Storage engines
InnoDB
Supports transactions, row-level locking, and foreign keys
[
Variables
|
Buffer Pool
|
InnoDB Status
]
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2024-11-12 23:48:01 0x7f904c13f700 INNODB MONITOR OUTPUT
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Per second averages calculated from the last 11 seconds
-----------------
BACKGROUND THREAD
-----------------
srv_master_thread loops: 18 srv_active, 0 srv_shutdown, 115 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 31
OS WAIT ARRAY INFO: signal count 31
RW-shared spins 0, rounds 0, OS waits 0
RW-excl spins 5, rounds 120, OS waits 4
RW-sx spins 0, rounds 0, OS waits 0
Spin rounds per wait: 0.00 RW-shared, 24.00 RW-excl, 0.00 RW-sx
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TRANSACTIONS
------------
Trx id counter 9806
Purge done for trx's n:o < 9806 undo n:o < 0 state: running but idle
History list length 71
LIST OF TRANSACTIONS FOR EACH SESSION:
---TRANSACTION 421732840393320, not started
0 lock struct(s), heap size 1136, 0 row lock(s)
---TRANSACTION 421732840392448, not started
0 lock struct(s), heap size 1136, 0 row lock(s)
--------
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
1193 OS file reads, 520 OS file writes, 210 OS fsyncs
0.00 reads/s, 0 avg bytes/read, 4.73 writes/s, 3.64 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 34679, node heap has 2 buffer(s)
Hash table size 34679, node heap has 2 buffer(s)
Hash table size 34679, node heap has 0 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 1 buffer(s)
Hash table size 34679, node heap has 2 buffer(s)
Hash table size 34679, node heap has 5 buffer(s)
847.56 hash searches/s, 221.53 non-hash searches/s
---
LOG
---
Log sequence number 51002079
Log buffer assigned up to 51002079
Log buffer completed up to 51002079
Log written up to 51002079
Log flushed up to 51002079
Added dirty pages up to 51002079
Pages flushed up to 51001162
Last checkpoint at 51001162
138 log i/o's done, 2.18 log i/o's/second
----------------------
BUFFER POOL AND MEMORY
----------------------
Total large memory allocated 137363456
Dictionary memory allocated 520925
Buffer pool size 8192
Free buffers 6937
Database pages 1242
Old database pages 438
Modified db pages 3
Pending reads 0
Pending writes: LRU 0, flush list 0, single page 0
Pages made young 145, not young 719
0.00 youngs/s, 0.00 non-youngs/s
Pages read 1094, created 154, written 307
0.00 reads/s, 0.00 creates/s, 0.00 writes/s
Buffer pool hit rate 1000 / 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: 1242, unzip_LRU len: 0
I/O sum[50]:cur[0], unzip sum[0]:cur[0]
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ROW OPERATIONS
--------------
0 queries inside InnoDB, 0 queries in queue
0 read views open inside InnoDB
Process ID=391, Main thread ID=140257356072704 , state=sleeping
Number of rows inserted 218, updated 357, deleted 0, read 266707
4.36 inserts/s, 0.18 updates/s, 0.00 deletes/s, 1531.95 reads/s
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END OF INNODB MONITOR OUTPUT
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