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 02:03:24 0x7be4e81696c0 INNODB MONITOR OUTPUT
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Per second averages calculated from the last 11 seconds
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BACKGROUND THREAD
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srv_master_thread loops: 2154 srv_active, 0 srv_shutdown, 1968977 srv_idle
srv_master_thread log flush and writes: 1971088
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SEMAPHORES
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OS WAIT ARRAY INFO: reservation count 50722
OS WAIT ARRAY INFO: signal count 55422
RW-shared spins 48292, rounds 1009332, OS waits 26799
RW-excl spins 62560, rounds 437154, OS waits 4036
RW-sx spins 1383, rounds 36030, OS waits 685
Spin rounds per wait: 20.90 RW-shared, 6.99 RW-excl, 26.05 RW-sx
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TRANSACTIONS
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Trx id counter 300273
Purge done for trx's n:o < 300273 undo n:o < 0 state: running
History list length 6
LIST OF TRANSACTIONS FOR EACH SESSION:
---TRANSACTION 417698079777032, 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)
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FILE I/O
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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
1294831 OS file reads, 81461 OS file writes, 18499 OS fsyncs
0.09 reads/s, 16384 avg bytes/read, 1.36 writes/s, 0.73 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)
3.09 hash searches/s, 7.18 non-hash searches/s
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LOG
---
Log sequence number 13658699039
Log flushed up to   13658699019
Pages flushed up to 13658696739
Last checkpoint at  13658691979
0 pending log flushes, 0 pending chkp writes
9202 log i/o's done, 0.45 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 92720
Buffer pool size   1003
Free buffers       739
Database pages     257
Old database pages 0
Modified db pages  5
Percent of dirty pages(LRU & free pages): 0.502
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 1294791, created 1404, written 68664
0.09 reads/s, 0.00 creates/s, 0.82 writes/s
Buffer pool hit rate 995 / 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[108]: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=313019, Main thread ID=136221909042880, state: sleeping
Number of rows inserted 30755, updated 131030, deleted 2, read 149846077
0.00 inserts/s, 0.55 updates/s, 0.00 deletes/s, 3.18 reads/s
Number of system rows inserted 6, updated 0, deleted 0, read 1417
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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