Storage Device Buffer Address Management for Host Data Access
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Solution Overview
Problem
Current storage systems face inefficiencies in data processing performance due to high overhead in operations between hosts and storage devices, particularly in accessing data buffers, which leads to increased latency and reduced throughput.
Innovation Solution
A method and system where a storage device manages and transmits buffer addresses to a host, allowing direct access to data buffers without the need for additional operations to determine their location, thereby reducing the frequency of host memory access and enhancing data processing efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the host determines the location of data buffers through additional operations, then the host can access data buffers, but the data processing overhead increases and performance decreases
Solution Approach 1:
The storage device performs preliminary actions by determining the location of data buffers in advance and including this location information in the first packet transmitted to the host. This eliminates the need for the host to perform additional operations to determine buffer locations, thereby reducing processing overhead and improving data processing performance.
2Productivity
If the host performs additional operations to determine buffer location, then data can be accessed, but the frequency of host memory access increases
Solution Approach 1:
The storage device extracts and includes the location information of data buffers directly in the first packet transmitted to the host. This removes the need for the host to perform additional memory access operations to determine buffer locations, thereby reducing the frequency of host memory access and improving data throughput.
3Productivity
If buffer address information is included in packets, then direct access to data buffers is enabled, but the packet structure becomes more complex
Solution Approach 1:
The storage device merges the location information of data buffers with the first packet that is already being transmitted to the host. By combining these information elements into a single packet, the system enables direct access to data buffers without requiring separate communication overhead, thereby improving data processing efficiency while managing packet structure complexity.
Data Source
AI summary
A method of operating a storage device includes receiving, from a host, a first packet containing a buffer address indicating a location of a data buffer selected from among a plurality of data buffers in the host, parsing the buffer address from the first packet, and transmitting a second packet containing the buffer address to the host in response to the first packet.