Storage engines

InnoDB

Supports transactions, row-level locking, and foreign keys

[ Variables | Buffer Pool | InnoDB Status ]

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2024-12-18 21:14:27 0x7fed48050700 INNODB MONITOR OUTPUT
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Per second averages calculated from the last 26 seconds
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BACKGROUND THREAD
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srv_master_thread loops: 61 srv_active, 0 srv_shutdown, 757 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 378
OS WAIT ARRAY INFO: signal count 365
RW-shared spins 44, rounds 77, OS waits 33
RW-excl spins 89, rounds 989, OS waits 24
RW-sx spins 0, rounds 0, OS waits 0
Spin rounds per wait: 1.75 RW-shared, 11.11 RW-excl, 0.00 RW-sx
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TRANSACTIONS
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Trx id counter 10941
Purge done for trx's n:o < 10941 undo n:o < 0 state: running but idle
History list length 22
LIST OF TRANSACTIONS FOR EACH SESSION:
---TRANSACTION 422132090628712, not started
0 lock struct(s), heap size 1136, 0 row lock(s)
---TRANSACTION 422132090627840, not started
0 lock struct(s), heap size 1136, 0 row lock(s)
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FILE I/O
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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
1298 OS file reads, 4568 OS file writes, 1865 OS fsyncs
0.00 reads/s, 0 avg bytes/read, 0.00 writes/s, 0.00 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 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 3 buffer(s)
Hash table size 34679, node heap has 6 buffer(s)
1039.46 hash searches/s, 145.30 non-hash searches/s
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LOG
---
Log sequence number          52677726
Log buffer assigned up to    52677726
Log buffer completed up to   52677726
Log written up to            52677726
Log flushed up to            52677726
Added dirty pages up to      52677726
Pages flushed up to          52677726
Last checkpoint at           52677726
2446 log i/o's done, 0.00 log i/o's/second
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BUFFER POOL AND MEMORY
----------------------
Total large memory allocated 137363456
Dictionary memory allocated 769605
Buffer pool size   8192
Free buffers       6569
Database pages     1607
Old database pages 573
Modified db pages  0
Pending reads      0
Pending writes: LRU 0, flush list 0, single page 0
Pages made young 172, not young 62
0.00 youngs/s, 0.00 non-youngs/s
Pages read 1179, created 437, written 1829
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: 1607, unzip_LRU len: 0
I/O sum[22]: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=362, Main thread ID=140656602183424 , state=sleeping
Number of rows inserted 1688, updated 1591, deleted 784, read 881243
0.00 inserts/s, 0.00 updates/s, 0.00 deletes/s, 1150.46 reads/s
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END OF INNODB MONITOR OUTPUT
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