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In 2023, Peter Zijlstra proposed replacing the Completely Fair Scheduler (CFS) in the Linux kernel with an EEVDF process scheduler. [4] [5] The aim was to remove the need for CFS "latency nice" patches. [6] The EEVDF scheduler replaced CFS in version 6.6 of the Linux kernel. [7]
In 2016, the Linux scheduler was patched for better multicore performance, based on the suggestions outlined in the paper, "The Linux Scheduler: A Decade of Wasted Cores". [9] In 2023, a new scheduler based on earliest eligible virtual deadline first scheduling (EEVDF) was being readied to replace CFS. [10]
Location of the process scheduler in a simplified structure of the Linux kernel. SCHED_DEADLINE is a CPU scheduler available in the Linux kernel since version 3.14, [1] [2] based on the earliest deadline first (EDF) and constant bandwidth server (CBS) [3] algorithms, supporting resource reservations: each task scheduled under such policy is associated with a budget Q (aka runtime), and a ...
The O(n) scheduler [1] is the scheduler used in the Linux kernel between versions 2.4 and 2.6. Since version 2.6.0, it has been replaced by the O(1) scheduler and in 2.6.23 by the Completely Fair Scheduler (CFS), which itself was replaced by the current Earliest eligible virtual deadline first (EEVDF) in 6.6. [2]
The location of process schedulers in a simplified structure of the Linux kernel. The Brain Fuck Scheduler (BFS) is a process scheduler designed for the Linux kernel in August 2009 based on earliest eligible virtual deadline first scheduling (EEVDF), [2] as an alternative to the Completely Fair Scheduler (CFS) and the O(1) scheduler. [3]
The Linux kernel is a free and open source, ... (EEVDF) scheduler, [174] is the default scheduler of Linux since 2023 and it uses a red-black tree which can search, ...
PREEMPT_RT was a set of patches for the Linux kernel which implement both hard and soft real-time computing capabilities. [1] On September 20, 2024, PREEMPT_RT was fully merged and enabled in mainline Linux on the supported architectures x86, x86_64, RISC-V and ARM64. [2] This will make kernel v6.12 the first release to include baked-in real ...
The new EEVDF process scheduler was merged. ... Versions 2.6.16 and 2.6.27 of the Linux kernel were unofficially given long-term support (LTS), [301] ...