Storage engines

InnoDB

Supports transactions, row-level locking, and foreign keys

[ Mainīgie | Buffer Pool | InnoDB statuss ]

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2024-09-20 03:04:17 0x7f800c468700 INNODB MONITOR OUTPUT
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Per second averages calculated from the last 28 seconds
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BACKGROUND THREAD
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srv_master_thread loops: 46 srv_active, 0 srv_shutdown, 164 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 399
OS WAIT ARRAY INFO: signal count 392
RW-shared spins 67, rounds 125, OS waits 58
RW-excl spins 206, rounds 1164, OS waits 12
RW-sx spins 0, rounds 0, OS waits 0
Spin rounds per wait: 1.87 RW-shared, 5.65 RW-excl, 0.00 RW-sx
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TRANSACTIONS
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Trx id counter 10191
Purge done for trx's n:o < 10191 undo n:o < 0 state: running but idle
History list length 3
LIST OF TRANSACTIONS FOR EACH SESSION:
---TRANSACTION 421663510363600, not started
0 lock struct(s), heap size 1136, 0 row lock(s)
---TRANSACTION 421663510364472, not started
0 lock struct(s), heap size 1136, 0 row lock(s)
---TRANSACTION 421663510362728, not started
0 lock struct(s), heap size 1136, 0 row lock(s)
---TRANSACTION 421663510361856, not started
0 lock struct(s), heap size 1136, 0 row lock(s)
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FILE I/O
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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
1393 OS file reads, 2610 OS file writes, 790 OS fsyncs
0.00 reads/s, 0 avg bytes/read, 0.57 writes/s, 0.50 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 2 buffer(s)
Hash table size 34679, node heap has 3 buffer(s)
Hash table size 34679, node heap has 5 buffer(s)
Hash table size 34679, node heap has 3 buffer(s)
Hash table size 34679, node heap has 3 buffer(s)
Hash table size 34679, node heap has 5 buffer(s)
448.95 hash searches/s, 176.60 non-hash searches/s
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LOG
---
Log sequence number          52096709
Log buffer assigned up to    52096709
Log buffer completed up to   52096709
Log written up to            52096709
Log flushed up to            52096709
Added dirty pages up to      52096709
Pages flushed up to          52096709
Last checkpoint at           52096709
1237 log i/o's done, 0.19 log i/o's/second
----------------------
BUFFER POOL AND MEMORY
----------------------
Total large memory allocated 137363456
Dictionary memory allocated 507244
Buffer pool size   8192
Free buffers       6743
Database pages     1424
Old database pages 505
Modified db pages  0
Pending reads      0
Pending writes: LRU 0, flush list 0, single page 0
Pages made young 705, not young 4695
0.00 youngs/s, 0.00 non-youngs/s
Pages read 1254, created 390, written 1132
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: 1424, unzip_LRU len: 0
I/O sum[22]: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=368, Main thread ID=140188094220032 , state=sleeping
Number of rows inserted 34686, updated 1780, deleted 1528, read 386869
0.04 inserts/s, 0.04 updates/s, 0.00 deletes/s, 1156.82 reads/s
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END OF INNODB MONITOR OUTPUT
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