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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 parameters of the query statement, and then the parameterized query after the grouping statistics,

Tags: query log slow file ace log mysql open-res queryFirst, IntroductionTurn on the slow query log, you can let the MySQL record query over a specified time of the statement, through the location analysis of performance bottlenecks, to better optimize the performance of the database system.Second, parameter descriptionSlow_query_log Slow Query Open statusSlow_qu

As we all know, in the case of large traffic, can add node or change the schema can effectively alleviate the database pressure, but all the origin, all from a single MySQL start. The following summarizes some of the experiences that have been used or studied, and some optimizations are made to MySQL, starting with the configuration and adjusting the index.The first step should be to troubleshoot the problem and find the bottleneck, so start with the logturn on

(1) What is my WiFi? Intel's mywifi technology is a technology that extends the functionality of the wireless network module for laptops. My WiFi technology allows users to integrate their laptops with Wireless AP functions, this allows other devices that support wifi to connect to each other and to external networks through the AP function provided by this lapto

in today's network era, almost every family has a wireless router, but many users are often vulnerable to the impact of the network, not only slow down the internet, but also may affect security. Is your home router secure? In fact, if the wireless router does not carry out security settings, it is easy to be outlaws to steal user personal information, and even property loss, so the security of the router is increasingly people pay attention to and at

General log:The geleral log records every query or command received by the server. General log records the query or command, whether it is correct or even contains a syntax error, the record format is {time, ID, command, argument }. It is also because the MySQL server needs to constantly record logs, enabling General log will produce a large amount of system overhead. Therefore, MySQL disables General log by default. You can enable the General log function or change the log storage path by modif

Tags: indicates record Run command Net TLE HTTP LOB Prevention comprehension A recent development team complained that our platform included MySQL cluster, and always reported MySQL's "Heartbeat Error". Analyzed the logs they collected. Did not find the MySQL cluster node network between the problem, but found a very interesting phenomenon, in the MySQL slow log found a lot of slow query. Basically, it take

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 configuration information. show (global) variables like '%slow_query%' Modify variable: Set global variable name = Value Variables related to slow

How can I solve the problem of slow desktop boot? Slow startup and desktop optimization When using a desktop computer, we feel that the boot speed is slow and affects our use. So how can we solve the problem of slow desktop computers? In many cases, the startup speed of a desktop computer is

Cause Analysis and Solution of slow SQL query speed, and cause analysis of slow SQL query speed Cause Analysis and Solution for slow SQL query speed There are many reasons for slow query speed. The following are common causes:　　1. No index or no index is used (this is the most common problem of

What is a slow query?When the query executes more than the specified time (long_query_time) of the MySQL system setting, the query is called a slow query and is logged into the slow query log file.Logging slow query log settings is off, need to be turned on before you can log slow