Storage engines

InnoDB

Supports transactions, row-level locking, foreign keys and encryption for tables

[ Variables | Buffer Pool | InnoDB Status ]

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2024-11-15 08:12:23 0x7f5ea055c700 INNODB MONITOR OUTPUT
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Per second averages calculated from the last 14 seconds
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BACKGROUND THREAD
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srv_master_thread loops: 362 srv_active, 0 srv_shutdown, 11066 srv_idle
srv_master_thread log flush and writes: 11428
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SEMAPHORES
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OS WAIT ARRAY INFO: reservation count 2722
OS WAIT ARRAY INFO: signal count 2171
RW-shared spins 0, rounds 1449, OS waits 723
RW-excl spins 0, rounds 185, OS waits 6
RW-sx spins 6, rounds 68, OS waits 1
Spin rounds per wait: 1449.00 RW-shared, 185.00 RW-excl, 11.33 RW-sx
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TRANSACTIONS
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Trx id counter 38417
Purge done for trx's n:o < 38417 undo n:o < 0 state: running but idle
History list length 7
LIST OF TRANSACTIONS FOR EACH SESSION:
---TRANSACTION 421519370355192, not started
0 lock struct(s), heap size 1136, 0 row lock(s)
---TRANSACTION 421519370350936, not started
0 lock struct(s), heap size 1136, 0 row lock(s)
---TRANSACTION 421519370346680, 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
773 OS file reads, 4801 OS file writes, 3263 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 69257, node heap has 0 buffer(s)
Hash table size 69257, node heap has 1 buffer(s)
Hash table size 69257, node heap has 0 buffer(s)
Hash table size 69257, node heap has 0 buffer(s)
Hash table size 69257, node heap has 1 buffer(s)
Hash table size 69257, node heap has 1 buffer(s)
Hash table size 69257, node heap has 0 buffer(s)
Hash table size 69257, node heap has 0 buffer(s)
0.00 hash searches/s, 0.07 non-hash searches/s
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LOG
---
Log sequence number 9750618
Log flushed up to   9750618
Pages flushed up to 9750618
Last checkpoint at  9750609
0 pending log flushes, 0 pending chkp writes
2167 log i/o's done, 0.00 log i/o's/second
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BUFFER POOL AND MEMORY
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Total large memory allocated 285212672
Dictionary memory allocated 88176
Buffer pool size   16024
Free buffers       15256
Database pages     765
Old database pages 297
Modified db pages  0
Percent of dirty pages(LRU & free pages): 0.000
Max dirty pages percent: 75.000
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 614, created 151, written 2274
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: 765, 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=904, Main thread ID=140043624630016, state: sleeping
Number of rows inserted 3, updated 362, deleted 0, read 49945
0.00 inserts/s, 0.00 updates/s, 0.00 deletes/s, 0.07 reads/s
Number of system rows inserted 0, updated 0, deleted 0, read 884
0.00 inserts/s, 0.00 updates/s, 0.00 deletes/s, 0.00 reads/s
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END OF INNODB MONITOR OUTPUT
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