Storage engines

InnoDB

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

[ Variabel | Penampungan Penyangga | Status InnoDB ]

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2026-04-16 00:16:22 0x7be4e81ff6c0 INNODB MONITOR OUTPUT
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Per second averages calculated from the last 54 seconds
-----------------
BACKGROUND THREAD
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srv_master_thread loops: 2028 srv_active, 0 srv_shutdown, 1962698 srv_idle
srv_master_thread log flush and writes: 1964684
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SEMAPHORES
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OS WAIT ARRAY INFO: reservation count 48531
OS WAIT ARRAY INFO: signal count 54746
RW-shared spins 48109, rounds 1003767, OS waits 26622
RW-excl spins 62535, rounds 436230, OS waits 4010
RW-sx spins 1383, rounds 36030, OS waits 685
Spin rounds per wait: 20.86 RW-shared, 6.98 RW-excl, 26.05 RW-sx
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TRANSACTIONS
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Trx id counter 298893
Purge done for trx's n:o < 298893 undo n:o < 0 state: running but idle
History list length 3
LIST OF TRANSACTIONS FOR EACH SESSION:
---TRANSACTION 417698079789680, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 417698079785464, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 417698079781248, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 417698079772816, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 417698079777032, 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
1294397 OS file reads, 78680 OS file writes, 17217 OS fsyncs
1.04 reads/s, 16384 avg bytes/read, 3.41 writes/s, 1.37 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, 10260 merges
merged operations:
 insert 48682, delete mark 359, delete 71
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 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 0 buffer(s)
Hash table size 4441, node heap has 1 buffer(s)
Hash table size 4441, node heap has 1 buffer(s)
6.06 hash searches/s, 12.59 non-hash searches/s
---
LOG
---
Log sequence number 13657954667
Log flushed up to   13657954647
Pages flushed up to 13657947332
Last checkpoint at  13657919683
0 pending log flushes, 0 pending chkp writes
8310 log i/o's done, 1.04 log i/o's/second
----------------------
BUFFER POOL AND MEMORY
----------------------
Total large memory allocated 33554432
Dictionary memory allocated 92720
Buffer pool size   1003
Free buffers       731
Database pages     265
Old database pages 0
Modified db pages  33
Percent of dirty pages(LRU & free pages): 3.310
Max dirty pages percent: 75.000
Pending reads 0
Pending writes: LRU 0, flush list 0, single page 0
Pages made young 81867, not young 58411691
0.00 youngs/s, 0.00 non-youngs/s
Pages read 1294357, created 1395, written 66927
1.04 reads/s, 0.04 creates/s, 2.24 writes/s
Buffer pool hit rate 980 / 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: 265, unzip_LRU len: 0
I/O sum[92]:cur[3], 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=313019, Main thread ID=136221909042880, state: sleeping
Number of rows inserted 30755, updated 130467, deleted 2, read 149843039
0.00 inserts/s, 1.02 updates/s, 0.00 deletes/s, 11.24 reads/s
Number of system rows inserted 6, updated 0, deleted 0, read 933
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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