copy_from_user | BestHub

IT Services Circle

Nov 4, 2024 · Fundamentals

Linus Torvalds Merges Patch Optimizing copy_from_user() by Removing barrier_nospec() for a 2.6% Performance Boost

Linus Torvalds merged a kernel patch that modifies the 64‑bit copy_from_user() implementation to avoid the slow barrier_nospec() call, achieving a 2.6% performance improvement in the "will it scale" benchmark and will be included in the upcoming Linux 6.12 stable release.

LinuxPatchcopy_from_user

0 likes · 4 min read

Linus Torvalds Merges Patch Optimizing copy_from_user() by Removing barrier_nospec() for a 2.6% Performance Boost

Java Tech Enthusiast

Nov 4, 2024 · Fundamentals

Linux Kernel Patch Improves Performance by 2.6% in Intel Benchmark

Linus Torvalds merged a small patch into the Linux kernel that streamlines the 64‑bit copy_from_user() routine by skipping the costly barrier_nospec() and applying masked user‑address handling, delivering a 2.6% speedup on Intel’s “will it scale” per‑thread‑ops benchmark and slated for inclusion in the upcoming Linux 6.12 stable release.

Linux KernelPatchbenchmark

0 likes · 4 min read

Linux Kernel Patch Improves Performance by 2.6% in Intel Benchmark