In order to do this, you need to enable variable log_slow_admin_statements. It can be used to find queries that take a long time to execute and are therefore candidates for optimization and then you can use external tools to bring the report for you, which will talk later.īy default, administrative statements (ALTER TABLE, ANALYZE TABLE, CHECK TABLE, CREATE INDEX, DROP INDEX, OPTIMIZE TABLE, and REPAIR TABLE) do not fall into slow query logs. Basically, the slow query logs work as SQL statements that take more than long_query_time seconds to execute and also require at least min_examined_row_limit rows to be examined. If this variable is not set, it will use the DATA_DIR of your MySQL data directory.Īccompanied by the slow_query_log variable are the long_query_time and min_examined_row_limit which impacts how the slow query logging works. You must ensure that the variable slow_query_log is set to ON, while the slow_query_log_file determines the path where you need to place your slow query logs.
| slow_query_log_file | /var/log/mysql/mysql-slow.log | To deal with this, you can go to your server and query the following variable: MariaDB > show global variables like 'slow%log%' You need to determine first if your slow query logs are enabled. There are various ways you can investigate these, but the most common and efficient way is to use the slow query logs. MySQL has the capability to filter and log slow queries.
MYSQL SPEED UP QUERY HOW TO
In this blog, we’ll deal with slow queries and how to identify these. Sometimes these problems are, in fact, due to slow queries.
Performance issues are common problems when administering MySQL databases.
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