mysql slow

1. The configuration is enabled.Linux: In the mysql configuration file my. add log-slow-queries =/var/lib/mysql/slowquery in cnf. log (specify the location where the log file is stored, which can be null, the system will give a default file

How to enable slow query in MySQL 1. The configuration is enabled. Linux: Add Log-Slow-queries =/var/lib/MySQL/slowquery. Log (specify the location where the log file is stored, which can be empty and the system will give a default file

MySQL Benefits:Easy to use, low cost, easy to expand, replication leadingThe life cycle of MySQL:MySQL server listener 3306 port > Authenticate Access user > create MySQL thread > Check memory (qcache) > Parse sql> generate query plan > Open Table >

Recently, 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

Directory I. Optimization Overview Ii. query and index optimization Analysis 1. performance bottleneck locating Show command Slow query log Explain analysis Query Profiling Analysis Query   2 Index and Query Optimization Iii. Configuration

Forwarding Original address: http://www.cnblogs.com/hanzhao1987/p/6100096.htmlMySQL Benefits:Easy to use, low cost, easy to expand, replication leadingThe life cycle of MySQL:MySQL server listener 3306 port > Authenticate Access user > create MySQL

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

For most programmers, the most easily discovered and solved problem is MySQL's slow query or no indexed query, so here's how to use the official Mysqldumpslow tool to easily view this information. How to open a slow query for MySQL,MySQL Slow query

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

Mysql has a function to log down and run slow SQL statements. This log is not available by default. To enable this function, modify my. cnf or add some parameters when mysql is started. If you modify it in my. cnf, add the following

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 the log file every day. How to cut by day? We have come up with this method to

Configure slow queryThe default my. cnf file is in the/etc/directory.Vim/etc/my. cnf# Slow_querySlow_query_log = 1 # enable slow querySlow_query_log_file =/var/lib/mysql/mysql-slow.log # set the slow query pathLong_query_time = 0.01 # set the slow

From: http://parand.com/say/index.php/2009/09/01/finding-and-fixing-slow-mysql-queries/bar.html Edit the my. CNF or my. ini file and remove the comments of the following lines of code: log_slow_queries =

1. Install Mysqlsla The code is as follows Copy Code wget http://hackmysql.com/scripts/mysqlsla-2.03.tar.gzTar zvxf mysqlsla-2.03.tar.gzCD mysqlsla-2.03Perl makefile.plMakeMake install Perl makefile.pl will

To see if the MySQL server's slow query status is turned on: 1 show variables like'%slow%'; Slow_launch_time, which means more than

MySQL has a function is log down to run the slower SQL statement, the default is not this log, in order to open this function, to modify the my.cnf or in the MySQL boot when the add some parameters. If you modify inside the MY.CNF, add the following

Enable slow Log There are two ways to enable: 1, in MY.CNF through Log-slow-queries[=file_name] 2, when the mysqld process is started, specify the--log-slow-queries[=file_name] option Five common tools for

Edit the MY.CNF or My.ini file to remove the comments from the following lines of code: Copy Code code as follows: Log_slow_queries =/var/log/mysql/mysql-slow.log Long_query_time = 2 Log-queries-not-using-indexes This

After the recent installation of MYSQL5 on a Linux server, local use of clients even the MySQL speed is very slow, local program connection is also very slow.Workaround: add skip-name-resolve under [mysqld] of the configuration file MY.CNF. The

View status show VARIABLES like '%slow_query_log% 'Turn on set global show_query_log=1 (fail after reboot)Permanent effect Modification MY.CNF joinSlow_query_log=1Show_query_log_file=/var/lib/mysql/at-slow.logModify Time Threshold (default is