Home Database Mysql Tutorial Mysql数据库优化系列(二)

Mysql数据库优化系列(二)

Jun 07, 2016 pm 03:27 PM
mysql optimization performance database Check series

一、查看数据库性性能: showstatus; 挑选出几个比较重要的参数 二、AWK简单脚本编程实现数据库性能统计 1.新建Viscore.txt 2.写下如下数据: 3.每秒刷新一次,并写入一个文件进行分析 三、AWK语法简介 Awk 是一个简便的直译式的文本处理工具 . 擅长处理 --

一、查看数据库性性能:

      show status;

      挑选出几个比较重要的参数

      Mysql数据库优化系列(二)

二、AWK简单脚本编程实现数据库性能统计

     1.新建Vi score.txt

     2.写下如下数据:

    Mysql数据库优化系列(二)

    3.每秒刷新一次,并写入一个文件进行分析

   Mysql数据库优化系列(二)

三、AWK语法简介

  

Awk是一个简便的直译式的文本处理工具.擅长处理--多行多列的数据。

处理过程

While(还有下一行) {

1:读取下一行,并把下一行赋给$0,各列赋给$1,$2...$N变量

        2: 用指定的命令来处理该行

}

 

如何处理1行数据?

2部分,   pattern (条件)  + action(处理动作)

 

第1个简单awk脚本

awk  ‘{printf “%s\n” , $1}’ xx.txt  // xx.txt的每一行进行输出

2个简单awk脚本 统计mysql服务器信息

mysqladmin -uroot ext|awk 
'Queries/{q=$4}/Threads_connected/{c=$4}/Threads_running/{r=$4}END{printf("%d %d %d\n",q,c,r)}'


Statement of this Website
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn

Hot AI Tools

Undresser.AI Undress

Undresser.AI Undress

AI-powered app for creating realistic nude photos

AI Clothes Remover

AI Clothes Remover

Online AI tool for removing clothes from photos.

Undress AI Tool

Undress AI Tool

Undress images for free

Clothoff.io

Clothoff.io

AI clothes remover

AI Hentai Generator

AI Hentai Generator

Generate AI Hentai for free.

Hot Article

R.E.P.O. Energy Crystals Explained and What They Do (Yellow Crystal)
3 weeks ago By 尊渡假赌尊渡假赌尊渡假赌
R.E.P.O. Best Graphic Settings
3 weeks ago By 尊渡假赌尊渡假赌尊渡假赌
R.E.P.O. How to Fix Audio if You Can't Hear Anyone
3 weeks ago By 尊渡假赌尊渡假赌尊渡假赌
WWE 2K25: How To Unlock Everything In MyRise
4 weeks ago By 尊渡假赌尊渡假赌尊渡假赌

Hot Tools

Notepad++7.3.1

Notepad++7.3.1

Easy-to-use and free code editor

SublimeText3 Chinese version

SublimeText3 Chinese version

Chinese version, very easy to use

Zend Studio 13.0.1

Zend Studio 13.0.1

Powerful PHP integrated development environment

Dreamweaver CS6

Dreamweaver CS6

Visual web development tools

SublimeText3 Mac version

SublimeText3 Mac version

God-level code editing software (SublimeText3)

MySQL: The Ease of Data Management for Beginners MySQL: The Ease of Data Management for Beginners Apr 09, 2025 am 12:07 AM

MySQL is suitable for beginners because it is simple to install, powerful and easy to manage data. 1. Simple installation and configuration, suitable for a variety of operating systems. 2. Support basic operations such as creating databases and tables, inserting, querying, updating and deleting data. 3. Provide advanced functions such as JOIN operations and subqueries. 4. Performance can be improved through indexing, query optimization and table partitioning. 5. Support backup, recovery and security measures to ensure data security and consistency.

Can I retrieve the database password in Navicat? Can I retrieve the database password in Navicat? Apr 08, 2025 pm 09:51 PM

Navicat itself does not store the database password, and can only retrieve the encrypted password. Solution: 1. Check the password manager; 2. Check Navicat's "Remember Password" function; 3. Reset the database password; 4. Contact the database administrator.

MySQL: Simple Concepts for Easy Learning MySQL: Simple Concepts for Easy Learning Apr 10, 2025 am 09:29 AM

MySQL is an open source relational database management system. 1) Create database and tables: Use the CREATEDATABASE and CREATETABLE commands. 2) Basic operations: INSERT, UPDATE, DELETE and SELECT. 3) Advanced operations: JOIN, subquery and transaction processing. 4) Debugging skills: Check syntax, data type and permissions. 5) Optimization suggestions: Use indexes, avoid SELECT* and use transactions.

How to create navicat premium How to create navicat premium Apr 09, 2025 am 07:09 AM

Create a database using Navicat Premium: Connect to the database server and enter the connection parameters. Right-click on the server and select Create Database. Enter the name of the new database and the specified character set and collation. Connect to the new database and create the table in the Object Browser. Right-click on the table and select Insert Data to insert the data.

How to view database password in Navicat for MariaDB? How to view database password in Navicat for MariaDB? Apr 08, 2025 pm 09:18 PM

Navicat for MariaDB cannot view the database password directly because the password is stored in encrypted form. To ensure the database security, there are three ways to reset your password: reset your password through Navicat and set a complex password. View the configuration file (not recommended, high risk). Use system command line tools (not recommended, you need to be proficient in command line tools).

MySQL and SQL: Essential Skills for Developers MySQL and SQL: Essential Skills for Developers Apr 10, 2025 am 09:30 AM

MySQL and SQL are essential skills for developers. 1.MySQL is an open source relational database management system, and SQL is the standard language used to manage and operate databases. 2.MySQL supports multiple storage engines through efficient data storage and retrieval functions, and SQL completes complex data operations through simple statements. 3. Examples of usage include basic queries and advanced queries, such as filtering and sorting by condition. 4. Common errors include syntax errors and performance issues, which can be optimized by checking SQL statements and using EXPLAIN commands. 5. Performance optimization techniques include using indexes, avoiding full table scanning, optimizing JOIN operations and improving code readability.

How to create a new connection to mysql in navicat How to create a new connection to mysql in navicat Apr 09, 2025 am 07:21 AM

You can create a new MySQL connection in Navicat by following the steps: Open the application and select New Connection (Ctrl N). Select "MySQL" as the connection type. Enter the hostname/IP address, port, username, and password. (Optional) Configure advanced options. Save the connection and enter the connection name.

How to execute sql in navicat How to execute sql in navicat Apr 08, 2025 pm 11:42 PM

Steps to perform SQL in Navicat: Connect to the database. Create a SQL Editor window. Write SQL queries or scripts. Click the Run button to execute a query or script. View the results (if the query is executed).

See all articles