Storage engines

InnoDB

Supports transactions, row-level locking, and foreign keys

[ Variables | Buffer Pool | InnoDB Status ]

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2024-06-23 04:42:40 0x7f2fdc0a7700 INNODB MONITOR OUTPUT
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Per second averages calculated from the last 42 seconds
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BACKGROUND THREAD
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srv_master_thread loops: 161 srv_active, 0 srv_shutdown, 551 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 337
OS WAIT ARRAY INFO: signal count 353
RW-shared spins 31, rounds 34, OS waits 3
RW-excl spins 45, rounds 405, OS waits 15
RW-sx spins 0, rounds 0, OS waits 0
Spin rounds per wait: 1.10 RW-shared, 9.00 RW-excl, 0.00 RW-sx
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TRANSACTIONS
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Trx id counter 11351
Purge done for trx's n:o < 11350 undo n:o < 0 state: running but idle
History list length 83
LIST OF TRANSACTIONS FOR EACH SESSION:
---TRANSACTION 421318701591144, not started
0 lock struct(s), heap size 1136, 0 row lock(s)
---TRANSACTION 421318701590272, 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
1419 OS file reads, 8720 OS file writes, 1352 OS fsyncs
0.10 reads/s, 12544 avg bytes/read, 8.05 writes/s, 0.95 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 2 buffer(s)
Hash table size 34679, node heap has 2 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 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 8 buffer(s)
5284.73 hash searches/s, 3506.92 non-hash searches/s
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LOG
---
Log sequence number          51223737
Log buffer assigned up to    51223737
Log buffer completed up to   51223737
Log written up to            51223737
Log flushed up to            51223737
Added dirty pages up to      51223737
Pages flushed up to          51223737
Last checkpoint at           51223737
1255 log i/o's done, 0.85 log i/o's/second
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BUFFER POOL AND MEMORY
----------------------
Total large memory allocated 137363456
Dictionary memory allocated 841264
Buffer pool size   8192
Free buffers       6715
Database pages     1457
Old database pages 550
Modified db pages  0
Pending reads      0
Pending writes: LRU 0, flush list 0, single page 0
Pages made young 782, not young 620
0.00 youngs/s, 0.00 non-youngs/s
Pages read 1300, created 6289, written 4335
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: 1457, unzip_LRU len: 0
I/O sum[134]: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=366, Main thread ID=139843217602304 , state=sleeping
Number of rows inserted 1279051, updated 878, deleted 0, read 8017838
1560.34 inserts/s, 0.40 updates/s, 0.00 deletes/s, 6866.10 reads/s
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END OF INNODB MONITOR OUTPUT
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