MySQL 在512M一下内存优化配置
为什么80%的码农都做不了架构师?>>>
MySQL设置项
下面一张表格是我从国外的一个博客里边摘抄下来的MySQL的一些默认配置项和最低设置参数。
设置项 | 默认 | 最低 |
innodb_buffer_pool_size | 128M | 5M |
innodb_log_buffer_size | 1M | 256K |
query_cache_size | 1M | 0 |
max_connections | 151 | 1 (推荐最低设置为10) |
key_buffer_size | 8388608 | 8 |
thread_cache_size | (自动配置) | 0 |
host_cache_size | (自动配置) | 0 |
innodb_ft_cache_size | 8000000 | 1600000 |
innodb_ft_total_cache_size | 640000000 | 32000000 |
thread_stack | 262144 | 131072 |
sort_buffer_size | 262144 | 32K |
read_buffer_size | 131072 | 8200 |
read_rnd_buffer_size | 262144 | 8200 |
max_heap_table_size | 16777216 | 16K |
tmp_table_size | 16777216 | 1K |
bulk_insert_buffer_size | 8388608 | 0 |
join_buffer_size | 262144 | 128 |
net_buffer_length | 16384 | 1K |
innodb_sort_buffer_size | 1M | 64K |
binlog_cache_size | 32K | 4K |
binlog_stmt_cache_size | 32K | 4K |
MySQL优化设置
依据以上参数,MySQL的最小配置为:
# /etc/my.cnf:
innodb_buffer_pool_size=5M
innodb_log_buffer_size=256K
query_cache_size=0
max_connections=10
key_buffer_size=8
thread_cache_size=0
host_cache_size=0
innodb_ft_cache_size=1600000
innodb_ft_total_cache_size=32000000# per thread or per operation settings
thread_stack=131072
sort_buffer_size=32K
read_buffer_size=8200
read_rnd_buffer_size=8200
max_heap_table_size=16K
tmp_table_size=1K
bulk_insert_buffer_size=0
join_buffer_size=128
net_buffer_length=1K
innodb_sort_buffer_size=64K#settings that relate to the binary log (if enabled)
binlog_cache_size=4K
binlog_stmt_cache_size=4K
但是并不推荐使用最小配置,可以适当修改一下。
在另外一个博客上找到了一个比较适合于512M内存的配置:
# Example MySQL config file for large systems.
#
# This is for a large system with memory = 512M where the system runs mainly
# MySQL.
#
# MySQL programs look for option files in a set of
# locations which depend on the deployment platform.
# You can copy this option file to one of those
# locations. For information about these locations, see:
# http://dev.mysql.com/doc/mysql/en/option-files.html
#
# In this file, you can use all long options that a program supports.
# If you want to know which options a program supports, run the program
# with the "--help" option.# The following options will be passed to all MySQL clients
[client]
#password = your_password
port = 3306
socket = /var/lib/mysql/mysql.sock# Here follows entries for some specific programs# The MySQL server
[mysqld]
port = 3306
socket = /var/lib/mysql/mysql.sock
skip-external-locking
key_buffer_size = 256M
max_allowed_packet = 1M
table_open_cache = 256
sort_buffer_size = 1M
read_buffer_size = 1M
read_rnd_buffer_size = 4M
myisam_sort_buffer_size = 64M
thread_cache_size = 8
query_cache_size= 16M
# Try number of CPU's*2 for thread_concurrency
thread_concurrency = 8# Don't listen on a TCP/IP port at all. This can be a security enhancement,
