存储引擎

InnoDB

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

[ 变量 | 缓冲池 | InnoDB 状态 ]

=====================================
2025-03-15 03:09:44 0x15e0 INNODB MONITOR OUTPUT
=====================================
Per second averages calculated from the last 44 seconds
-----------------
BACKGROUND THREAD
-----------------
srv_master_thread loops: 170746 srv_active, 0 srv_shutdown, 2445808 srv_idle
srv_master_thread log flush and writes: 2616554
----------
SEMAPHORES
----------
OS WAIT ARRAY INFO: reservation count 11385664
OS WAIT ARRAY INFO: signal count 252808
RW-shared spins 339501, rounds 10184911, OS waits 186797
RW-excl spins 12105, rounds 359521, OS waits 9349
RW-sx spins 17, rounds 480, OS waits 8
Spin rounds per wait: 30.00 RW-shared, 29.70 RW-excl, 28.24 RW-sx
------------
TRANSACTIONS
------------
Trx id counter 381909
Purge done for trx's n:o < 381909 undo n:o < 0 state: running but idle
History list length 3
LIST OF TRANSACTIONS FOR EACH SESSION:
---TRANSACTION 282850182410528, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 282850182406360, not started
0 lock struct(s), heap size 1128, 0 row lock(s)
---TRANSACTION 282850182402192, 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
126566 OS file reads, 2143156 OS file writes, 1627323 OS fsyncs
0.14 reads/s, 16384 avg bytes/read, 1.32 writes/s, 0.82 fsyncs/s
-------------------------------------
INSERT BUFFER AND ADAPTIVE HASH INDEX
-------------------------------------
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 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 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)
1.45 hash searches/s, 3.64 non-hash searches/s
---
LOG
---
Log sequence number 253590172
Log flushed up to   253590172
Pages flushed up to 253590172
Last checkpoint at  253590163
0 pending log flushes, 0 pending chkp writes
1031695 log i/o's done, 0.57 log i/o's/second
----------------------
BUFFER POOL AND MEMORY
----------------------
Total large memory allocated 33554432
Dictionary memory allocated 95152
Buffer pool size   1003
Free buffers       743
Database pages     256
Old database pages 0
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 126524, created 8322, written 898252
0.14 reads/s, 0.00 creates/s, 0.66 writes/s
Buffer pool hit rate 987 / 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: 256, unzip_LRU len: 0
I/O sum[43]:cur[0], unzip sum[0]:cur[0]
--------------
ROW OPERATIONS
--------------
0 queries inside InnoDB, 0 queries in queue
0 read views open inside InnoDB
Process ID=3900, Main thread ID=1092, state: sleeping
Number of rows inserted 190, updated 169915, deleted 134, read 3518758
0.00 inserts/s, 0.07 updates/s, 0.00 deletes/s, 1.32 reads/s
Number of system rows inserted 0, updated 0, deleted 0, read 3768
0.00 inserts/s, 0.00 updates/s, 0.00 deletes/s, 0.00 reads/s
----------------------------
END OF INNODB MONITOR OUTPUT
============================