存储引擎

InnoDB

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

[ 变量 | 缓冲池 | InnoDB 状态 ]

=====================================
2026-04-11 22:59:34 0x5c08 INNODB MONITOR OUTPUT
=====================================
Per second averages calculated from the last 60 seconds
-----------------
BACKGROUND THREAD
-----------------
srv_master_thread loops: 175771 srv_active, 0 srv_shutdown, 30693 srv_idle
srv_master_thread log flush and writes: 206464
----------
SEMAPHORES
----------
OS WAIT ARRAY INFO: reservation count 10013134
OS WAIT ARRAY INFO: signal count 420517
RW-shared spins 63520, rounds 1864647, OS waits 53175
RW-excl spins 3041, rounds 56682, OS waits 1541
RW-sx spins 65, rounds 1355, OS waits 37
Spin rounds per wait: 29.36 RW-shared, 18.64 RW-excl, 20.85 RW-sx
------------
TRANSACTIONS
------------
Trx id counter 8568903
Purge done for trx's n:o < 8568902 undo n:o < 0 state: running but idle
History list length 0
LIST OF TRANSACTIONS FOR EACH SESSION:
---TRANSACTION 283722789753336, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 283722789749168, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 283722789745000, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 283722789732496, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 283722789740832, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 283722789736664, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
--------
FILE I/O
--------
I/O thread 0 state: native aio handle (insert buffer thread)
I/O thread 1 state: native aio handle (log thread)
I/O thread 2 state: native aio handle (read thread)
I/O thread 3 state: native aio handle (read thread)
I/O thread 4 state: native aio handle (read thread)
I/O thread 5 state: native aio handle (read thread)
I/O thread 6 state: native aio handle (write thread)
I/O thread 7 state: native aio handle (write thread)
I/O thread 8 state: native aio handle (write thread)
I/O thread 9 state: native aio handle (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
418940 OS file reads, 2247813 OS file writes, 1253090 OS fsyncs
3.17 reads/s, 16384 avg bytes/read, 17.92 writes/s, 8.47 fsyncs/s
-------------------------------------
INSERT BUFFER AND ADAPTIVE HASH INDEX
-------------------------------------
Ibuf: size 1, free list len 0, seg size 2, 166 merges
merged operations:
 insert 514, delete mark 3, delete 2
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 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)
Hash table size 4441, node heap has 1 buffer(s)
29.05 hash searches/s, 71.72 non-hash searches/s
---
LOG
---
Log sequence number 4906225236
Log flushed up to   4906225236
Pages flushed up to 4906200764
Last checkpoint at  4906195900
0 pending log flushes, 0 pending chkp writes
647867 log i/o's done, 4.58 log i/o's/second
----------------------
BUFFER POOL AND MEMORY
----------------------
Total large memory allocated 33554432
Dictionary memory allocated 122696
Buffer pool size   1003
Free buffers       747
Database pages     249
Old database pages 0
Modified db pages  76
Percent of dirty pages(LRU & free pages): 7.623
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 418888, created 13375, written 1356023
3.17 reads/s, 0.10 creates/s, 11.62 writes/s
Buffer pool hit rate 985 / 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: 249, unzip_LRU len: 0
I/O sum[739]:cur[10], unzip sum[0]:cur[0]
--------------
ROW OPERATIONS
--------------
0 queries inside InnoDB, 0 queries in queue
0 read views open inside InnoDB
Process ID=18880, Main thread ID=14924, state: sleeping
Number of rows inserted 2199, updated 346859, deleted 1256, read 11423322
0.00 inserts/s, 3.32 updates/s, 0.00 deletes/s, 42.55 reads/s
Number of system rows inserted 0, updated 0, deleted 0, read 1572
0.00 inserts/s, 0.00 updates/s, 0.00 deletes/s, 0.00 reads/s
----------------------------
END OF INNODB MONITOR OUTPUT
============================