Detecting leaky memory during the execution of an application in a data processing system. A memory controller identifies a leaky section of memory and delegates to an allocation component to allocate more memory. An isolator component isolates the memory section and further divides the memory section into subsections. Each section and each subsection are tested to determine if memory resources are strained to identify an application or its component causing the strain. Each section and subsection are further divided and isolated until the leaky portion of memory is identified, and as a result, the software component causing the leak can also be identified.