High CPU usage PHP-CGI

[Rani_Shoura]

Hi,

For the last week I'm working on a migrated installation of Word Press on Plesk 12.1.8 The server is always crashing with high CPU usage
Using Command ps aux --sort=-%cpu | awk 'NR<=10{print $0}'
I'm getting the below results
USER PID %CPU %MEM VSZ RSS TTY STAT START TIME COMMAND
domain 10301 84.5 2.1 415172 80368 ? S 17:17 0:01 /opt/plesk/php/5.4/bin/php-cgi -c /var/www/vhosts/system/domain.com/etc/php.ini
domain 10266 25.7 2.1 414044 81544 ? S 17:16 0:07 /opt/plesk/php/5.4/bin/php-cgi -c /var/www/vhosts/system/domain.com/etc/php.ini
domain 10270 17.5 2.1 414300 79852 ? S 17:16 0:05 /opt/plesk/php/5.4/bin/php-cgi -c /var/www/vhosts/system/domain.com/etc/php.ini
domain 10264 14.4 2.0 411228 76992 ? S 17:16 0:04 /opt/plesk/php/5.4/bin/php-cgi -c /var/www/vhosts/system/domain.com/etc/php.ini
domain 10269 9.0 1.8 404464 70280 ? S 17:16 0:02 /opt/plesk/php/5.4/bin/php-cgi -c /var/www/vhosts/system/domain.com/etc/php.ini

Any Idea ? I had searched every where , and found nothing.
PS I'm a little bit new to LAMP envinroments