Please suggest a C++ source code analysis tool for debugging memory leak

[Steve martin]

Hi... we are providing software support for one of the famous retailers in U.S. The code has been written in C++. Our field test customers feel that the application software is very slow.
Before we deliver the software to our clients, we are in a urge to improve the performance of the application. Some of our software engineers suspect that the memory dirty pages are too high in the application. They feel that the code have lot of memory leaks. Are there ways to improve the performance of the software?? Is there any tool that finds us the memory leaks in the code? Please suggest?

[godwin24]

Hi, typically, a memory leak occurs because dynamically allocated memory has become unreachable. You can prevent memory leaks by watching for some common problems. Collection classes, such as hash tables and vectors, are common places to find the cause of a memory leak. This is particularly true if the class has been declared static and exists for the life of the application. . The prevalence of memory leak bugs has led to the development of a number of debugging tools to detect unreachable memory. Coverity Prevent is one of the tool that you can use for fixing these kinds of bugs. Coverity Prevent is also used by the Department of Homeland security to scan many open source projects. You can get more info at Coverity webpage