[$] Inline socket-local storage for BPF

Date:
Mon, 28 Apr 2025 14:57:09 +0000

Description:
Martin Lau gave a talk in the BPF track of the 2025 Linux Storage, Filesystem, Memory-Management, and BPF Summit about a performance problem
plaguing the networking subsystem, and some potential ways to fix it. He
works on
BPF programs that need to store socket-local data; amid other improvements to the networking and BPF subsystems, retrieving that data has become a noticeable
bottleneck for his use case. His proposed fix prompted a good deal of discussion
about how the data should be laid out.

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Link to news story:
https://lwn.net/Articles/1018320/


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