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UID:931@lincs.fr
DTSTART;TZID=Europe/Paris:20251203T151500
DTEND;TZID=Europe/Paris:20251203T161500
DTSTAMP:20251209T153139Z
URL:https://www.lincs.fr/events/high-speed-networking-from-kernel-bottlene
 cks-to-line-rate-packet-processing/
SUMMARY:High Speed Networking: From Kernel Bottlenecks to Line-Rate Packet
 Processing
DESCRIPTION:Modern networked systems are moving from hardware into
 flexible\, programmable platforms. Among the key enablers of this shift we
 list the Intel DPDK and the eBPF ecosystem in conjunction with the eXpress
 Data Path (XDP)\, both allowing packet processing at very high rates.\nAs
 the classic per-packet processing model used by the usual networking stack
 can become a bottleneck (especially with pressure on CPU pipelines and the
 number of instructions per packet required)\, new designs require treating
 packets in batches\, data prefetching\, vectorized operations and better
 instruction-level parallelism. In this talk\, we will show how kernel
 bottlenecks impact line-rate packet processing and how modern approaches
 attempt to overcome them\, offering an accessible introduction to
 profiling\, optimization\, and programmable data paths in virtualized
 networking environments.\nThese ideas illustrate how rethinking execution
 models can significantly improve packet-processing efficiency. This talk
 provides an accessible introduction to these concepts\, focusing on how XDP
 fits into virtualized networking\, why profiling matters\, and how
 batching-aware techniques can unlock new optimization opportunities for
 modern programmable data paths.\n\nBio: Vladimiro is a second-year PhD
 student at Sapienza University of Rome. At the beginning of his PhD\, he
 focused on studying network functions and their performance. Together with
 his advisor\, Salvatore Pontarelli\, and his colleagues\, he developed a
 profiler for eBPF applications that introduces only minimal overhead on the
 program being analyzed. He is now working on improving the performance of
 eBPF-based networking applications by bringing a batching model to eBPF.
CATEGORIES:Seminars,Youtube
LOCATION:Amphi 7\, 19 Place Marguerite Perey\, Palaiseau\, France
X-APPLE-STRUCTURED-LOCATION;VALUE=URI;X-ADDRESS=19 Place Marguerite Perey\,
 Palaiseau\, France;X-APPLE-RADIUS=100;X-TITLE=Amphi 7:geo:0,0
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TZID:Europe/Paris
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DTSTART:20251026T020000
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