Механізми зберігання
InnoDB
Supports transactions, row-level locking, and foreign keys
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Змінні
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Буферний пул
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Статус InnoDB
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2025-02-23 00:35:52 0x7f34a00a6700 INNODB MONITOR OUTPUT
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Per second averages calculated from the last 60 seconds
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BACKGROUND THREAD
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srv_master_thread loops: 20 srv_active, 0 srv_shutdown, 284 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 52
OS WAIT ARRAY INFO: signal count 52
RW-shared spins 0, rounds 0, OS waits 0
RW-excl spins 2, rounds 60, OS waits 2
RW-sx spins 0, rounds 0, OS waits 0
Spin rounds per wait: 0.00 RW-shared, 30.00 RW-excl, 0.00 RW-sx
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TRANSACTIONS
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Trx id counter 9876
Purge done for trx's n:o < 9876 undo n:o < 0 state: running but idle
History list length 95
LIST OF TRANSACTIONS FOR EACH SESSION:
---TRANSACTION 421339136924264, not started
0 lock struct(s), heap size 1136, 0 row lock(s)
---TRANSACTION 421339136923392, 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, 532 OS file writes, 236 OS fsyncs
0.02 reads/s, 16384 avg bytes/read, 0.77 writes/s, 0.53 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 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 6 buffer(s)
568.39 hash searches/s, 223.23 non-hash searches/s
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LOG
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Log sequence number 50970482
Log buffer assigned up to 50970482
Log buffer completed up to 50970482
Log written up to 50970482
Log flushed up to 50970482
Added dirty pages up to 50970482
Pages flushed up to 50970482
Last checkpoint at 50970482
148 log i/o's done, 0.23 log i/o's/second
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BUFFER POOL AND MEMORY
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Total large memory allocated 137363456
Dictionary memory allocated 633576
Buffer pool size 8192
Free buffers 6753
Database pages 1421
Old database pages 544
Modified db pages 0
Pending reads 0
Pending writes: LRU 0, flush list 0, single page 0
Pages made young 0, not young 0
0.00 youngs/s, 0.00 non-youngs/s
Pages read 1277, created 144, written 312
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: 1421, unzip_LRU len: 0
I/O sum[0]: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=139863652239104 , state=sleeping
Number of rows inserted 11, updated 362, deleted 0, read 404737
0.00 inserts/s, 0.10 updates/s, 0.00 deletes/s, 1377.14 reads/s
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END OF INNODB MONITOR OUTPUT
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