mysql slow query

Note: This article is the third of our series of PHP performance analysis, click here to read PHP performance analysis first: Xhprof & Xhgui Introduction, or PHP performance analysis second: In-depth study of Xhgui.In the first chapter of this

How to install and configure Box Anemometer? Box Anemometer is a very good MySQL slow query visualization tool platform, the specific is not detailed, the official website is https://github.com/box/Anemometer Recently, I have started a manual setup.

Today, developers are constantly developing and deploying applications that use the LAMP (Linux, Apache, MySQL, and PHPPerl) architecture. However, the server administrator often has no control over the application itself, because the application is

This article mainly introduces how to handle the faults caused by slow MySQL queries. slow queries are a convenient feature that we often use in mysql, slow query is very useful for queries with tracing problems. For more information about how to

PHP learning arrangements: 1. PHP regular expression 2. PHP design mode 3. MySQL slow query 4. meaning of HTTP 101,202,301,404,502 protocol status words, such 5. linux commands: du/df/wc/ln 6. svn commands in linux 7. Architecture questions:

MySQL database administrator common command manual bitsCN.com 1. mysql remote connection commands can be used to remotely import and export data 　　mysqldump --default-character-set=gb2312 -h255.255.000.00 -uroot -pxxxxxx

How to query MySQL running STATUS: bitsCN. comSHOW STATUS Log on to MySQL directly under the command line to run the show status command. the query statement is as follows: The same statement also has show variables; and show status is used to

At about seven o'clock, I received a complaint from the playback center that the video was playing slowly and could not be loaded for a long time. At first, he thought it was the tomcat service that went down again. So go to the tomcat server At

This afternoon, the website continued to encounter database connection failures. It would be better to restart mysql, but after a while, the database connection failure may occur. Check monitorix and find an exception. Ask tech experts for help. The

This article introduces mysql database optimization and mysql web performance optimization. If you need to know about it, let's take a look. This article introduces mysql database optimization and mysql web performance optimization. If you need to

PHP engineers and php engineers I. http/https protocol, TCP/IP protocol, websocket, session, cookie     Ii. php: oop, thinkphp5, laravel     Iii. mysql, memcache, and redis 3.1 mysql interview questions 3.1.1 MySQL replication principles and

The website access speed is too slow. We need to check all links that may drag down the website speed, here we will share some of the SQL statements in the database that have been executed with low efficiency to help us better optimize our website

Nowadays, developers are constantly developing and deploying LAMP (Linux? , Apache, MySQL, and PHPPerl) architecture applications. However, the server administrator often has no control over the application itself, because the application is

Using mysqlsla to analyze mysql logs mysqlsla is a MySQL Log Analysis Tool launched by hackmysql.com. It can be used to analyze mysql slow query logs and analyze slow queries, it can analyze the execution frequency, scanned data volume, and consumed

Nowadays, developers are constantly developing and deploying LAMP (Linux®, Apache, MySQL, PHP/Perl) architecture applications. However, the server administrator often has no control over the application itself, because the application is compiled by

Log_slow_queries must be enabled for a slow query output. You can set it in the MySQL configuration file (my. ini/my. cnf) or through the MySQL client. The advantage of the second method is that the setting takes effect without restarting the MySQL

There are three methods for MySQL tuning to speed up the running of MySQL servers. The efficiency is from low to high: replacing faulty hardware. Optimize the settings of the MySQL process. Optimize the query. Replacing faulty hardware is usually

As the programmer may not write the best things, we only need to enable the mysql slow query log function to analyze the performance of each SQL statement. Let's take a look at it. In MySQL, the definition time of a slow query is specified by the

Maybe many of you who use the mysql database do not know the following three methods can fly your mysql. Next I will introduce you to several tuning techniques of the mysql server, for more information, see. MySQL OptimizationThere are three ways to

Mysql tuning three steps (slow query and explain profile) often encounter some SQL problems in performance tests. In fact, the most problems encountered in performance tests over the past few years are databases, either high I/O or high cpu, Data