Miao Tech Notes

Personal study notes on Linux kernel networking, eBPF, and distributed systems.

Understanding TCP BBRv3 Congestion Control in Linux 6.x

Published Oct 18, 2026 · 6 min read

Bandwidth-delay product (BDP) estimation remains central to modern congestion control. In this note we examine how BBR pacing gains adapt under shallow buffer switches...

Notes on Memory Ordering and Lock-Free Ring Buffers in Rust

Published Sep 29, 2026 · 8 min read

When designing single-producer single-consumer queues across NUMA nodes, Acquire/Release semantics avoid unnecessary full memory barriers on x86_64 and ARM64...