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Linux Sees Massive Performance Increase from a Single Line of Code
You read that right; a single line of code from Intel has shown the Linux kernel could receive a performance jump of up to 4,000 percent by way of will-it-scale.per_process_ops.
An Intel kernel testing bot discovered this, and the change was added to commit efa7df3e3bb5 ("mm: align larger anonymous mappings on THP boundaries"). That commit was related to efficient memory management and mapping (mm and mmap) techniques that use Transparent Hugepages (THPs) and Page Middle Directory (PMD).
Before anyone gets too excited, the discovered performance increase was isolated to a synthetic test case, so real-world workloads will probably never see such incredible gains. However, it does make a solid case for how well Linux is capable of performing.
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