scx_rust_scheduler is a fully functional FIFO scheduler for the Linux kernel
that operates in user-space and it is 100% implemented in Rust.
It is based on scx_rustland_core, a framework that is specifically designed
to simplify the creation of user-space schedulers, leveraging the Linux
kernel's sched_ext feature and BPF.
The scheduler is intended to serve as a basic template for developers who want to experiment with more advanced scheduling policies without having to directly engage with low-level kernel internals.
In order to run this scheduler you need a kernel that supports sched_ext
(CONFIG_SCHED_CLASS_EXT=y).
You also need the following binaries/packages in order to build the scheduler:
- cargo
- rustc
- bindgen
- bpftool
- libbpf
CachyOS ships a sched_ext kernel by default, so you only need to install the
following user-space packages:
$ sudo pacman -S bpf libbpf rust clang pkgconf
If you are using Ubuntu, you can run the following commands to setup an
environment to build and test scx_rust_scheduler:
- install a
sched_extUbuntu kernel and all the required user-space dependencies:
$ sudo add-apt-repository -y --enable-source ppa:arighi/sched-ext
$ sudo apt update -y
$ sudo apt dist-upgrade -y
$ sudo apt install -y rustc cargo libbpf-dev pkg-config clang
- reboot the system
- Build the scheduler:
$ cargo build
- Enable the scheduler:
$ sudo ./target/debug/scx_rust_scheduler
Rust scheduler is enabled (CTRL+c to exit)
- Disable the scheduler:
^C
Rust scheduler is disabled
EXIT: Scheduler unregistered from user space
This software is licensed under the GNU General Public License version 2. See the LICENSE file for details.