I have a large (~100K lines) C++ server application that exhibits memory
 problems: after about 6 hours of high volume use, it can reach RAM
levels of 1.3GB which is unacceptable.

Most leak detection or C++ memory profiling tools are targeted at the
really blatant traditional C/C++ leaks where a certain piece of
frequently used code calls new/malloc and has no matching delete/free.

My application really isn't this simple. The bulk of my app's RAM use is
through Boost smart pointers, STL collections, and STL strings. I see
excellent profiling tools for Java/C# such as JProbe which help diagnose
such complex memory use issues but I really don't see a parallel for C++.

I've tried the leak detection system built into VC++, Purify, and a few
other tools but none of them prove fruitful.

I've manually reviewed any use of new/malloc and everything looks OK.
I'm more inclined to suspect that a data cache has grown too large, or
there is just too much of a certain kind of data in RAM. Basically, the
kind of "leaks" that are also present in Java/C# development and not the
simple C/C++ style memory leak.

Any ideas/suggestions? Would getting a Microsoft Managed C++ build of my
application help anything? A complete transition to C#/Java is obviously
way too involved at this point and is out of the question.

thanks!