https://peertube.watch/videos/watch/11e889c2-0ee6-474d-8384-ac6d9a0f43b7 eBPF permits to run sandboxed programs in the OS kernel, mainly event-driven. It's used to extend the kernel without recompiling it or use modules. eXpress Data Path (XDP) provides a eBPF-based, high performance, programmable network data path in the Linux kernel. It provides bare metal packet processing at the lowest point in the software stack, which makes it ideal for speed. A XDP program returns an action code to tell the kernel what to do with the packet: XDP_PASS, XDP_DROP (and XDP_ABORTED), XDP_TX (and XDP_REDIRECT). This talk, after a brief introduction of what XDP is, presents how redirecting packets, using the XDP_TX return code, can be used to implement a load balancer. It shows how using Direct Server Return can increase the throughput and how to use a consistent hashing algorithm to redirect all the packets of a specific connection to the same backend server. Finally, it explores how the load balancer can be deployed directly to backend servers without the need for a dedicated machine, leveraging the Equal-Cost Multi-Path routing. The presentation of a possible network topology to deploy this load balancer using BPG or static routes completes the seminar. Speaker: Luca Bassi, Track: Network devroom, Room: UB5.230, When: Saturday 3 February 2024, 11:30–11:50 (Brussels time), Schedule: FOSDEM 2024 event page, Slides & links Slides, XDP load balancer source code, Licence: Creative Commons Attribution 2.0 Belgium (CC BY 2.0 BE) (as stated in the FOSDEM video archive). Attribution: “Load balancing using XDP” by Luca Bassi, FOSDEM 2024. Original recording: 2024/ub5230/fosdem-2024-3101-load-balancing-using-xdp.av1.webm from the FOSDEM video archive. This channel is an unofficial mirror; FOSDEM is a free and non-commercial event organised by the community for the community. Thu, 15 Oct 2026 07:02:50 GMT https://validator.w3.org/feed/docs/rss2.html PeerTube - https://peertube.watch https://peertube.watch/lazy-static/avatars/3b284627-b75f-409e-ac2e-10f4c2946f43.png https://peertube.watch/videos/watch/11e889c2-0ee6-474d-8384-ac6d9a0f43b7 All rights reserved, unless otherwise specified in the terms specified at https://peertube.watch/about and potential licenses granted by each content's rightholder.