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HomeDatabaseMysql TutorialMySql 5.6 调整buffer和查询缓存的大小

MySql 5.6 调整buffer和查询缓存的大小

Jun 07, 2016 pm 03:46 PM
buffermysqlsizeInquirecachenetAdjustment

在网上找了好久,都是linux下的配置文件,原来windows下的配置文件在mysql的安装目录下的my.ini, 只用把里边想要配置的参数改一下,去掉前面的注释就可以了,文件里写的很清楚, 其实比较重要的一个参数也就是innodb_buffer_pool_size,大小调整为内存的50%

在网上找了好久,都是linux下的配置文件,原来windows下的配置文件在mysql的安装目录下的my.ini,

只用把里边想要配置的参数改一下,去掉前面的注释就可以了,文件里写的很清楚,

其实比较重要的一个参数也就是innodb_buffer_pool_size,大小调整为内存的50%-80%就好

查询缓存的大小默认为2M, 并不是越大越好,由于是connection级的参数,过大的设置+高并发可能会耗尽系统内存资源。例如:500个连接将会消耗 500*sort_buffer_size(8M)=4G内存


我的系统是winxp,内存4G,刚装上Mysql时的查询缓存原始配置是:

mysql> show variables like 'query_cache_%';
+------------------------------+---------+
| Variable_name                | Value   |
+------------------------------+---------+
| query_cache_limit            | 1048576 |
| query_cache_min_res_unit     | 4096    |
| query_cache_size             | 0       |
| query_cache_type             | OFF     |
| query_cache_wlock_invalidate | OFF     |
+------------------------------+---------+
5 rows in set


mysql> show status like 'Qcache%';
+-------------------------+-------+
| Variable_name           | Value |
+-------------------------+-------+
| Qcache_free_blocks      | 0     |
| Qcache_free_memory      | 0     |
| Qcache_hits             | 0     |
| Qcache_inserts          | 0     |
| Qcache_lowmem_prunes    | 0     |
| Qcache_not_cached       | 0     |
| Qcache_queries_in_cache | 0     |
| Qcache_total_blocks     | 0     |
+-------------------------+-------+


配置过后:

大部分是按这篇文章配置的:http://blog.csdn.net/txwcan999/article/details/2217435



参考文献:

关于MySQL的查询缓存-yaya888-ChinaUnix博客
http://blog.chinaunix.net/uid-570310-id-2734848.html

mysql缓存查询和设置global query_cache_size_百度文库
http://wenku.baidu.com/link?url=e8E3W5_OjHKSai3UJPkROFn4mQOJZgvBmu_BKeMVmd3UZdAAbrq80PGUUAmJrzyFDH9WqFhNzeiq6EXsjUIPoO9Z5UVJ-C4vwYuWdM9nl9W

如何调整MySQL查询缓冲 - MySQL性能与调优 - TechTarget数据库
http://www.searchdatabase.com.cn/showcontent_42327.htm

五大类MySQL参数设置-xp系统之家,Windows7系统下载,windows7旗舰版,最新电脑系统下载
http://www.ezit.com.cn/article/html/3008.html

InnoDB 中文参考手册 --- 犬犬(心帆)翻译
http://man.chinaunix.net/database/mysql/inonodb_zh/2.htm

mysql服务性能优化—my.cnf配置说明详解(16G内存)_Linux系统运维 - 专业的linux运维学习与交流社区
http://www.linuxyw.com/a/shujuku/20130506/216.html

动态修改MYSQL配置参数 - 浮白 - 博客频道 - CSDN.NET
http://blog.csdn.net/turkeyzhou/article/details/5741626

MySQL参数调整_老王的技术手册 ( 我的新博客:http://huoding.com )_百度空间
http://hi.baidu.com/thinkinginlamp/item/69595079339dab346cc37c6d

对MySql查询缓存及SQL Server过程缓存的理解及总结 - JeffWong - 博客园
http://www.cnblogs.com/jeffwongishandsome/p/3235177.html

MySQL参数调优 | P.Linux Laboratory
http://www.penglixun.com/tech/database/mysql_parameter_tuning.html

MYSQL缓冲区和缓存设置 - 建站学
http://database.jzxue.com/mysql/200910/20-2982.html






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