https://lesitedefrancois.be/en/tags/userspace/Recent content in Userspace on Le Site de FrançoisHugo -- gohugo.ioen© 2026 Françoishttps://lesitedefrancois.be/en/telco/dpdk/Mon, 01 Jan 0001 00:00:00 +0000https://lesitedefrancois.be/en/telco/dpdk/<p>The <strong>Data Plane Development Kit (DPDK)</strong> is an <strong>open-source</strong> set of libraries and <strong>poll-mode drivers (PMDs)</strong> that move <strong>packet processing</strong> from the kernel to <strong>userspace</strong>, enabling telco and cloud applications to achieve <strong>millions of packets per second</strong> per core with <strong>predictable latency</strong>. DPDK bypasses the traditional socket stack: applications <strong>busy-poll</strong> NIC queues (or <strong>virtio/vhost</strong> rings), use <strong>hugepages</strong> to reduce TLB misses, and pin threads to <strong>NUMA-local</strong> cores — a model suited to <strong>UPF</strong>, <strong>vRouter</strong>, <strong>CG-NAT</strong>, <strong>load balancers</strong>, and <strong>5G user-plane</strong> functions where per-packet syscall overhead is unacceptable.</p>