Storage engines

InnoDB

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

[ Variabel | Penampungan Penyangga | Status InnoDB ]

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2025-08-19 01:10:17 0x514 INNODB MONITOR OUTPUT
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Per second averages calculated from the last 45 seconds
-----------------
BACKGROUND THREAD
-----------------
srv_master_thread loops: 606431 srv_active, 0 srv_shutdown, 348446 srv_idle
srv_master_thread log flush and writes: 954877
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SEMAPHORES
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OS WAIT ARRAY INFO: reservation count 62661722
--Thread 3292 has waited at srv0srv.cc line 900 for 0.00 seconds the semaphore:
Mutex at 00007FF78C600C50, Mutex SRV_SYS created srv0srv.cc:1005, lock var 0

--Thread 3296 has waited at srv0srv.cc line 900 for 0.00 seconds the semaphore:
Mutex at 00007FF78C600C50, Mutex SRV_SYS created srv0srv.cc:1005, lock var 0

OS WAIT ARRAY INFO: signal count 17554465
RW-shared spins 317480, rounds 9470983, OS waits 245525
RW-excl spins 18267, rounds 550627, OS waits 16160
RW-sx spins 185, rounds 5453, OS waits 156
Spin rounds per wait: 29.83 RW-shared, 30.14 RW-excl, 29.48 RW-sx
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TRANSACTIONS
------------
Trx id counter 4526384
Purge done for trx's n:o < 4526384 undo n:o < 0 state: running
History list length 13
LIST OF TRANSACTIONS FOR EACH SESSION:
---TRANSACTION 281794502635664, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 281794502644000, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 281794502639832, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 281794502656504, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 281794502652336, 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: 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
471689 OS file reads, 6488421 OS file writes, 3880076 OS fsyncs
0.27 reads/s, 16384 avg bytes/read, 0.80 writes/s, 0.51 fsyncs/s
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INSERT BUFFER AND ADAPTIVE HASH INDEX
-------------------------------------
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 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)
1.58 hash searches/s, 3.80 non-hash searches/s
---
LOG
---
Log sequence number 2609229647
Log flushed up to   2609229627
Pages flushed up to 2609226143
Last checkpoint at  2609217420
0 pending log flushes, 0 pending chkp writes
2081649 log i/o's done, 0.31 log i/o's/second
----------------------
BUFFER POOL AND MEMORY
----------------------
Total large memory allocated 33554432
Dictionary memory allocated 107672
Buffer pool size   1003
Free buffers       742
Database pages     258
Old database pages 0
Modified db pages  9
Percent of dirty pages(LRU & free pages): 0.899
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 471638, created 32237, written 3739920
0.27 reads/s, 0.00 creates/s, 0.42 writes/s
Buffer pool hit rate 975 / 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: 258, unzip_LRU len: 0
I/O sum[64]:cur[7], 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=2392, Main thread ID=3284, state: sleeping
Number of rows inserted 0, updated 852796, deleted 0, read 10147516
0.00 inserts/s, 0.24 updates/s, 0.00 deletes/s, 3.22 reads/s
Number of system rows inserted 0, updated 0, deleted 0, read 8108
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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