Linux Storage System Bottleneck for eMMC and UFS

Explore the intricacies of Linux storage system bottlenecks for eMMC and UFS in this 40-minute conference talk presented by Bean Huo and Zoltan Szubbocsev from Micron. Delve into the misconception that storage devices are the primary bottleneck for I/O performance, and examine how this belief drives the demand for faster storage interfaces. Gain insights into the parameters affecting I/O performance and understand how Linux manages I/O requests from user space. Investigate the performance limitations within the Linux eMMC/UFS subsystem and uncover software-induced bottlenecks through Ftrace analysis. Learn about the challenges in maximizing performance for flash-based high-speed storage devices and discover potential areas for future optimization in the existing storage stack. This talk aims to provide a comprehensive overview of storage system performance, motivating attendees to consider improvements in the Linux storage subsystem.