3b6e2dee20
scx_mitosis is a dynamic affinity scheduler which assigns cgroups to Cells and Cells to discrete sets of CPUs. The number of cells is dynamic as is the CPU assignment. BPF mostly just does vtime scheduling for each cell, tracks load, and responds to reconfiguration from userspace. Userspace makes decisions about how to assign cgroups to cells and cells to cpus. This is not yet a complete scheduler, much of the userspace logic is a placeholder as I experiment with better logic. I also want to add richer scheduling semantics to userspace, e.g. so that cells can do more "soft-affinity" rather than the strict partitioning implemented currently. Signed-off-by: Dan Schatzberg <schatzberg.dan@gmail.com> |
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| rust | ||
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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