Hi,
sorry but I couldn't understand exactly what you need. My advice is for you to tune your environment(network, O.S and WebLogic), look at:
http://edocs.bea.com/wls/docs70/perform/index.html this usually increases performance a lot.
Also I suggest you to take a
thread dump when the sever is almost overloaded as doing so you'll be able to find out if there`s something wrong with application or some resource used in it.
regards.