How to profile memory usage of a C program

Question

I need to figure out which part of a linux program that I am running, is taking how much (either percentage, or absolute) memory. I need to create a profile of multiple such programs, so that I can identify some of the bigger consumers of memory in my code, and see if I can optimize them to use less. I need it on MIPS platform, and unfortunately, Valgrind doesn't work on MIPS.

Any help/pointers would be greatly appreciated.

Answer 1

Beside Valgrind, there exists a lot of other memory debugger/profiler. All the following seems to support MIPS (but I've not tried them on that architecture) :

jemalloc , CCMALLOC , mpatrol , NJAMD , Dmalloc , and even Google's own google-perftools .

Answer 2

You could wrap all your calls to free and malloc with your own functions in which you also supply for instance in which file and at what line number each allocation is done. From this information it's easy to see what memory is being used where.

Answer 3

You can use Google's perftools for memory profiling. The project provides a very fast, multi-threaded malloc implementation , a Heap profiler , a Heap checker and a CPU profiler.

Answer 4

Memory consumption should not be massively affected by the underlying processor architecture so you might be able to do the memory profiling on x86 Linux. Yes, the absolute amounts of memory probably are a affected but as you're looking more for relative than absolute numbers, this should work.

That said, this solution is unlikely to be an option if a Linux x86 build is more than a recompile away.