Host Performance Booster - Introduction and Current Mainline Support Status

Explore the Host Performance Booster (HPB) technology for Universal Flash Storage (UFS) in this informative 47-minute conference talk presented by Jaemyung Lee and Alim Akhtar from Samsung. Gain insights into UFS architecture, its performance advantages over eMMC, and the scope for improvement in read latency. Delve into the concept, overall behavior, data structures, and region management of HPB. Examine benchmark results and user experience improvements achieved through HPB implementation. Learn about the current mainline support status and timeline for HPB in Linux upstream. Understand the architectural overview of UFS subsystems and transactions, providing a comprehensive understanding of this performance-enhancing technology for storage systems.

Intro
Agenda
What is UFS?
Performance: eMMC vs UFS • Performance Comparison with eMMC
Architectural Overview
UFS Subsystem
Transactions in UFS
Scope of Improvement: The Read Latency
What is HPB?
Concept of HPB
Overall Behavior
Data Structure
State change of HPB
Region Management
Benchmark & UX experience
Chunk-Range Result
HPB Linux Upstream Status
Timeline
Conclusion