Storage engines

InnoDB

Supports transactions, row-level locking, and foreign keys

[ ตัวแปร | Buffer Pool | สถานะของ InnoDB ]

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2024-09-29 01:31:25 0x7f8cd80ad700 INNODB MONITOR OUTPUT
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Per second averages calculated from the last 37 seconds
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BACKGROUND THREAD
-----------------
srv_master_thread loops: 11 srv_active, 0 srv_shutdown, 25 srv_idle
srv_master_thread log flush and writes: 0
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SEMAPHORES
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OS WAIT ARRAY INFO: reservation count 43
OS WAIT ARRAY INFO: signal count 35
RW-shared spins 0, rounds 0, OS waits 0
RW-excl spins 0, rounds 0, OS waits 0
RW-sx spins 0, rounds 0, OS waits 0
Spin rounds per wait: 0.00 RW-shared, 0.00 RW-excl, 0.00 RW-sx
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TRANSACTIONS
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Trx id counter 9819
Purge done for trx's n:o < 9819 undo n:o < 0 state: running but idle
History list length 81
LIST OF TRANSACTIONS FOR EACH SESSION:
---TRANSACTION 421718036835792, not started
0 lock struct(s), heap size 1136, 0 row lock(s)
---TRANSACTION 421718036834920, not started
0 lock struct(s), heap size 1136, 0 row lock(s)
---TRANSACTION 421718036834048, not started
0 lock struct(s), heap size 1136, 0 row lock(s)
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FILE I/O
--------
I/O thread 0 state: waiting for completed aio requests (insert buffer thread)
I/O thread 1 state: waiting for completed aio requests (log thread)
I/O thread 2 state: waiting for completed aio requests (read thread)
I/O thread 3 state: waiting for completed aio requests (read thread)
I/O thread 4 state: waiting for completed aio requests (read thread)
I/O thread 5 state: waiting for completed aio requests (read thread)
I/O thread 6 state: waiting for completed aio requests (write thread)
I/O thread 7 state: waiting for completed aio requests (write thread)
I/O thread 8 state: waiting for completed aio requests (write thread)
I/O thread 9 state: waiting for completed aio requests (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
1168 OS file reads, 411 OS file writes, 143 OS fsyncs
30.74 reads/s, 20616 avg bytes/read, 10.82 writes/s, 3.76 fsyncs/s
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INSERT BUFFER AND ADAPTIVE HASH INDEX
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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 34679, node heap has 2 buffer(s)
Hash table size 34679, node heap has 2 buffer(s)
Hash table size 34679, node heap has 1 buffer(s)
Hash table size 34679, node heap has 0 buffer(s)
Hash table size 34679, node heap has 1 buffer(s)
Hash table size 34679, node heap has 0 buffer(s)
Hash table size 34679, node heap has 2 buffer(s)
Hash table size 34679, node heap has 5 buffer(s)
3202.89 hash searches/s, 1339.26 non-hash searches/s
---
LOG
---
Log sequence number          50963000
Log buffer assigned up to    50963000
Log buffer completed up to   50963000
Log written up to            50963000
Log flushed up to            50963000
Added dirty pages up to      50963000
Pages flushed up to          50963000
Last checkpoint at           50963000
100 log i/o's done, 2.56 log i/o's/second
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BUFFER POOL AND MEMORY
----------------------
Total large memory allocated 137363456
Dictionary memory allocated 544651
Buffer pool size   8192
Free buffers       6963
Database pages     1216
Old database pages 468
Modified db pages  0
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 1073, created 143, written 258
0.00 reads/s, 0.00 creates/s, 0.00 writes/s
Buffer pool hit rate 997 / 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: 1216, unzip_LRU len: 0
I/O sum[0]:cur[6], 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=356, Main thread ID=140242548885248 , state=sleeping
Number of rows inserted 4, updated 348, deleted 0, read 150861
0.11 inserts/s, 9.41 updates/s, 0.00 deletes/s, 4077.21 reads/s
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END OF INNODB MONITOR OUTPUT
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