In MySQL you can use to find out the slow running slow SQL statements.
1. Review the slow check in the MySQL command line: show variables like '% query%'
FIG "ON" indicates the slow investigation has been opened, is "OFF" off.
2. Open slow search set global slow_query_log = ON
3. Slow set time limit check, if the time exceeds the set will be recorded into the search log slow.
set long_query_time=“秒”
4. Set the storage path log file path global slow_query_log_file = "Path"
Global log_ouput 5. format output file = file
Can slow query permanently open, the input to the code modification mysql configuration file following the "[mysql]"
= the ON slow_query_log
slow_query_log_file = "log file storage path"
long_query_time = "slow search restrictions seconds"