mirror of
https://github.com/sched-ext/scx.git
synced 2024-11-25 04:00:24 +00:00
791bdbec97
Introduce a basic support of CPU topology awareness. With this change, the scheduler will prioritize dispatching tasks to idle CPUs with fewer busy SMT siblings, then, it will proceed to CPUs with more busy SMT siblings, in ascending order. To implement this, introduce a new CoreMapping abstraction, that provides a mapping of the available core IDs in the system along with their corresponding lists of CPU IDs. This, coupled with the get_cpu_pid() method from the BpfScheduler abstraction, allows the user-space scheduler to enforce the policy outlined above and improve performance on SMT systems. Keep in mind that this improvement is relevent only when the amount of tasks running in the system is less than the amount of CPUs. As soon as the amount of running tasks increases, they will be distributed across all available CPUs and cores, thereby negating the advantages of SMT isolation. Signed-off-by: Andrea Righi <andrea.righi@canonical.com> |
||
|---|---|---|
| .. | ||
| scx_layered | ||
| scx_rustland | ||
| scx_rusty | ||
| meson.build | ||
| README.md | ||
RUST SCHEDULERS
Introduction
This directory contains schedulers with user space rust components.
The README in each scheduler directory provides some background and describes the types of workloads or scenarios they're designed to accommodate. For more details on any of these schedulers, please see the header comment in their main.rs or *.bpf.c files.