very proffesional Database Adminstration, MySQL to stop my website from keep going down

i am looking for very professional database administration & MySQL who can solve the problems in very short time, my website keep going down you should tweak the PHP codes such that no too PHP process should run for long time or force them to disconnect as soon as they don't need to access the database anymore. As per my observation, many PHP processes was taking high load which was almost near to 99-100%. It could have been because of the more sleep queries. As per my previous experience with other MySQL servers, in servers where there are high sleep queries, the SQL server will get unstable. Hence feel free to tweak the PHP file which makes connection with MySQL/databases." this is one example on 1 online user which take long long time while he finish his work in 3 min 23399 bigfish 20 0 191m 56m 29m R 99.6 2.7 0:18.90 /usr/bin/php or It could be of many reasons.. May be an abusive code snippet or else. In the same time, my website is making high number of MySQL queries too. Please see 5486 | bigfish_user | localhost | bigfish_db | Sleep | 5 | As you can see, you need to be professional to solve this issue