We’re releasing a set of changes that builds on the foundation of our earlier WireGuard performance work, significantly improving UDP throughput on Linux. As with the previous work, we intend to upstream these changes to WireGuard. Our changes improve throughput for HTTP/3, QUIC, and other UDP-based applications through the use of segmentation offloads. UDP throughput over Tailscale increases 4x on bare metal Linux, and pushes past (for now) the in-kernel WireGuard implementation on that hardware. You can experience these improvements in Tailscale v1.54.
Hi, it’s us again. You might remember us from when we made significant performance-related changes to wireguard-go, the userspace WireGuard® implementation that Tailscale uses. We’re releasing a set of changes that further improves client throughput on Linux. We intend to upstream these changes to WireGuard as we did with the previous set of changes, which have since landed upstream.