87aa86845d
Right now, the SCX_WAKE_SYNC logic in rusty is very primitive. We only check to see if the waker CPU's runqueue is empty, and then migrate the wakee there if so. We'll want to expand this to be more thorough, such as: - Checking to see if prev_cpu and waker_cpu share the same LLC when determining where to migrate - Check for whether SCX_WAKE_SYNC migration helps load imbalance between cores - ... Right now all of that code is just a big blob in the middle of rusty_select_cpu(). Let's pull it into its own function to improve readability, and also add some logic to stay on prev_cpu if it shares an LLC with the waker. 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