# if all processes that need to connect to mysqld run on the same host.
# All interaction with mysqld must be made via Unix sockets or named pipes.
# Note that using this option without enabling named pipes on Windows
# (via the "enable-named-pipe" option) will render mysqld useless!
#
#skip-networking# Replication Master Server (default)
# binary logging is required for replication
log-bin=mysql-bin# binary logging format - mixed recommended
binlog_format=mixed# required unique id between 1 and 2^32 - 1
# defaults to 1 if master-host is not set
# but will not function as a master if omitted
server-id = 1# Replication Slave (comment out master section to use this)
#
# To configure this host as a replication slave, you can choose between
# two methods :
#
# 1) Use the CHANGE MASTER TO command (fully described in our manual) -
# the syntax is:
#
# CHANGE MASTER TO MASTER_HOST=<host>, MASTER_PORT=<port>,
# MASTER_USER=<user>, MASTER_PASSWORD=<password> ;
#
# where you replace <host>, <user>, <password> by quoted strings and
# <port> by the master's port number (3306 by default).
#
# Example:
#
# CHANGE MASTER TO MASTER_HOST='125.564.12.1', MASTER_PORT=3306,
# MASTER_USER='joe', MASTER_PASSWORD='secret';
#
# OR
#
# 2) Set the variables below. However, in case you choose this method, then
# start replication for the first time (even unsuccessfully, for example
# if you mistyped the password in master-password and the slave fails to
# connect), the slave will create a master.info file, and any later
# change in this file to the variables' values below will be ignored and
# overridden by the content of the master.info file, unless you shutdown
# the slave server, delete master.info and restart the slaver server.
# For that reason, you may want to leave the lines below untouched
# (commented) and instead use CHANGE MASTER TO (see above)
#
# required unique id between 2 and 2^32 - 1
# (and different from the master)
# defaults to 2 if master-host is set
# but will not function as a slave if omitted
#server-id = 2
#
# The replication master for this slave - required
#master-host = <hostname>
#
# The username the slave will use for authentication when connecting
# to the master - required
#master-user = <username>
#
# The password the slave will authenticate with when connecting to
# the master - required
#master-password = <password>
#
# The port the master is listening on.
# optional - defaults to 3306
#master-port = <port>
#
# binary logging - not required for slaves, but recommended
#log-bin=mysql-bin# Uncomment the following if you are using InnoDB tables
#innodb_data_home_dir = /var/lib/mysql
#innodb_data_file_path = ibdata1:10M:autoextend
#innodb_log_group_home_dir = /var/lib/mysql
# You can set .._buffer_pool_size up to 50 - 80 %
# of RAM but beware of setting memory usage too high
#innodb_buffer_pool_size = 256M
#innodb_additional_mem_pool_size = 20M
# Set .._log_file_size to 25 % of buffer pool size
#innodb_log_file_size = 64M
#innodb_log_buffer_size = 8M
#innodb_flush_log_at_trx_commit = 1
#innodb_lock_wait_timeout = 50[mysqldump]
quick
max_allowed_packet = 16M[mysql]
no-auto-rehash
# Remove the next comment character if you are not familiar with SQL
#safe-updates[myisamchk]
key_buffer_size = 128M
sort_buffer_size = 128M
read_buffer = 2M
write_buffer = 2M[mysqlhotcopy]
interactive-timeout
链接:
1.Configuring MySQL to use minimal memory
2.Mysql sample configuration with 512M ram
- 原文链接: https://blog.kuoruan.com/72.html
- 转载自:Index 2015年12月9日 于 扩软博客 发表
转载于:https://my.oschina.net/asddsa/blog/1605465
MySQL 在512M一下内存优化配置相关推荐
- mysql内存数据库性能_Mysql内存表配置及性能测试
centos7 mysql数据库安装和配可以参考一下文章,基本照做就可以了(我选的方法二): http://www.cnblogs.com/starof/p/4680083.html 说到内存表,首先 ...
- redis学习笔记(5)之redis内存优化
redis内存优化 配置优化 Linux 配置优化 Redis配置优化 缩减键值对象 命令处理 缓存淘汰优化 动态改配置命令 设置最大内存 设置淘汰策略 内存淘汰策略 如何选择淘汰策略 内容来源为六星 ...
- MySQL高级 - 内存优化 - MyISAM内存优化
MyISAM 内存优化 myisam存储引擎使用 key_buffer 缓存索引块,加速myisam索引的读写速度.对于myisam表的数据块,mysql没有特别的缓存机制,完全依赖于操作系统的IO缓 ...
- mysql noinstall 布署_mysql-noinstall.zip免安装版的优化配置和精简
1.准备工作 下载mysql的最新免安装版本mysql-noinstall-5.1.53-win32.zip,解压缩到相关目录,如:d:\\ mysql-noinstall-5.1.53-win32. ...
