slow query log

MySQL Slow Query Log) Like most relational databases, log files are an important part of MySQL databases. MySQL has several different log files, such as error log files, binary logs, common logs, and slow query logs. These logs help us locate the

1, PHP slow script log intermittent 502, is caused by the failure of the back-end PHP-FPM, intermittent 502 is generally considered to be caused by the restart of the PHP-FPM process. An intermittent 502 error occurs when the number of child

MySQL slow query log and MySQL Log MySQL has a log called slow query log, which is mainly used to record time-consuming query operations.   . Through this log, we can analyze which operations affect performance, and we need   Some optimization

First, the concept part:As the name implies, the slow query log is a long execution of query, which is what we often call slow query, by setting--log-slow-queries[=file_name] to open the function and set the record location and file name, The

MySQL has a log, called the slow query log , is mainly used to record some time-consuming queryFor With this log we can analyze what operations are impacting performance, and we need toPerform some optimization measures.View open StatusAbove is the

A: Background introductionTwo: Edit modify slow query log scriptThree: Join a timed task1. If all the slow query logs are placed in a file, it is a long time to see the slow query log will be a very painful thing, so you need to split the slow query

Let's take a look at how to read these slow query logs.Before you trace a slow query log, you must first ensure that you have a slow query at least once. If you are not able to make one yourself:[Email protected]# mysql-e ' SELECT SLEEP (8);There's

mysql-Slow Query logtags (space delimited): MySQLTurn on slow query log慢查询是一种mysql提供的日志，记录所有执行时间超过某个时间界限的sql的语句。这个时间界限我们可以指定。在mysql中默认没有开启慢查询，即使开启了，只会记录执行的sql语句超过10秒的语句[Way One]Enter mysql:mysql-uroot-h127.0.0.1-proot# to view the parameters related

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

The slow query log is used to optimize the query statement, the following are several parameters, 5.5 can be later to the subtle (MS)Mysql> Show variables like '%slow% ';+---------------------------+-------------------------------+| variable_name |

One, slow query log configuration Turn on the slow query log to configure the sample: /etc/mysql/my.cnf[Mysqld]Log-slow-queries Add the above configuration entry in the MY.CNF configuration file and restart the MySQL service, when the MySQL slow

First, Introduction to open the slow query log, you can let the MySQL record query over a specified time of the statement, through the location analysis performance bottlenecks, to better optimize the performance of the database systemSecond,

Go to MySQL database and useShow variables like ' Slow_query_log ';See if the slow query log is turned onValue is off, the slow query log is not turned on, and before we turn on the slow query log, we want to determine whether the query that does

First, the environmentOs:centos Release 5.8 (64-bit)db:mysql5.5.17Second, the operation Delete the slow query log directly from the command rm-fThird, problems ariseSlow query log is not automatically generated, (if there is a backup, copy back

First we look at the log in MySQL, mainly includes: error log, query log, slow query log, transaction log, binary log;Logs are an important part of the MySQL database. The log file records the changes that occurred during the MySQL database

Slow query logs can contain session_start () and php projects such as online. in the slow query log file, the code session_start () is always displayed, this line of code is useful in many places. now, what is the problem? how to handle it? ------

1 Slow query definitionmeans that MySQL logs all SQL statements that execute a time threshold that exceeds the Long_query_time parameter setting. The slow query log is the log that logs these SQL.2 Turn on slow query logLocate the MySQL

This article will introduce the slow query log used by Logstash to collect MySQL , then push it to elasticsearchand create a custom index that will eventually be Kibana Web Showcase.Environment Introduction:Operating system version:centos6.6

1) First, why should I turn on Binlog log and slow query log?Binlog log will be recorded in the database, so adding and deleting the operation, when accidentally delete, empty data, or database system error, this time you can use the Binlog log to

The log is the same as people write diaries, record the past things. But the diary of a person is subjective (remember what you want to remember), and the database log is objective, according to the record content is divided into the following