Opslag-engines

InnoDB

Supports transactions, row-level locking, and foreign keys

[ Variabelen | Buffer Pool | InnoDB-status ]

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2024-09-19 19:18:57 0x7f993008c700 INNODB MONITOR OUTPUT
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Per second averages calculated from the last 15 seconds
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BACKGROUND THREAD
-----------------
srv_master_thread loops: 63 srv_active, 0 srv_shutdown, 111 srv_idle
srv_master_thread log flush and writes: 0
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SEMAPHORES
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OS WAIT ARRAY INFO: reservation count 465
OS WAIT ARRAY INFO: signal count 464
RW-shared spins 71, rounds 131, OS waits 60
RW-excl spins 207, rounds 1537, OS waits 27
RW-sx spins 0, rounds 0, OS waits 0
Spin rounds per wait: 1.85 RW-shared, 7.43 RW-excl, 0.00 RW-sx
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TRANSACTIONS
------------
Trx id counter 11501
Purge done for trx's n:o < 11497 undo n:o < 0 state: running but idle
History list length 6
LIST OF TRANSACTIONS FOR EACH SESSION:
---TRANSACTION 421771420951712, not started
0 lock struct(s), heap size 1136, 0 row lock(s)
---TRANSACTION 421771420950840, not started
0 lock struct(s), heap size 1136, 0 row lock(s)
---TRANSACTION 421771420948224, not started
0 lock struct(s), heap size 1136, 0 row lock(s)
---TRANSACTION 11497, ACTIVE 1 sec creating index
4 lock struct(s), heap size 1136, 0 row lock(s), undo log entries 25
MySQL thread id 2237, OS thread handle 140295912900352, query id 30957 192.168.30.20 root creating table
CREATE TABLE `donates` (
  `order_id` int(11) NOT NULL auto_increment,
  `txn_id` varchar(19) NOT NULL,
  `payer_email` varchar(75) NOT NULL,
  `mc_gross` float(9,2) NOT NULL,
  `donor` int(11) default NULL,
  `date` timestamp NOT NULL default CURRENT_TIMESTAMP,
  `donated_for` int(11) default NULL,
  PRIMARY KEY  (`order_id`),
  UNIQUE KEY `txn_id` (`txn_id`)
) ENGINE=InnoDB DEFAULT CHARSET=latin1
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FILE I/O
--------
I/O thread 0 state: waiting for completed aio requests (insert buffer thread)
I/O thread 1 state: waiting for completed aio requests (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
1369 OS file reads, 5840 OS file writes, 2647 OS fsyncs
0.00 reads/s, 0 avg bytes/read, 85.93 writes/s, 52.33 fsyncs/s
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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 34679, node heap has 1 buffer(s)
Hash table size 34679, node heap has 2 buffer(s)
Hash table size 34679, node heap has 2 buffer(s)
Hash table size 34679, node heap has 2 buffer(s)
Hash table size 34679, node heap has 5 buffer(s)
Hash table size 34679, node heap has 4 buffer(s)
Hash table size 34679, node heap has 3 buffer(s)
Hash table size 34679, node heap has 6 buffer(s)
1270.92 hash searches/s, 797.08 non-hash searches/s
---
LOG
---
Log sequence number          53210278
Log buffer assigned up to    53210278
Log buffer completed up to   53210278
Log written up to            53210278
Log flushed up to            53208705
Added dirty pages up to      53210278
Pages flushed up to          52058235
Last checkpoint at           52058235
4157 log i/o's done, 76.60 log i/o's/second
----------------------
BUFFER POOL AND MEMORY
----------------------
Total large memory allocated 137363456
Dictionary memory allocated 754548
Buffer pool size   8192
Free buffers       6625
Database pages     1542
Old database pages 549
Modified db pages  456
Pending reads      0
Pending writes: LRU 0, flush list 0, single page 0
Pages made young 1257, not young 419
0.00 youngs/s, 0.00 non-youngs/s
Pages read 1238, created 328, written 1476
0.00 reads/s, 0.00 creates/s, 0.00 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: 1542, unzip_LRU len: 0
I/O sum[342]:cur[5], 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=372, Main thread ID=140295933998848 , state=sleeping
Number of rows inserted 2317, updated 2548, deleted 1552, read 400458
43.80 inserts/s, 8.53 updates/s, 0.00 deletes/s, 1798.08 reads/s
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END OF INNODB MONITOR OUTPUT
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