Tencent Technical Engineering

Feb 11, 2026 · Backend Development

How WFS Ultra Achieved 200 Gbps TCP Throughput, Surpassing RDMA‑Based 3FS

The article details how the WFS Ultra project re‑engineered a traditional TCP‑based distributed file system with a Run‑To‑Completion thread model, ultra‑core async networking, full‑link zero‑copy, and load‑adaptive prefetch, enabling 200 Gbps Fio throughput that exceeds the RDMA‑accelerated 3FS benchmark.