012 OS file writes, 356 OS fsyncs
0.07 reads/s, 16384 avg bytes/read, 0.33 writes/s, 0.26 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 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 1 buffer(s)
Hash table size 34679, node heap has 2 buffer(s)
Hash table size 34679, node heap has 6 buffer(s)
1102.82 hash searches/s, 691.96 non-hash searches/s
---
LOG
---
Log sequence number 51047818
Log buffer assigned up to 51047818
Log buffer completed up to 51047818
Log written up to 51047818
Log flushed up to 51047818
Added dirty pages up to 51047818
Pages flushed up to 51047818
Last checkpoint at 51047818
243 log i/o's done, 0.11 log i/o's/second
----------------------
BUFFER POOL AND MEMORY
----------------------
Total large memory allocated 137363456
Dictionary memory allocated 611399
Buffer pool size 8192
Free buffers 6818
Database pages 1361
Old database pages 482
Modified db pages 0
Pending reads 0
Pending writes: LRU 0, flush list 0, single page 0
Pages made young 332, not young 364
0.00 youngs/s, 0.00 non-youngs/s
Pages read 1200, created 179, written 656
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: 1361, unzip_LRU len: 0
I/O sum[9]: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=366, Main thread ID=140317246555904 , state=sleeping
Number of rows inserted 353, updated 413, deleted 0, read 468407
0.02 inserts/s, 0.00 updates/s, 0.00 deletes/s, 1618.62 reads/s
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END OF INNODB MONITOR OUTPUT
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