scx/rust
Andrea Righi 6cc2595922 scx_rustland_core: allow user-space scheduler to preempt other tasks
The same change was previously applied with commit 8820af8d
("scx_rustland: enable user-space scheduler to preempt other tasks").

However, it was reverted in commit 732ba490 ("scx_rustland: avoid using
SCX_ENQ_PREEMPT") with the introduction of the global dynamic time
slice (inversely proportional to the number of running tasks), because
it already provided sufficient context switch opportunities, negating
any advantage of the preemption.

With the introduction of the virtual time slice in commit 6f4cd853
("scx_rustland: introduce virtual time slice"), re-introducing the
ability for the user-space scheduler to preempt other tasks now appears
beneficial again.

As confirmed by experimental results, this change helps prevent
potential audio cracking issues and enhances overall system
responsiveness, resulting in a 4-5% increase in fps performing the
usual benchmark of gaming while recompiling the kernel.

Tested-by: SoulHarsh007 <harsh.peshwani@outlook.com>
Signed-off-by: Andrea Righi <andrea.righi@canonical.com>
2024-06-14 20:09:19 +02:00
..
scx_rustland_core scx_rustland_core: allow user-space scheduler to preempt other tasks 2024-06-14 20:09:19 +02:00
scx_utils scx_utils: Add CPU freq transition latency 2024-06-11 07:35:34 -07:00
meson.build rust: introduce scx_rustland_core crate 2024-02-28 17:49:44 +01:00