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Essays-66 Articles-0 comments-MySQL slow query (ii)-Pt-query-digest detailed slow query log one, Introduction Pt-query-digest is a tool for analyzing MySQL slow query, it can analyze Binlog, Gene RAL Log, Slowlog, can also be analyzed via showprocesslist or MySQL protocol data captured by Tcpdump. The analysis results can be exported to a file, the analysis proce

MySQL Slow Query Log (Slow Query Log), mysqlslow 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 internal events of mysqld, database performance faults, record the change history of data,

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, database performance failures, record data change histories, user recovery databases, and more. This article mainly describes the general query log.1, the MySQL log file system compositio

MySQL Slow queryIn web development, we often write some SQL statements, a bad SQL statement may make your entire program very slow, more than 10 seconds the average user will choose to close the Web page, how to optimize the SQL statement to run those long-running SQL statements to find out? MySQL provides us with a very good feature, that is slow query! The so-c

The query is the most problematic database response. Most databases now provide the means to help with performance analysis. Oracle, for example, will help you find the slow statements directly and provide an optimization solution. In MySQL, you have to open slow logging to analyze (records can be saved in a table or file, the default is saved in the file, our system is using the default method). First loo

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 MySQL, you need to enable slow log records for

When MySQL uses the slow query log to locate those SQL statements that perform less efficiently, and start with the--log-slow-queries[=file_name] option, Mysqld writes a full execution time of more than Long_ Query_time The log file of the SQL statement for the second, by looking at this log file to locate the less efficient SQL.The slow query log is not logged a

Slow query log: all SQL statements that run longer than long_query_time in MySQL slow query log records help you find slow SQL statements, so that we can optimize these SQL statements. Slow query log configuration: by default, mysql does not enable slow query logs. [Root @ r

Tags: mysql optimized sql slow logRecently, a development team complained that our platform contains MySQL cluster not, always reported the MySQL "Heartbeat Error", analyzed the logs they collected, did not find the network between the MySQL cluster node problem, but found a very interesting phenomenon , in the MySQL slow log found a large number of slow queries,

Open MySQL Slow query MySQL Slow query log for tracking Php+mysql system under the MySQL load tuning problem is very useful, such as installing a lot of discuz! plug-ins users, so you can probably troubleshoot those plug-ins have code problems. In fact, the slow query log to enable MySQL is very simple, only need to add log-