מנועי אחסון

InnoDB

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

[ משתנים | Buffer Pool | מצב InnoDB ]

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2025-09-17 23:47:35 0x7f750c0f3700 INNODB MONITOR OUTPUT
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Per second averages calculated from the last 29 seconds
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BACKGROUND THREAD
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srv_master_thread loops: 6392 srv_active, 0 srv_shutdown, 23215 srv_idle
srv_master_thread log flush and writes: 29604
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SEMAPHORES
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OS WAIT ARRAY INFO: reservation count 18405
--Thread 140139976140544 has waited at log0log.cc line 1317 for 0.00 seconds the semaphore:
S-lock on RW-latch at 0x56479e071dd8 created in file log0log.cc line 578
a writer (thread id 0) has reserved it in mode  exclusive
number of readers 0, waiters flag 1, lock_word: 0
Last time write locked in file log0log.cc line 1268
OS WAIT ARRAY INFO: signal count 15502
RW-shared spins 0, rounds 14599, OS waits 7293
RW-excl spins 0, rounds 1094, OS waits 37
RW-sx spins 0, rounds 0, OS waits 0
Spin rounds per wait: 14599.00 RW-shared, 1094.00 RW-excl, 0.00 RW-sx
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TRANSACTIONS
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Trx id counter 53075
Purge done for trx's n:o < 53075 undo n:o < 0 state: running but idle
History list length 24
LIST OF TRANSACTIONS FOR EACH SESSION:
---TRANSACTION 421615450026488, not started
0 lock struct(s), heap size 1136, 0 row lock(s)
---TRANSACTION 421615450022232, not started
0 lock struct(s), heap size 1136, 0 row lock(s)
---TRANSACTION 421615450017976, 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: complete io for log (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: 1; buffer pool: 0
863 OS file reads, 71972 OS file writes, 46556 OS fsyncs
0.00 reads/s, 0 avg bytes/read, 1.62 writes/s, 1.41 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 26 buffer(s)
Hash table size 69257, node heap has 0 buffer(s)
0.59 hash searches/s, 0.55 non-hash searches/s
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LOG
---
Log sequence number 19508831
Log flushed up to   19508655
Pages flushed up to 19508655
Last checkpoint at  19508139
0 pending log flushes, 1 pending chkp writes
28800 log i/o's done, 0.90 log i/o's/second
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BUFFER POOL AND MEMORY
----------------------
Total large memory allocated 285212672
Dictionary memory allocated 138944
Buffer pool size   16024
Free buffers       15077
Database pages     879
Old database pages 330
Modified db pages  3
Percent of dirty pages(LRU & free pages): 0.019
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 704, created 175, written 37239
0.00 reads/s, 0.00 creates/s, 0.40 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: 879, unzip_LRU len: 0
I/O sum[0]: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=902, Main thread ID=140139976140544, state: making checkpoint
Number of rows inserted 2, updated 7754, deleted 0, read 3939031
0.00 inserts/s, 0.21 updates/s, 0.00 deletes/s, 0.45 reads/s
Number of system rows inserted 0, updated 0, deleted 0, read 12357
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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