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Andrea Righi cb20a6f136 scx_rlfifo: dispatch all tasks on the first CPU available 
With commit 786ec0c0 ("scx_rlfifo: schedule all tasks in user-space")
all the scheduling decisions are now happening in user-space. This also
bypasses the built-in idle selection logic, delegating the CPU selection
for each task to the user-space scheduler.

The easiest way to distribute tasks across the available CPUs is to
simply allow to dispatch them on the first CPU available.

In this way the scheduler becomes usable in practical scenarios and at
the same time it also maintains its simplicity.

This allows to spread all tasks across all the available CPUs

Signed-off-by: Andrea Righi <andrea.righi@canonical.com>
2024-06-15 16:13:53 +02:00
..
c uei: Pass skel to RESIZE_ARRAY() 2024-06-11 10:15:26 -05:00
include common: Add css iter forward declares 2024-06-12 15:02:48 -07:00
rust scx_rlfifo: dispatch all tasks on the first CPU available 2024-06-15 16:13:53 +02:00
meson.build Restructure scheds folder names 2023-12-17 13:14:31 -08:00
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

README.md

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