Console
Storage engines
InnoDB
Percona-XtraDB, Supports transactions, row-level locking, foreign keys and encryption for tables
[ Variables | Buffer Pool | InnoDB Status ]
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2024-10-06 09:38:49 4340 INNODB MONITOR OUTPUT
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Per second averages calculated from the last 34 seconds
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BACKGROUND THREAD
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srv_master_thread loops: 893 srv_active, 0 srv_shutdown, 253583 srv_idle
srv_master_thread log flush and writes: 254474
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SEMAPHORES
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OS WAIT ARRAY INFO: reservation count 1011
OS WAIT ARRAY INFO: signal count 977
Mutex spin waits 56691, rounds 101548, OS waits 481
RW-shared spins 504, rounds 15118, OS waits 494
RW-excl spins 4, rounds 445, OS waits 13
Spin rounds per wait: 1.79 mutex, 30.00 RW-shared, 111.25 RW-excl
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TRANSACTIONS
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Trx id counter 35726
Purge done for trx's n:o < 35724 undo n:o < 0 state: running but idle
History list length 7
LIST OF TRANSACTIONS FOR EACH SESSION:
---TRANSACTION 0, not started
MySQL thread id 4709, OS thread handle 0x4340, query id 99825 localhost 127.0.0.1 root init
SHOW ENGINE INNODB STATUS
---TRANSACTION 35725, not started
MySQL thread id 4708, OS thread handle 0x4340, query id 99816 localhost 127.0.0.1 pma
---TRANSACTION 7427, not started
MySQL thread id 1, OS thread handle 0x1e48, query id 0 Reading from net
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FILE I/O
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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, 0] , aio writes: 0 [0, 0, 0, 0] ,
ibuf aio reads: 0, log i/o's: 0, sync i/o's: 0
Pending flushes (fsync) log: 0; buffer pool: 0
4001 OS file reads, 11176 OS file writes, 4810 OS fsyncs
3.76 reads/s, 16384 avg bytes/read, 13.21 writes/s, 4.97 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
8.09 hash searches/s, 61.88 non-hash searches/s
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LOG
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Log sequence number 4390272
Log flushed up to 4390272
Pages flushed up to 4383677
Last checkpoint at 4382540
Max checkpoint age 7782360
Checkpoint age target 7539162
Modified age 6595
Checkpoint age 7732
0 pending log writes, 0 pending chkp writes
2421 log i/o's done, 2.65 log i/o's/second
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BUFFER POOL AND MEMORY
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Total memory allocated 17203200; in additional pool allocated 0
Total memory allocated by read views 2752
Internal hash tables (constant factor + variable factor)
Adaptive hash index 297300 (276764 + 20536)
Page hash 9068 (buffer pool 0 only)
Dictionary cache 194847 (69928 + 124919)
File system 419128 (406136 + 12992)
Lock system 22124 (21188 + 936)
Recovery system 0 (0 + 0)
Dictionary memory allocated 124919
Buffer pool size 1023
Buffer pool size, bytes 16760832
Free buffers 765
Database pages 257
Old database pages 0
Modified db pages 12
Percent of dirty pages(LRU & free pages): 1.173
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 3938, created 117, written 7737
3.79 reads/s, 0.00 creates/s, 9.86 writes/s
Buffer pool hit rate 979 / 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[694]: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
0 RW transactions active inside InnoDB
0 RO transactions active inside InnoDB
0 out of 1000 descriptors used
Main thread id 8300, state: sleeping
Number of rows inserted 1, updated 1927, deleted 0, read 9974
0.00 inserts/s, 2.26 updates/s, 0.00 deletes/s, 10.06 reads/s
Number of system rows inserted 0, updated 0, deleted 0, read 29
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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