Storage engines

InnoDB

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

[ Variables | Buffer Pool | InnoDB Status ]

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2024-10-20 02:58:49 0x47d0 INNODB MONITOR OUTPUT
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Per second averages calculated from the last 6 seconds
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BACKGROUND THREAD
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srv_master_thread loops: 1188 srv_active, 0 srv_shutdown, 307926 srv_idle
srv_master_thread log flush and writes: 309113
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SEMAPHORES
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OS WAIT ARRAY INFO: reservation count 18259
OS WAIT ARRAY INFO: signal count 7365
RW-shared spins 12696, rounds 202267, OS waits 5934
RW-excl spins 21834, rounds 57601, OS waits 286
RW-sx spins 20, rounds 504, OS waits 15
Spin rounds per wait: 15.93 RW-shared, 2.64 RW-excl, 25.20 RW-sx
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TRANSACTIONS
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Trx id counter 332291
Purge done for trx's n:o < 295426 undo n:o < 0 state: running but idle
History list length 0
LIST OF TRANSACTIONS FOR EACH SESSION:
---TRANSACTION 282717528617272, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 282717528608920, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 282717528613096, 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
89745 OS file reads, 29178 OS file writes, 13459 OS fsyncs
0.33 reads/s, 16384 avg bytes/read, 0.00 writes/s, 0.00 fsyncs/s
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INSERT BUFFER AND ADAPTIVE HASH INDEX
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Ibuf: size 1, free list len 5, seg size 7, 551 merges
merged operations:
 insert 2638, delete mark 60, delete 5
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 1 buffer(s)
Hash table size 4441, node heap has 3 buffer(s)
Hash table size 4441, node heap has 1 buffer(s)
0.00 hash searches/s, 0.33 non-hash searches/s
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LOG
---
Log sequence number 1286289018
Log flushed up to   1286289018
Pages flushed up to 1286289018
Last checkpoint at  1286289009
0 pending log flushes, 0 pending chkp writes
6255 log i/o's done, 0.00 log i/o's/second
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BUFFER POOL AND MEMORY
----------------------
Total large memory allocated 33554432
Dictionary memory allocated 16661616
Buffer pool size   1003
Free buffers       723
Database pages     270
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 2778, not young 381788
0.00 youngs/s, 0.00 non-youngs/s
Pages read 83911, created 8264, written 21252
0.33 reads/s, 0.00 creates/s, 0.00 writes/s
Buffer pool hit rate 333 / 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: 270, unzip_LRU len: 0
I/O sum[986]:cur[2], 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=9140, Main thread ID=5324, state: sleeping
Number of rows inserted 83605, updated 74, deleted 65, read 12716218
0.00 inserts/s, 0.00 updates/s, 0.00 deletes/s, 0.33 reads/s
Number of system rows inserted 0, updated 0, deleted 0, read 13520
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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