Μηχανές αποθήκευσης

InnoDB

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

[ Μεταβλητές | Buffer Pool | Κατάσταση InnoDB ]

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2026-08-04 16:22:09 0x2b78 INNODB MONITOR OUTPUT
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Per second averages calculated from the last 54 seconds
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BACKGROUND THREAD
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srv_master_thread loops: 7783 srv_active, 0 srv_shutdown, 72199 srv_idle
srv_master_thread log flush and writes: 79982
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SEMAPHORES
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OS WAIT ARRAY INFO: reservation count 129055
OS WAIT ARRAY INFO: signal count 12644
RW-shared spins 2419, rounds 72343, OS waits 2222
RW-excl spins 78, rounds 2386, OS waits 77
RW-sx spins 1, rounds 30, OS waits 1
Spin rounds per wait: 29.91 RW-shared, 30.59 RW-excl, 30.00 RW-sx
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TRANSACTIONS
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Trx id counter 27748
Purge done for trx's n:o < 27748 undo n:o < 0 state: running
History list length 23
LIST OF TRANSACTIONS FOR EACH SESSION:
---TRANSACTION 284270503309672, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 284270503301336, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 284270503297168, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 284270503305504, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
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FILE I/O
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I/O thread 0 state: native aio handle (insert buffer thread)
I/O thread 1 state: native aio handle (log thread)
I/O thread 2 state: native aio handle (read thread)
I/O thread 3 state: native aio handle (read thread)
I/O thread 4 state: native aio handle (read thread)
I/O thread 5 state: native aio handle (read thread)
I/O thread 6 state: native aio handle (write thread)
I/O thread 7 state: native aio handle (write thread)
I/O thread 8 state: native aio handle (write thread)
I/O thread 9 state: native aio handle (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
23633 OS file reads, 82845 OS file writes, 47871 OS fsyncs
1.81 reads/s, 16384 avg bytes/read, 5.50 writes/s, 3.31 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 4441, node heap has 1 buffer(s)
Hash table size 4441, node heap has 0 buffer(s)
Hash table size 4441, node heap has 0 buffer(s)
Hash table size 4441, node heap has 1 buffer(s)
Hash table size 4441, node heap has 1 buffer(s)
Hash table size 4441, node heap has 1 buffer(s)
Hash table size 4441, node heap has 1 buffer(s)
Hash table size 4441, node heap has 1 buffer(s)
8.02 hash searches/s, 22.68 non-hash searches/s
---
LOG
---
Log sequence number 15767359
Log flushed up to   15767359
Pages flushed up to 15766048
Last checkpoint at  15748331
0 pending log flushes, 0 pending chkp writes
23751 log i/o's done, 1.78 log i/o's/second
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BUFFER POOL AND MEMORY
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Total large memory allocated 33554432
Dictionary memory allocated 105168
Buffer pool size   1003
Free buffers       740
Database pages     257
Old database pages 0
Modified db pages  3
Percent of dirty pages(LRU & free pages): 0.301
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 23585, created 539, written 50637
1.81 reads/s, 0.00 creates/s, 3.20 writes/s
Buffer pool hit rate 974 / 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: 257, unzip_LRU len: 0
I/O sum[267]:cur[4], 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=3156, Main thread ID=3344, state: sleeping
Number of rows inserted 77, updated 11015, deleted 0, read 21512976
0.00 inserts/s, 0.94 updates/s, 0.00 deletes/s, 96.46 reads/s
Number of system rows inserted 0, updated 0, deleted 0, read 13171
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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