OS Optimizations for Mulitple Flash SSDs (2013 – 2015)

Overview

Explored OS-level optimizations to minimize I/O overhead and improve throughput for modern flash storage.

• Designed an adaptive I/O scheduler for reducing contention in multi-threaded workloads.
• Investigated kernel-level modifications to optimize NVMe SSD performance.
• Published findings in USENIX ATC’14.

Technology

• Linux Kernel 3.2.40
• Custom Linux kernel block device driver for multiple AHCI SATA 3.0 SSDs
• Custom Linux software RAID driver

Publications

• Shin et al., “OS I/O Path Optimizations for Flash Solid-state Drives”, USENIX ATC14