Alibaba Cloud Native

May 25, 2025 · Cloud Native

Why OSSFS 2.0 Outperforms 1.0 for AI Workloads on ACK Clusters

The article explains how Alibaba Cloud's OSSFS 2.0 redesign—dropping full POSIX semantics, leveraging FUSE 3 low‑level APIs, a lightweight metadata cache and internal coroutine technology—delivers up to 18‑fold faster sequential writes, 8.5‑fold faster reads and 280‑fold higher small‑file concurrency compared with OSSFS 1.0, making it ideal for AI training and inference in Kubernetes (ACK) environments.