- mysql 内存 优化_MySQL核心参数优化(内存优化)
配置内存 内存组件介绍 Innodb缓冲池(占用物理内存80%) # 控制缓冲池的大小(10G) Innodb_buffer_pool_size # 划分缓冲池几个区域,如果是10G的话划分5个区域, ...
- mysql性能瓶颈分析和内存占用高的优化
微信公众号:我其实目前没有耶 我是一个互联网公司的螺丝钉; 魔术师耿 mysql服务器性能瓶颈分析和内存优化 前言 开发阶段,对项目中mysql使用在代码层面已经做了最大努力的优化: 大表减少关联查询 ...
- mysql 参数优化配置
网站访问量大 怎样优化mysql数据库 MySQL优化的一些建议,单机MySQL的优化我分为三个部分,一是服务器物理硬件的优化,二是 MySQL安装时的编译优化,三是自身配置文件my.cnf的优化:如 ...
- mysql connections参数_MySQL性能优化之max_connections配置参数浅析
mysql的max_connections参数用来设置最大连接(用户)数.每个连接mysql的用户均算作一个连接,max_connections的默认值为100.本文将讲解此参数的详细作用与性能影响. ...
- 《深入浅出MySQL:数据库开发、优化与管理维护(第2版)》一一第 1 章 MySQL的安装与配置...
第 1 章 MySQL的安装与配置 深入浅出MySQL:数据库开发.优化与管理维护(第2版) 近几年,开源数据库逐渐流行起来.由于具有免费使用.配置简单.稳定性好.性能优良等优点,开源数据库在中低端应 ...
- Hadoop Yarn内存使用优化配置
第一部分Hadoop Yarn内存使用优化配置 在Hadoop2.0中, YARN负责管理MapReduce中的资源(内存, CPU等)并且将其打包成Container. 这样可以精简MapReduc ...
最新文章
- Anaconda中Jupyter notebook打开后闪退问题解决方法
- a data source instance has not been supplied for the datasource 'dataset1'. rdlc
- java正则表达 w,超强变态的正则(\w)((?=\1\1\1)(\1))+讲解
- 怎么用python自动梳理表格_Python将多份excel表格整理成一份表格
- Nginx源码阅读 ---- 模块的初始化过程,工作进程中初始化事件模块
- 服务器与交换机对接链路聚合mode=0模式传输带宽慢问题
- 计算机的it入门知识,IT基础知识入门课程.ppt
- 网狐荣耀代码通读一----登录服务器
- matlab 液压,基于MATLAB液压系统设计与仿真.doc
- 服务器删除的文件不在回收站,删除的文件不在回收站如何恢复?新方法来了
- 使用opencv识别同心圆
- python做事件研究法_35行代码搞定事件研究法(上)
- 多种汉语方言语音落地应用,微软智能语音解锁更多交互场景
- win7 蓝牙4.0 ble驱动_恩智浦发布行业领先的2x2 Wi-Fi 6 +蓝牙解决方案,彻底改变游戏、音频、工业和物联网市场...
- 【项目管理】【SVN】TortoiseSVN清理历史访问记录
- java之枚举类型enum
- 阿里云企业邮箱设置三方平台管理
- 怎么训练兔子在指定的地点大小便
- 为什么有些人赚钱那么容易,有些人却赚不到钱?
- java 自动论坛评论,Java论坛系统巡云轻论坛
热门文章
- C++ 不能在类体外指定关键字static
- yii 学习笔记五、通过gii创建modules(模块)
- skin文件启用智能提示的小技巧
- [藏]常用的匹配正则表达式和实例
- yoga710怎么进入bios_重装系统看不懂bios?超详细中英文翻译,教你1分钟识别bios各项...
- Android学习JNI,使用C调用JAVA语言
- Android 四大组件学习之ContentProvider三
- Android 7.1关机充电流程
- WifiConfiguration 的各字段的填充和修改
- attrib批量显示文件夹_CMD中使用attrib命令设置文件只读、隐藏属性详解