Network Packet Timestamp Tracking for Resource Leak Detection
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Solution Overview
Problem
Current methods for detecting resource leakage in network packets within Linux network protocol stack are inefficient and fail to accurately identify which packets have not released their resources, leading to system performance degradation and potential crashes due to insufficient resources.
Innovation Solution
A resource leak detection method and system that utilizes a tracking list to record resource allocation timestamps of network packets and compares these timestamps with current timestamps to identify packets suspected of resource leakage, allowing for efficient detection and reproduction of the leakage issue.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If current troubleshooting methods are used for resource leakage detection, then the system can operate without additional detection mechanisms, but the debugging efficiency is low and resource leakage cannot be accurately identified
Solution Approach 1:
The patent applies preliminary action by recording resource allocation timestamps when resources are first allocated to network packets. This pre-recording of allocation time enables later detection of resource leakage by comparing current time with the recorded allocation timestamp, allowing accurate identification of packets that have not released their resources after their lifecycle should have ended.
Solution Approach 2:
The patent implements feedback by continuously monitoring and comparing the current timestamp with the recorded resource allocation timestamps in the tracking list. This feedback mechanism identifies packets whose resources should have been released but were not, providing accurate detection of resource leakage cases and enabling targeted debugging actions.
2Productivity
If resource leakage detection is implemented using timestamp tracking, then debugging efficiency and detection accuracy are improved, but the system complexity increases due to the tracking list mechanism
Solution Approach 1:
The patent uses an intermediary approach by introducing a tracking list data structure that stores resource allocation timestamps. This intermediary mechanism mediates between resource allocation events and leakage detection queries, enabling efficient detection without requiring complex analysis of resource usage patterns. The tracking list acts as a simple bridge that records allocation times for later comparison with current time.
3Reliability
If no resource leakage detection is implemented, then the system operates with minimal overhead, but resources continue to leak causing system performance degradation and potential crashes
Solution Approach 1:
The patent applies preliminary action by recording resource allocation timestamps when resources are first allocated to network packets. This pre-recording of allocation time enables later detection of resource leakage by comparing current time with the recorded allocation timestamp, allowing accurate identification of packets that have not released their resources after their lifecycle should have ended.
Data Source
AI summary
A resource leak detection method includes: recording a resource allocation timestamp of a network packet into a tracking list when allocating resources to the network packet; and detecting at least one network packet suspected of resource leak according to a current timestamp and at least one resource allocation timestamp recorded in the tracking list.