Near-Memory Protocol Analyzer for High-Speed Packet Trace Logging
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing memory devices lack efficient methods to monitor and log traffic on interconnect buses between host devices and memory arrays without interfering with host-memory communications, requiring expensive hardware and software tools for trace-level performance analysis.
Innovation Solution
Embedding a protocol analyzer within the memory controller allows for high-speed logging of packet trace data directly in the memory array, reducing bandwidth demand and enabling real-time feedback without disrupting normal memory operations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If external hardware and software tools are used for protocol analysis, then measurement precision is improved, but device complexity and cost increase
Solution Approach 1:
The patent merges the protocol analyzer functionality directly into the memory controller by integrating a packet capture unit and a protocol analysis unit within the same controller architecture. This consolidation eliminates the need for separate external analysis tools while maintaining comprehensive protocol analysis capability, thereby reducing system complexity and cost without sacrificing measurement precision
Solution Approach 2:
The memory controller is designed with multi-functionality, serving both as a memory management device and as a protocol analysis instrument. The controller's interface circuitry handles both normal memory operations and protocol capture/analysis functions, allowing a single device to perform multiple roles and eliminating the need for dedicated external analysis hardware
2Measurement precision
If external tools are used for traffic monitoring, then measurement precision is improved, but ease of operation deteriorates
Solution Approach 1:
The memory controller performs self-monitoring and self-analysis of traffic on the interconnect bus. The packet capture unit automatically captures traffic, and the protocol analysis unit independently analyzes it without requiring external tools or complex setup procedures. This self-service capability simplifies operation while maintaining high measurement precision
3Productivity
If bandwidth is allocated for logging packet trace data, then productivity is improved, but loss of energy increases
Solution Approach 1:
The patent extracts packet trace data logging from the main data transfer path and implements it as a separate, dedicated function within the memory controller. The packet capture unit selectively captures only relevant protocol information and metadata, separating this logging function from full data throughput operations. This extraction enables efficient logging at reduced bandwidth consumption by focusing only on essential trace information
Data Source
AI summary
Devices and methods are disclosed, including receiving, by a memory controller of a memory device, a memory request from a host device; collecting packet trace data from the memory request; including the packet trace data in a log stored in a memory array of the memory device; and returning the log to the host device.