slow query log analyzer

:0.000000rows_sent:1rows_examined:0 SETtimestamp=1478791222; Selectsleep (3);Mode two: write to the databaseCheck the current log output mode firstMysql> Show variables like '%log_output% '; +---------------+-------+ |variable_name | Value | +---------------+-------+ | log_output | FILE | +---------------+-------+ 1 row in Set (0.00 sec)Set the output mode to File,tablemysql> set global log_output= ' file,table ';

Like most relational databases, log files are an important part of the MySQL database. MySQL has several different log files, usually including error log files, binary logs, generic logs, slow query logs, and so on. These logs can help us locate events inside MYSQLD, databas

Tags: ons slist number partition full table scan nts ges OTA htmFirst, IntroductionPt-query-digest is a tool for analyzing slow queries for MySQL, which analyzes Binlog, general log, Slowlog, It can also be analyzed using showprocesslist or MySQL protocol data crawled by tcpdump. The analysis results can be exported to a file, the analysis process is the paramete

First, IntroductionPt-query-digest is a tool for analyzing slow queries for MySQL, which analyzes Binlog, general log, Slowlog, It can also be analyzed using showprocesslist or MySQL protocol data crawled by tcpdump. The analysis results can be exported to a file, the analysis process is the parameters of the query sta

, the InnoDB log buffer (memory) is written to the log (called by the system to call write), simply to transfer the data to the operating system cache, the operating system cache also refers to memory. There is no persisted data.So at 0 and 2, the last second is lost when a crash or power outage occurs because the data is only present in the operating system cache. It is generally possible to lose more than

the configuration ifMax_requestsIf the number is exceeded, the error 502 will also occur. The setting of max_requests is to prevent insecure third-party library scripts.Memory leakageOf course, your own scripts exist.DeadlockThen, there will also be a 502 phenomenon. If you find that the mysql load is not high, but the php-fpm process count and memory usage are too high, congratulations, most of the time it is because the script has a deadlock. Since it is a php issue, how can I locate the php

A common web site often need to query n SQL statements to get the results of the page, when the Web site access speed is slow and the front-end done a lot of optimization work, the database bottleneck of the search is also an important part of the Web optimization.MySQL provides a slow query logging function, you can

Tags: LAN uses the row service-side COM ref ASE contains includeMySQL Server has four types of logs--error log, General Query log, Binary log, and Slow query log. The first one is the e

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 a

This article describes how to analyze MySQL slow query logs by setting parameters to analyze the causes of performance problems, for more information, see query. Currently, most databases provide performance analysis tools. For example, Oracle will help you find slow statements and provide optimization solutions. In My

MySQL slow query log and MySQL slow log Lab environment:OS X EI Captian + MySQL 5.71. Configure MySQL to automatically record slow query logs View the variable, that is, the configurati

Tags: http knowledge point error variable coin lock table response Long MYQLLogs in MySQL include: error log, binary log, General query log, slow query log, and so on. Here is the main

Label:Use [master]GO/****** Object:audit [Serverauditdb] Script date:2016-04-28 16:02:58 ******/CREATE SERVER AUDIT [Serverauditdb]To FILE(FILEPATH = N ' E:\ServerAuditDB\ ', MAXSIZE = 0 MB, max_rollover_files = 2147483647, Reserve_disk_space = OFF)With(Queue_delay = 1000, on_failure = CONTINUE, Audit_guid = ' 66830c88-99fd-442a-8df2-2f292e25bc5b ')ALTER SERVER AUDIT [Serverauditdb] with (state = ON)GODeng Xiaoping Tomato 16:04:02Small eggplantUse [Ceshi]GOCREATE DATABASE AUDIT specification [Da

Label:MySQL's "slow query" refers to an SQL statement that exceeds the maximum allowable query time ( long_query_time ), and the "unused index" query, by definition, is the SQL statement that the query statement does not use to the index.Slow