Storage engines

InnoDB

Supports transactions, row-level locking, and foreign keys

[ Variables | Buffer Pool | InnoDB Status ]

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2024-09-20 02:49:58 0x7fb7e80a5700 INNODB MONITOR OUTPUT
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Per second averages calculated from the last 36 seconds
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BACKGROUND THREAD
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srv_master_thread loops: 48 srv_active, 0 srv_shutdown, 202 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 414
OS WAIT ARRAY INFO: signal count 394
RW-shared spins 69, rounds 129, OS waits 60
RW-excl spins 131, rounds 1151, OS waits 21
RW-sx spins 0, rounds 0, OS waits 0
Spin rounds per wait: 1.87 RW-shared, 8.79 RW-excl, 0.00 RW-sx
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TRANSACTIONS
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Trx id counter 10336
Purge done for trx's n:o < 10335 undo n:o < 0 state: running but idle
History list length 3
LIST OF TRANSACTIONS FOR EACH SESSION:
---TRANSACTION 421902843785528, not started
0 lock struct(s), heap size 1136, 0 row lock(s)
---TRANSACTION 421902843784656, not started
0 lock struct(s), heap size 1136, 0 row lock(s)
---TRANSACTION 421902843783784, not started
mysql tables in use 4, locked 0
0 lock struct(s), heap size 1136, 0 row lock(s)
---TRANSACTION 421902843782912, not started
0 lock struct(s), heap size 1136, 0 row lock(s)
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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
1461 OS file reads, 3273 OS file writes, 1012 OS fsyncs
0.00 reads/s, 0 avg bytes/read, 4.14 writes/s, 1.53 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 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 3 buffer(s)
Hash table size 34679, node heap has 5 buffer(s)
Hash table size 34679, node heap has 3 buffer(s)
Hash table size 34679, node heap has 3 buffer(s)
Hash table size 34679, node heap has 5 buffer(s)
873.92 hash searches/s, 477.60 non-hash searches/s
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LOG
---
Log sequence number          52200469
Log buffer assigned up to    52200469
Log buffer completed up to   52200469
Log written up to            52200469
Log flushed up to            52200469
Added dirty pages up to      52200469
Pages flushed up to          52200469
Last checkpoint at           52200469
1473 log i/o's done, 1.03 log i/o's/second
----------------------
BUFFER POOL AND MEMORY
----------------------
Total large memory allocated 137363456
Dictionary memory allocated 462754
Buffer pool size   8192
Free buffers       6659
Database pages     1509
Old database pages 537
Modified db pages  0
Pending reads      0
Pending writes: LRU 0, flush list 0, single page 0
Pages made young 558, not young 1989
0.00 youngs/s, 0.00 non-youngs/s
Pages read 1328, created 214, written 1618
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: 1509, unzip_LRU len: 0
I/O sum[110]:cur[0], unzip sum[0]:cur[0]
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ROW OPERATIONS
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0 queries inside InnoDB, 0 queries in queue
0 read views open inside InnoDB
Process ID=372, Main thread ID=140427358304000 , state=sleeping
Number of rows inserted 616, updated 1903, deleted 1622, read 414301
0.11 inserts/s, 0.00 updates/s, 0.14 deletes/s, 1206.88 reads/s
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END OF INNODB MONITOR OUTPUT
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