scx/scheds
Andrea Righi 78101e4688 scx_bpfland: drop lowlatency mode and the priority DSQ
Schedule all tasks using a single global DSQ. This gives a better
control to prevent potential starvation conditions.

With this change, scx_bpfland adopts a logic similar to scx_rusty and
scx_lavd, prioritizing tasks based on the frequency of their wait and
wake-up events, rather than relying exclusively on the average amount of
voluntary context switches.

Tasks are still classified as interactive / non-interactive based on the
amount of voluntary context switches, but this is only affecting the
cpufreq logic.

Signed-off-by: Andrea Righi <arighi@nvidia.com>
2024-11-06 15:06:39 +01:00
..
c scheds/c: Re-enable scx_flatcg and scx_pair 2024-09-25 12:38:45 -10:00
include [bug-fix] 2024-11-04 10:54:29 -05:00
rust scx_bpfland: drop lowlatency mode and the priority DSQ 2024-11-06 15:06:39 +01:00
meson.build Use per-arch vmlinux.h v2 2024-10-19 10:50:59 -07:00
README.md Restructure scheds folder names 2023-12-17 13:14:31 -08:00
sync-to-kernel.sh sync-to-kernel.sh: Sync scx_central and scx_flatcg 2024-02-23 14:21:03 -10:00

SCHED_EXT SCHEDULERS

Introduction

This directory contains the repo's schedulers.

Some of these schedulers are simply examples of different types of schedulers that can be built using sched_ext. They can be loaded and used to schedule on your system, but their primary purpose is to illustrate how various features of sched_ext can be used.

Other schedulers are actually performant, production-ready schedulers. That is, for the correct workload and with the correct tuning, they may be deployed in a production environment with acceptable or possibly even improved performance. Some of the examples could be improved to become production schedulers.

Please see the following README files for details on each of the various types of schedulers:

  • rust describes all of the schedulers with rust user space components. All of these schedulers are production ready.
  • c describes all of the schedulers with C user space components. All of these schedulers are production ready.

Note on syncing

Note that there is a sync-to-kernel.sh script in this directory. This is used to sync any changes to the specific schedulers with the Linux kernel tree. If you've made any changes to a scheduler in please use the script to synchronize with the sched_ext Linux kernel tree:

$ ./sync-to-kernel.sh /path/to/kernel/tree