Storage engines

InnoDB

Supports transactions, row-level locking, and foreign keys

[ Variables | Buffer Pool | InnoDB Status ]

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2024-09-20 02:57:56 0x7fb7e80a5700 INNODB MONITOR OUTPUT
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Per second averages calculated from the last 51 seconds
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BACKGROUND THREAD
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srv_master_thread loops: 90 srv_active, 0 srv_shutdown, 638 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 605
OS WAIT ARRAY INFO: signal count 561
RW-shared spins 89, rounds 169, OS waits 80
RW-excl spins 146, rounds 1452, OS waits 30
RW-sx spins 1, rounds 30, OS waits 0
Spin rounds per wait: 1.90 RW-shared, 9.95 RW-excl, 30.00 RW-sx
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TRANSACTIONS
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Trx id counter 10526
Purge done for trx's n:o < 10526 undo n:o < 0 state: running but idle
History list length 23
LIST OF TRANSACTIONS FOR EACH SESSION:
---TRANSACTION 421902843783784, not started
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
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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
1467 OS file reads, 4791 OS file writes, 1650 OS fsyncs
0.00 reads/s, 0 avg bytes/read, 4.18 writes/s, 1.73 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)
496.23 hash searches/s, 314.80 non-hash searches/s
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LOG
---
Log sequence number          52403652
Log buffer assigned up to    52403652
Log buffer completed up to   52403652
Log written up to            52403652
Log flushed up to            52403652
Added dirty pages up to      52403652
Pages flushed up to          52402781
Last checkpoint at           52402781
1941 log i/o's done, 1.45 log i/o's/second
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BUFFER POOL AND MEMORY
----------------------
Total large memory allocated 137363456
Dictionary memory allocated 482906
Buffer pool size   8192
Free buffers       6616
Database pages     1552
Old database pages 552
Modified db pages  7
Pending reads      0
Pending writes: LRU 0, flush list 0, single page 0
Pages made young 739, not young 2326
0.00 youngs/s, 0.00 non-youngs/s
Pages read 1334, created 266, written 2520
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: 1552, unzip_LRU len: 0
I/O sum[122]: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 1055, updated 2004, deleted 1727, read 899520
2.71 inserts/s, 0.67 updates/s, 0.00 deletes/s, 1121.66 reads/s
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END OF INNODB MONITOR OUTPUT
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