ストレージエンジン

InnoDB

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

[ 変数 | バッファプール | InnoDB ステータス ]

=====================================
2026-04-25 13:01:23 0x7646c88d36c0 INNODB MONITOR OUTPUT
=====================================
Per second averages calculated from the last 0 seconds
-----------------
BACKGROUND THREAD
-----------------
srv_master_thread loops: 18152 srv_active, 0 srv_shutdown, 12147 srv_idle
srv_master_thread log flush and writes: 30298
----------
SEMAPHORES
----------
OS WAIT ARRAY INFO: reservation count 1441968
OS WAIT ARRAY INFO: signal count 230329
RW-shared spins 19086, rounds 561286, OS waits 12076
RW-excl spins 177, rounds 5433, OS waits 178
RW-sx spins 0, rounds 0, OS waits 0
Spin rounds per wait: 29.41 RW-shared, 30.69 RW-excl, 0.00 RW-sx
------------
TRANSACTIONS
------------
Trx id counter 8671616
Purge done for trx's n:o < 8671615 undo n:o < 0 state: running but idle
History list length 0
LIST OF TRANSACTIONS FOR EACH SESSION:
---TRANSACTION 411521314926976, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 411521314922760, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 411521314918544, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
--------
FILE I/O
--------
I/O thread 0 state: waiting for i/o request (insert buffer thread)
I/O thread 1 state: waiting for i/o request (log thread)
I/O thread 2 state: waiting for i/o request (read thread)
I/O thread 3 state: waiting for i/o request (read thread)
I/O thread 4 state: waiting for i/o request (read thread)
I/O thread 5 state: waiting for i/o request (read thread)
I/O thread 6 state: waiting for i/o request (write thread)
I/O thread 7 state: waiting for i/o request (write thread)
I/O thread 8 state: waiting for i/o request (write thread)
I/O thread 9 state: waiting for i/o request (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
648860 OS file reads, 190666 OS file writes, 117010 OS fsyncs
5000.00 reads/s, 16384 avg bytes/read, 38000.00 writes/s, 12000.00 fsyncs/s
-------------------------------------
INSERT BUFFER AND ADAPTIVE HASH INDEX
-------------------------------------
Ibuf: size 1, free list len 368, seg size 370, 0 merges
merged operations:
 insert 0, delete mark 0, delete 0
discarded operations:
 insert 0, delete mark 0, delete 0
Hash table size 4441, node heap has 1 buffer(s)
Hash table size 4441, node heap has 0 buffer(s)
Hash table size 4441, node heap has 0 buffer(s)
Hash table size 4441, node heap has 1 buffer(s)
Hash table size 4441, node heap has 1 buffer(s)
Hash table size 4441, node heap has 1 buffer(s)
Hash table size 4441, node heap has 1 buffer(s)
Hash table size 4441, node heap has 1 buffer(s)
66000.00 hash searches/s, 85000.00 non-hash searches/s
---
LOG
---
Log sequence number 4055653676
Log flushed up to   4055653225
Pages flushed up to 4055652108
Last checkpoint at  4055637121
0 pending log flushes, 0 pending chkp writes
60620 log i/o's done, 6.00 log i/o's/second
----------------------
BUFFER POOL AND MEMORY
----------------------
Total large memory allocated 33554432
Dictionary memory allocated 400160
Buffer pool size   1003
Free buffers       732
Database pages     257
Old database pages 0
Modified db pages  19
Percent of dirty pages(LRU & free pages): 1.919
Max dirty pages percent: 75.000
Pending reads 0
Pending writes: LRU 0, flush list 0, single page 0
Pages made young 1110, not young 17770335
0.00 youngs/s, 0.00 non-youngs/s
Pages read 648690, created 1452, written 108885
5000.00 reads/s, 0.00 creates/s, 30000.00 writes/s
Buffer pool hit rate 988 / 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: 257, unzip_LRU len: 0
I/O sum[173]:cur[38], unzip sum[0]:cur[0]
--------------
ROW OPERATIONS
--------------
0 queries inside InnoDB, 0 queries in queue
0 read views open inside InnoDB
Process ID=1153, Main thread ID=130045142091456, state: sleeping
Number of rows inserted 2, updated 24826, deleted 2, read 1000371990
0.00 inserts/s, 5000.00 updates/s, 0.00 deletes/s, 62000.00 reads/s
Number of system rows inserted 0, updated 0, deleted 0, read 1126
0.00 inserts/s, 0.00 updates/s, 0.00 deletes/s, 0.00 reads/s
----------------------------
END OF INNODB MONITOR OUTPUT
============================