Multi-core network packet steering: Difference between revisions

Revision as of 03:27, 28 July 2025

Revision as of 01:59, 1 August 2025

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== Software techniques ==

Software techniques like RPS and RFS employ one of the CPU cores to steer incoming packets across the other cores of the processor. This comes at the cost of introducing additional [[Inter-processor interrupt|inter-processor interrupts (IPIs)]]; however the number of hardware interrupts will not increase and potentially, by employing an [[Interrupt coalescing|interrupt aggregation]] technique, it could even be reduced.<ref name="RPS kernel linux docs">{{Cite web|title=RPS kernel linux docs|url=https://www.kernel.org/doc/html/v5.1/networking/scaling.html#rps-receive-packet-steering|access-date=2025-07-08|website=kernel.org|publisher=The Linux Kernel documentation|language=en-US}}</ref><br>

The benefits of a software solutions is the ease in implementation, without having to change any component (like the [[Network_interface_controller|NIC]]) of the currently used architecture, but by simply deploying the proper [[Loadable kernel module|kernel module]]. This benefit can be crucial especially in cases where the server machine can't be customized or accessed (like in [[Cloud computing#Infrastructure as a service (IaaS)|cloud computing]] environment), even if the network performances could be reduced as compared the hardware supported ones.<ref name="RPS linux news (LWM)">{{Cite web|last1=Corbet |first1=Jonathan |title=RPS linux news (LWM)|url=https://lwn.net/Articles/362339/|access-date=2025-07-08|website=lwn.net|date=17 November 2009 |publisher=Linux Weekly News|language=en-US}}</ref><ref name="RPS by redhat">{{Cite web|title=RPS by redhat|url=https://docs.redhat.com/en/documentation/red_hat_enterprise_linux/6/html/performance_tuning_guide/network-rps|access-date=2025-07-08|website=docs.redhat.com|publisher=Red Hat Documentation|language=en-US}}</ref><ref name="RFS by nvidea" />

=== RPS ===

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* {{Cite book |last1=Helbig |first1=Maike |last2=Kim |first2=Younghoon |chapter=IAPS: Decreasing Software-Based Packet Steering Overhead Through Interrupt Reduction |date=2025-01-01 |pages=127–130 |title=2025 International Conference on Information Networking (ICOIN) |doi=10.1109/ICOIN63865.2025.10993154 |isbn=979-8-3315-0694-0 }}

* {{Cite book |last1=Kumar |first1=Ashwin |last2=Katkam |first2=Rajneesh |last3=Chaudhary |first3=Pranav |last4=Naik |first4=Priyanka |last5=Vutukuru |first5=Mythili |chapter=AppSteer: Framework for Improving Multicore Scalability of Network Functions via Application-aware Packet Steering |date=2024-05-01 |pages=18–27 |title=2024 IEEE 24th International Symposium on Cluster, Cloud and Internet Computing (CCGrid) |doi=10.1109/CCGrid59990.2024.00012 |isbn=979-8-3503-9566-2 }}

* {{Cite journal |last1=Tyunyayev |first1=Nikita |last2=Delzotti |first2=Clément |last3=Eran |first3=Haggai |last4=Barbette |first4=Tom |date=2025-06-09 |title=ASNI: Redefining the Interface Between SmartNICs and Applications |url=https://dl.acm.org/doi/10.1145/3730966 |journal=Proc. Proceedings of the ACM Netw.on Networking|volume=3 |issue=CoNEXT2 |pages=1–22 |doi=10.1145/3730966|url-access=subscription }}

== External links ==