c953ee47a6
In scx_nest, we currently count the number of times that a core is scheduled for compaction before we eventually just eagerly compact the core. The idea is that the core could thrash between being scheduled and then "de-scheduled" for compaction if there are a couple of tasks that are bouncing between cores in the primary nest often enough to kick them out of being compacted. We're currently resetting schedulings when a core is eagerly compacted, but to be precise we should probably also reset the count when a core consumes a task from the fallback DSQ, at this indicates that the system is overcommitted and that we likely won't benefit from compacting the primary nest. Signed-off-by: David Vernet <void@manifault.com> |
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| .. | ||
| c-user | ||
| include | ||
| kernel-examples | ||
| rust-user | ||
| 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:
- kernel-examples describes all of the example schedulers that are also shipped with the Linux kernel tree.
- rust-user describes all of the schedulers with rust user space components. All of these schedulers are production ready.
- c-user 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 kernel-examples/ schedulers with the Linux kernel tree. If you've made any changes to a scheduler in kernel-examples/, please use the script to synchronize with the sched_ext Linux kernel tree:
$ ./sync-to-kernel.sh /path/to/kernel/tree