https://songkou.github.io/tags/qos/Recent content in QoS on Council of ElrondHugoenFri, 24 Jul 2026 13:00:00 +0800https://songkou.github.io/posts/roce-qos-concepts-and-packet-examples/Fri, 24 Jul 2026 13:00:00 +0800https://songkou.github.io/posts/roce-qos-concepts-and-packet-examples/<p>There are many docs that use different terms on QoS — PCP vs CoS, for example, are in fact the same thing. This doc consolidates the QoS concepts and terminology behind RoCEv2 deployments, with decoded packet examples.</p> <p>It is the <strong>concepts companion</strong> to two other posts on this blog: <a href="https://songkou.github.io/posts/rocev2-cisco-cumulus-connectx-end-to-end/">End-to-End RoCEv2 Configuration: Cisco Nexus, Cumulus Linux, and ConnectX</a> is the configuration guide that turns these concepts into working templates, and <a href="https://songkou.github.io/posts/rdma-performance-tuning/">RDMA Performance Tuning</a> covers tuning and packet-loss troubleshooting once the fabric is up.</p>