slow query

Enable mysql slow query log and run mysqldumpslow to view mysqldump BitsCN.com Enable mysql slow query logs and run the mysqldumpslow command to view the logs. The mysql server has a function to detect which SQL statement query is slow, that is,

The following articles mainly introduce the MySQL slow query analysis method. A few days ago, I set a record to query SQL statements that are slower than 1 second in the MySQL database. There are several very well-configured methods, and the names

Slow query log How there will be Session_Start (), online, etc. PHP project, I in the slow query log file, the old prompt out session_start () This line of code, this line of code in many places useful to Now ask: What is the problem ah, how to

For more information about enabling slow query in mysql5.7.10 and mysql5.7.10 As follows: # Add the following code to [mysqld] in/etc/my. cnf: slow-query-log = Onslow_query_log_file =/data/mysql/log/mysql_slow_query.loglong_query_time = timeout =

As shown below: Add the following code to [Mysqld] in the #在/etc/my.cnf: slow-query-log=on Slow_query_log_file=/data/mysql/log/mysql_slow_ Query.log long_query_time=2 log_queries_not_using_indexes = On The first sentence is to open the slow

Some settings for MySQL slow query1) Check to see if MySQL turns on slow query logShow variables like ' Slow_query_log ';2) Set non-indexed records to slow query logset global log_queries_not_using_indexes=on;3) See how long SQL is logged to the

Vim/etc/my.cnf[Mysqld]Slow_query_log = 1Long_query_time = 1 # Defines a query count of more than 1 seconds to slow_queriesLog-queries-not-using-indexes # queries that do not use indexes are also logged in the slow query log

Turn on Slow queryFirst we check if the MySQL server's slow query status is turned on. Execute the following command:650) this.width=650; "Src=" http://images.cnitblog.com/blog/44702/201301/ 23175454-351c6f142b774ac9bbe923faf9482c85.jpg "style="

How to turn on MySQL slow queryLinux View MySQL installation pathFirst, view the file installation pathSince there is more than one place to install the software, all the paths (addresses) that are first said to view the file installation.Take MySQL

The slow query analysis day was originally used to capture relatively "slow" queries, and in the mysql5.1 + version, the functionality of the slow query was enhanced to capture all queries by setting Long_query_time to zero, and the response time of

The slow_query_log_file log becomes very large and it is inconvenient to analyze its input items. We want to generate a slow_query_log_file file every day and analyze this file every day. The slow_query_log_file log becomes very large and it is

Mysql slow query log analysis tool1. mysql-log-filter tool script usage instructions: an analysis tool found on google code provides two executable scripts: python and php. Http://code.google.com/p/mysql-log-filter/ (need to move the ladder to climb

The slow query log of mysql database is a very important auxiliary log for tuning. However, the log format recorded by mysql by default is not friendly enough to read. This is determined by the mysql Logging rules, capture one log. Although the

One, slow query log is what1.　　　　2.　　　　　　3.　　　　　　　　　　　　　　　　　　　　　　　　2, when the slow query log is turned on, what kind of SQL will be recorded in the slow query log?　　　　3. Case1. See how many seconds are currently slow　　　　　　2, set a slow threshold

Installing MysqlslaSource Path: https://github.com/daniel-nichter/hackmysql.comSource Storage Path:/USR/LOCAL/SRC1. Get the source codeIf you don't have a git command, install git firstYum Install Gitcd/usr/local/srcgit clone

Transferred from: http://www.cnblogs.com/gzgccsu/archive/2013/01/23/2873598.html1. What is the use of slow queries?It records all SQL statements that execute more than long_query_time time, helping you to find SQL that executes slowly, so we can

[View system settings for slow queries]Mysql>Show variables like '%slow%';+---------------------------+--------------------------------+|Variable_name|Value|+---------------------------+--------------------------------+|Log_slow_admin_statements|

MySQL Database optimizationI. SQL and index optimizationHow do I find the problematic SQL?Use the MySQL slow query log to monitor efficiency issues with SQLTo see if the slow query log is turned onShow variables like ' Slow_query_log '650)

This article is a guide: how to find inefficient SQL statements in MySQL? This may be a problem for many people, and when MySQL uses the slow query log to locate those SQL statements that perform less efficiently, and start with

MySQL Slow query1. What is the use of slow queries?It records all SQL statements that execute more than long_query_time time, helping you to find SQL that executes slowly, so we can optimize these SQL.2. How do I turn on slow queries?First we check