hello thank you for reply
i already activate slow queries log , so i have
Query_time: 306.821575 Lock_time: 261.526527 Rows_sent: 10 Rows_examined: 20
some errors in apache :
[Fri May 20 09:11:09 2016] [error] child process 18063 still did not exit, sending a SIGKILL
[Fri May 20 09:11:09...