Storage engines

InnoDB

Supports transactions, row-level locking, and foreign keys

[ Променливи | Buffer Pool | InnoDB Състояние ]

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2025-05-30 11:19:30 0x7f4c9c0e2700 INNODB MONITOR OUTPUT
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Per second averages calculated from the last 38 seconds
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BACKGROUND THREAD
-----------------
srv_master_thread loops: 33 srv_active, 0 srv_shutdown, 187 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 67
OS WAIT ARRAY INFO: signal count 67
RW-shared spins 1, rounds 1, OS waits 0
RW-excl spins 4, rounds 120, OS waits 4
RW-sx spins 0, rounds 0, OS waits 0
Spin rounds per wait: 1.00 RW-shared, 30.00 RW-excl, 0.00 RW-sx
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TRANSACTIONS
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Trx id counter 9904
Purge done for trx's n:o < 9900 undo n:o < 0 state: running but idle
History list length 22
LIST OF TRANSACTIONS FOR EACH SESSION:
---TRANSACTION 421442569132648, not started
0 lock struct(s), heap size 1136, 0 row lock(s)
---TRANSACTION 421442569131776, not started
0 lock struct(s), heap size 1136, 0 row lock(s)
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FILE I/O
--------
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
1367 OS file reads, 896 OS file writes, 375 OS fsyncs
0.79 reads/s, 13312 avg bytes/read, 2.24 writes/s, 1.66 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 8 buffer(s)
Hash table size 34679, node heap has 0 buffer(s)
Hash table size 34679, node heap has 25 buffer(s)
Hash table size 34679, node heap has 1 buffer(s)
Hash table size 34679, node heap has 4 buffer(s)
Hash table size 34679, node heap has 30 buffer(s)
835.53 hash searches/s, 362.65 non-hash searches/s
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LOG
---
Log sequence number          50999519
Log buffer assigned up to    50999519
Log buffer completed up to   50999519
Log written up to            50999519
Log flushed up to            50999519
Added dirty pages up to      50999519
Pages flushed up to          50999519
Last checkpoint at           50999519
223 log i/o's done, 0.82 log i/o's/second
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BUFFER POOL AND MEMORY
----------------------
Total large memory allocated 137363456
Dictionary memory allocated 668016
Buffer pool size   8192
Free buffers       6740
Database pages     1381
Old database pages 490
Modified db pages  0
Pending reads      0
Pending writes: LRU 0, flush list 0, single page 0
Pages made young 345, not young 590
0.00 youngs/s, 0.00 non-youngs/s
Pages read 1232, created 155, written 557
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: 1381, unzip_LRU len: 0
I/O sum[261]: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=139967083783936 , state=sleeping
Number of rows inserted 171, updated 385, deleted 0, read 299361
0.16 inserts/s, 0.21 updates/s, 0.00 deletes/s, 1362.52 reads/s
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END OF INNODB MONITOR OUTPUT
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