sched_ext is a Linux kernel feature which enables implementing host-wide, safe kernel thread schedulers in BPF, and dynamically loading them at runtime. sched_ext enables safe and rapid iterations of scheduler implementations, thus radically widening the scope of scheduling strategies that can be experimented with and deployed, even in massive and complex production environments.

sched_ext was first sent to the upstream list as an RFC patch set back in November 2022. Since then, the project has evolved a great deal, both technically, as well as in the significant growth of the community of sched_ext users and contributors.

This MC is the space for the community to discuss the developments of sched_ext, its impact on the community, and to outline future strategies aimed at integrating this feature into the Linux kernel and mainstream Linux distributions.

Ideas of topics to be discussed include (but are not limited to):

• Challenges and plans to facilitate the upstream merge of sched_ext
• User-space scheduling (offload part / all of the scheduling from kernel to user-space)
• Scheduling for gaming and latency-sensitive workloads
• Scheduling & cpufreq integration
• Distro support

While we anticipate having a schedule with existing talk proposals at the MC, we invite you to submit proposals for any topic(s) you’d like to discuss. Time permitting, we are happy to readjust the schedule for additional topics that are of relevance to the sched_ext community.

Submissions are made via LPC submission system, selecting the track Sched-Ext: The BPF extensible scheduler class.

We will consider the submissions until July 12th.