|
: 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
894 OS file reads, 125124 OS file writes, 6256 OS fsyncs
0.00 reads/s, 0 avg bytes/read, 0.00 writes/s, 0.00 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 232523, node heap has 0 buffer(s)
Hash table size 232523, node heap has 0 buffer(s)
Hash table size 232523, node heap has 0 buffer(s)
Hash table size 232523, node heap has 3093 buffer(s)
Hash table size 232523, node heap has 1 buffer(s)
Hash table size 232523, node heap has 1545 buffer(s)
Hash table size 232523, node heap has 1 buffer(s)
Hash table size 232523, node heap has 1 buffer(s)
0.00 hash searches/s, 0.00 non-hash searches/s
---
LOG
---
Log sequence number 1258938797
Log flushed up to 1258938797
Pages flushed up to 1258938797
Last checkpoint at 1258938788
0 pending log flushes, 0 pending chkp writes
1286 log i/o's done, 0.00 log i/o's/second
----------------------
BUFFER POOL AND MEMORY
----------------------
Total large memory allocated 962002944
Dictionary memory allocated 320881
Buffer pool size 57344
Free buffers 1024
Database pages 51679
Old database pages 19056
Modified db pages 0
Pending reads 0
Pending writes: LRU 0, flush list 0, single page 0
Pages made young 335, not young 124
0.00 youngs/s, 0.00 non-youngs/s
Pages read 379, created 60479, written 118447
0.00 reads/s, 0.00 creates/s, 0.00 writes/s
No buffer pool page gets since the last printout
Pages read ahead 0.00/s, evicted without access 0.00/s, Random read ahead 0.00/s
LRU len: 51679, unzip_LRU len: 0
I/O sum[0]: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=10779, Main thread ID=140081746663168, state: sleeping
Number of rows inserted 10501644, updated 2100327, deleted 0, read 21003388
0.00 inserts/s, 0.00 updates/s, 0.00 deletes/s, 0.00 reads/s
----------------------------
END OF INNODB MONITOR OUTPUT
============================
3）innodb_additional_mem_pool_size
innodb_additional_mem_pool_size变量为InnoDB特定数据字典信息定义了内存池。对于这个变量，没有什么好的方法来确定它的最优值，一般将其设置为10M。
4）query_cache_size
query_cache_size变量是一个用来存储经常缓存过的查询全局内存缓冲区。使用query_cache_type变量可以总体启用和禁用查询缓存。启用时query_cache_size的值可能为0，这表示没有查询需要被缓存。而MySQL实例可以通过动态的改变query_cache_size的值在某个时间仍然可以支持缓存。
2、全局/会话内存缓冲区
1）max_heap_table_size
这个变量定义了MySQL MEMORY存储引擎表的最大容量。当某个表容量超过最大值时，应用程序会收到下面的信息。
mysql> set session ma |