[$] Per-CPU memory for user space
Date:
Tue, 08 Apr 2025 13:37:07 +0000
Description:
The kernel makes extensive use of per-CPU data as a way to avoid contention between processors and improve scalability. Using the same technique in
user space is harder, though, since there is little control over which CPU
a process may be running on at any given time. That hasn't stopped Mathieu Desnoyers from trying, though; in the memory-management track of the 2025
Linux Storage, Filesystem, Memory-Management, and BPF Summit, he presented
a proposal for how user-space per-CPU memory could work.
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Link to news story:
https://lwn.net/Articles/1016408/
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