Storage engines

InnoDB

Supports transactions, row-level locking, and foreign keys

[ Variables | Buffer Pool | InnoDB Status ]

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2024-09-19 20:59:47 0x7f06640ee700 INNODB MONITOR OUTPUT
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Per second averages calculated from the last 10 seconds
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BACKGROUND THREAD
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srv_master_thread loops: 79 srv_active, 0 srv_shutdown, 760 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 586
OS WAIT ARRAY INFO: signal count 550
RW-shared spins 62, rounds 113, OS waits 51
RW-excl spins 144, rounds 1322, OS waits 28
RW-sx spins 0, rounds 0, OS waits 0
Spin rounds per wait: 1.82 RW-shared, 9.18 RW-excl, 0.00 RW-sx
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TRANSACTIONS
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Trx id counter 10656
Purge done for trx's n:o < 10650 undo n:o < 0 state: running but idle
History list length 4
LIST OF TRANSACTIONS FOR EACH SESSION:
---TRANSACTION 421140555193808, 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)
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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
1555 OS file reads, 3910 OS file writes, 1291 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 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)
1172.28 hash searches/s, 764.82 non-hash searches/s
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LOG
---
Log sequence number          52194677
Log buffer assigned up to    52194677
Log buffer completed up to   52194677
Log written up to            52194677
Log flushed up to            52194677
Added dirty pages up to      52194677
Pages flushed up to          52194677
Last checkpoint at           52194677
1663 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 477881
Buffer pool size   8192
Free buffers       6581
Database pages     1587
Old database pages 565
Modified db pages  0
Pending reads      0
Pending writes: LRU 0, flush list 0, single page 0
Pages made young 799, not young 2508
0.00 youngs/s, 0.00 non-youngs/s
Pages read 1414, created 221, written 2013
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: 1587, unzip_LRU len: 0
I/O sum[7]: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
1 read views open inside InnoDB
Process ID=378, Main thread ID=139665068717824 , state=sleeping
Number of rows inserted 835, updated 1926, deleted 1588, read 1605658
0.00 inserts/s, 0.00 updates/s, 0.00 deletes/s, 1997.60 reads/s
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END OF INNODB MONITOR OUTPUT
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