Storage engines

InnoDB

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

[ Variabel | Penampungan Penyangga | Status InnoDB ]

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2025-12-20 02:00:25 0x7017ec0d36c0 INNODB MONITOR OUTPUT
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Per second averages calculated from the last 50 seconds
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BACKGROUND THREAD
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srv_master_thread loops: 167 srv_active, 0 srv_shutdown, 284948 srv_idle
srv_master_thread log flush and writes: 285108
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SEMAPHORES
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OS WAIT ARRAY INFO: reservation count 2417
OS WAIT ARRAY INFO: signal count 784
RW-shared spins 200, rounds 5904, OS waits 194
RW-excl spins 25, rounds 842, OS waits 27
RW-sx spins 0, rounds 0, OS waits 0
Spin rounds per wait: 29.52 RW-shared, 33.68 RW-excl, 0.00 RW-sx
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TRANSACTIONS
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Trx id counter 214342
Purge done for trx's n:o < 214342 undo n:o < 0 state: running
History list length 2
LIST OF TRANSACTIONS FOR EACH SESSION:
---TRANSACTION 404723033911680, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 404723033907464, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 404723033903248, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
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FILE I/O
--------
I/O thread 0 state: waiting for i/o request (insert buffer thread)
I/O thread 1 state: waiting for i/o request (log thread)
I/O thread 2 state: waiting for i/o request (read thread)
I/O thread 3 state: waiting for i/o request (read thread)
I/O thread 4 state: waiting for i/o request (read thread)
I/O thread 5 state: waiting for i/o request (read thread)
I/O thread 6 state: waiting for i/o request (write thread)
I/O thread 7 state: waiting for i/o request (write thread)
I/O thread 8 state: waiting for i/o request (write thread)
I/O thread 9 state: waiting for i/o request (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
4340 OS file reads, 2584 OS file writes, 1314 OS fsyncs
0.22 reads/s, 16384 avg bytes/read, 0.94 writes/s, 0.58 fsyncs/s
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INSERT BUFFER AND ADAPTIVE HASH INDEX
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Ibuf: size 1, free list len 12, seg size 14, 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 0 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 0 buffer(s)
Hash table size 4441, node heap has 0 buffer(s)
Hash table size 4441, node heap has 1 buffer(s)
1.10 hash searches/s, 3.18 non-hash searches/s
---
LOG
---
Log sequence number 13264246875
Log flushed up to   13264246875
Pages flushed up to 13264246875
Last checkpoint at  13264246866
0 pending log flushes, 0 pending chkp writes
846 log i/o's done, 0.32 log i/o's/second
----------------------
BUFFER POOL AND MEMORY
----------------------
Total large memory allocated 33554432
Dictionary memory allocated 90280
Buffer pool size   1003
Free buffers       744
Database pages     256
Old database pages 0
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 22, not young 225777
0.00 youngs/s, 0.00 non-youngs/s
Pages read 4300, created 175, written 1573
0.22 reads/s, 0.00 creates/s, 0.52 writes/s
Buffer pool hit rate 976 / 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: 256, unzip_LRU len: 0
I/O sum[37]: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=1103, Main thread ID=123247657940672, state: sleeping
Number of rows inserted 0, updated 365, deleted 0, read 195319
0.00 inserts/s, 0.10 updates/s, 0.00 deletes/s, 1.04 reads/s
Number of system rows inserted 0, updated 0, deleted 0, read 692
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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