Storage engines

InnoDB

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

[ Variablat | Pellgu zbutës | Statusi InnoDB ]

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2026-02-26 21:02:43 0x7fb6883d3700 INNODB MONITOR OUTPUT
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Per second averages calculated from the last 17 seconds
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BACKGROUND THREAD
-----------------
srv_master_thread loops: 14541 srv_active, 0 srv_shutdown, 24855 srv_idle
srv_master_thread log flush and writes: 39390
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SEMAPHORES
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OS WAIT ARRAY INFO: reservation count 44869
OS WAIT ARRAY INFO: signal count 34406
RW-shared spins 0, rounds 24710, OS waits 12332
RW-excl spins 0, rounds 4354, OS waits 142
RW-sx spins 9, rounds 260, OS waits 7
Spin rounds per wait: 24710.00 RW-shared, 4354.00 RW-excl, 28.89 RW-sx
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TRANSACTIONS
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Trx id counter 84598
Purge done for trx's n:o < 84598 undo n:o < 0 state: running but idle
History list length 2
LIST OF TRANSACTIONS FOR EACH SESSION:
---TRANSACTION 421896944718488, not started
0 lock struct(s), heap size 1136, 0 row lock(s)
---TRANSACTION 421896944714232, not started
0 lock struct(s), heap size 1136, 0 row lock(s)
---TRANSACTION 421896944709976, not started
0 lock struct(s), heap size 1136, 0 row lock(s)
---TRANSACTION 421896944705720, 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
864 OS file reads, 178492 OS file writes, 99054 OS fsyncs
0.00 reads/s, 0 avg bytes/read, 4.35 writes/s, 1.29 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 69257, node heap has 1 buffer(s)
Hash table size 69257, node heap has 10 buffer(s)
Hash table size 69257, node heap has 2 buffer(s)
Hash table size 69257, node heap has 25 buffer(s)
Hash table size 69257, node heap has 1 buffer(s)
Hash table size 69257, node heap has 3 buffer(s)
Hash table size 69257, node heap has 25 buffer(s)
Hash table size 69257, node heap has 0 buffer(s)
0.94 hash searches/s, 0.29 non-hash searches/s
---
LOG
---
Log sequence number 39447010
Log flushed up to   39447010
Pages flushed up to 39447010
Last checkpoint at  39447001
0 pending log flushes, 0 pending chkp writes
62674 log i/o's done, 0.94 log i/o's/second
----------------------
BUFFER POOL AND MEMORY
----------------------
Total large memory allocated 285212672
Dictionary memory allocated 146960
Buffer pool size   16024
Free buffers       15044
Database pages     913
Old database pages 341
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 0, not young 0
0.00 youngs/s, 0.00 non-youngs/s
Pages read 705, created 208, written 103724
0.00 reads/s, 0.00 creates/s, 3.29 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: 913, unzip_LRU len: 0
I/O sum[0]: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=904, Main thread ID=140421195884288, state: sleeping
Number of rows inserted 84, updated 23204, deleted 0, read 3000330
0.00 inserts/s, 0.24 updates/s, 0.00 deletes/s, 0.47 reads/s
Number of system rows inserted 0, updated 0, deleted 0, read 6562
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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