622b61dd2f
The scx_rusty scheduler does not support hotplug, and expects a static host topology throughout its runtime. Though the kernel does have support for detecting hotplug events, we currently don't detect this in the kernel, nor surface it to user space when it happens. Now that we have scx_bpf_exit(), we can gracefully exit the kernel in the event of a hotplug, and communicate to user space that it should restart the scheduler. This patch adds that support to scx_rusty. Note that this assumes that we're running on a recent enough kernel that has scx_bpf_exit(). If it doesn't, then we instead just error out of the kernel scheduler and exit the application. Signed-off-by: David Vernet <void@manifault.com> |
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| c | ||
| include | ||
| rust | ||
| meson.build | ||
| README.md | ||
| sync-to-kernel.sh | ||
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