mysql performance

Mysqlslap is a benchmark tool provided by mysql. It has the following advantages: Data Query, simple syntax, and flexible and easy to use. this tool can simulate multiple clients to send query updates to the server concurrently, and provides

After the MySQL service is started, run the showvariables and showstatus commands to view the static parameters and dynamic running status of the Mysql service. Showvariables is used to view MySQL parameters that are not changed after the database

MySQL configuration file my. cnf contains a skip-external-locking parameter by default, that is, the external lock is skipped. According to the official explanation of the MySQL development website, External-locking is used to lock the MySQL

Mysql performance debugging tool profile, mysqlprofile I have been looking for mysql tools similar to Oracle 10046. I can see the time consumption of SQL Execution. I finally found a profile on the Internet. I think it is good to use it. Mysql>

Mysql performance optimization, mysql 1. When using an index to query records, you must pay attention to the index usage, for example: (1) The string configured with the like keyword cannot start with '%' (2) When using multi-column indexes, the

MySQL performance profiling tool (pt-query-digest) This tool is also from percona-toolkitOther tools in this tool setTroubleshooting of abnormal shutdown of MySQL Slave (pt-slave-restart) Verify MySQL master-slave consistency (pt-table-checksum & pt-

You have completed your brand's new application, and everything works like a charm. To use your network. Everyone is happy. Then, suddenly, an explosive user killed your MySQL server and your website was closed. What's wrong? How can you stop

1. Use the explain statement to view the analysis resultsFor example, explain select * from test1 where id = 1; the columns of id selecttype table type possible_keys key key_len ref rows extra are displayed. Where, Type = const indicates that the

MySQL Performance Settings As the website traffic grows, MySQL naturally becomes a bottleneck. Therefore, I have been studying MySQL optimization recently. The first step is to naturally consider MySQL system parameter optimization, as a database

Optimize the performance of the PHP website Mysql from the database, code, and server, and the mysql performance. Database optimization is something that almost always happens during PHP interviews. It is also something we should pay attention to at

MySQL performance optimization and mysql Optimization How to extract a random entry from a data table in MySQL, while ensuring the highest efficiency. Method 1This is the most primitive and intuitive syntax, as shown below:SELECT * FROM foo order by

I read some information about MySQL Performance Online.Article. I have a little bit of experience. Let's just say something! Speaking of MySQL, it is an open-source database tool. If you want to improve performance, you can change it freely. Which

MySQL performance optimization tips Author: ye Jinrong (email :), source: http://imysql.cn, reproduced please indicate the translator and the source, and cannot be used for commercial purposes, offenders must investigate. I. startup Parameter

MySQL Performance settings Web site access is growing, MySQL naturally become a bottleneck, so recently I have been studying MySQL optimization, the first natural thought is the MySQL system parameters optimization, as a large number of visits to

This article describes the MySQL performance bottleneck to troubleshoot the location of the method. Share to everyone for your reference, specific as follows: Guide Speaking from a site, the whole process to resolve how to locate performance

In the MySQL database, the MySQL key_buffer_size is one of the most influential parameters for MyISAM table performance (note that this parameter is not valid for other types of table settings), and the following will be on the MySQL Key_buffer_ The

A row of skip-external-locking parameters exists by default in the MySQL configuration file my.cnf, that is, "Skip external locks." According to the official account of the MySQL development website, external-locking is used for locking MyISAM data

Download and change execution permissions:wget http://www.day32.com/MySQL/tuning-primer.shchmod +x tuning-primer.sh./tuning-primer.sh Results Report:Can be labeled with several colors:Blue: General indicatorsGreen: Indicates that this parameter can

The following article is mainly about the performance of MySQL closely related to the five configuration parameters of the introduction, I saw a few days ago in the relevant web site on the performance of MySQL closely related to the five parameters

This article describes the PHP import of large amounts of data to MySQL performance optimization techniques. Share to everyone for your reference. The specific analysis is as follows: In MySQL, we combine some files into MySQL, here to share my 15,0