Memory Leak Detection via Heap Segmentation and Isolation

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Solution Overview

Problem

Current methods for analyzing memory leaks in production systems are inadequate, as they often require expensive tools, alter application behavior, consume memory, or necessitate server restarts, making it difficult to detect and isolate memory leaks in ongoing execution.

Innovation Solution

A method and service that recursively divide memory sections experiencing abnormal conditions into smaller logical sections, isolate the source of the issue, and reallocate memory, allowing for remote monitoring and management without affecting system performance.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If memory leak analysis tools are used in production systems, then memory leaks can be detected, but system performance degrades and operations are disrupted

Engineering Contradiction:
Improvememory leak detection accuracyVSAvoidsystem performance
Core Design Contradiction:
Measurement precisionVSProductivity

Solution Approach 1:

The patent segments the heap memory into multiple isolated sections, each monitored independently. This allows the system to detect memory leaks in specific sections without requiring full-system analysis tools that would degrade overall performance. The segmentation enables localized monitoring that maintains productivity while achieving detection accuracy.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The patent introduces memory isolation sections as intermediary structures between the application and the monitoring system. These isolation sections act as mediators that capture memory allocation data without requiring direct instrumentation of the application code, thus avoiding performance degradation while maintaining detection capability.

Inventive Principle:
Principle #24Intermediary (Mediator)

2Measurement precision

If expensive memory analysis tools are used, then memory leaks can be detected, but costs increase

Engineering Contradiction:
Improvememory leak detection accuracyVSAvoidcost
Core Design Contradiction:
Measurement precisionVSQuantity of substance

Solution Approach 1:

The patent implements a self-service monitoring mechanism where the system automatically tracks memory allocation within isolated sections using lightweight metadata. This eliminates the need for expensive external analysis tools by providing built-in detection capability that achieves accuracy without high costs.

Inventive Principle:
Principle #25Self-service

Solution Approach 2:

The patent uses lightweight, disposable metadata structures to track memory allocation in each isolation section. These cheap tracking structures are created and discarded as needed, providing effective memory leak detection without requiring expensive persistent analysis tools.

Inventive Principle:
Principle #27Cheap short-living objects (Disposable)

3Measurement precision

If memory analysis alters application behavior, then memory leaks can be detected, but the application's original behavior changes

Engineering Contradiction:
Improvememory leak detection accuracyVSAvoidapplication behavior consistency
Core Design Contradiction:
Measurement precisionVSStability of the object's composition

Solution Approach 1:

The patent extracts memory monitoring functionality from the application code itself by using operating system-level memory isolation features. This extraction allows detection of memory leaks without inserting instrumentation code that would alter application behavior, maintaining behavioral consistency while achieving detection accuracy.

Inventive Principle:
Principle #2Taking out (Extraction)

4Measurement precision

If server restarts are performed to analyze memory leaks, then the source can be identified, but operations are disrupted

Engineering Contradiction:
Improvememory leak source identificationVSAvoidoperational downtime
Core Design Contradiction:
Measurement precisionVSLoss of time

Solution Approach 1:

The patent enables continuous memory monitoring within isolated heap sections during production operation. By maintaining monitoring continuity without requiring system restarts, the system can identify memory leak sources while operations continue uninterrupted, eliminating operational downtime while achieving source identification.

Inventive Principle:
Principle #20Continuity of useful action

Data Source

PatentUS7895483B2Software memory leak analysis using memory isolation
Publication Date: 2011.02.22 WRP IP MANAGEMENT LLC
  • US7895483B2 patent drawing
  • US7895483B2 patent drawing
  • US7895483B2 patent drawing

AI summary

A computerized method, program product, and a service that allocates and isolates leaky memory during the execution of an application in a data processing system. A memory controller having several components first identifies a leaky section of memory and delegates to an allocation component to allocate more memory if possible. If, however, the problematic memory section should not be allocated more memory, an isolator component can isolate the memory section and further divide the memory section into subsections and so on. Each section and each subsection may then be tested to determine if more memory can be allocated, tested to determine if memory resources are strained so as to identify the application or its component causing the strain and then binding the memory. Each section and subsection and 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. The software component associated with the leaky memory section or subsection can also be taken out-of-service.