APPLIED: [SRU][jammy][PATCH 0/1] performance: Scheduler: Improve cache bouncing on tg->load_avg

[Roxana Nicolescu]

On 15/02/2024 19:07, Philip Cox wrote:
> BugLink: BugLink: https://bugs.launchpad.net/bugs/2053251
>
> SRU Justification:
>
> [Impact]
> On high core count systems, the updating of the load average can happen so
> often that it impacts performance.
>
> [Fix]
> Reduce the updating of the load average to at most once per millisecond.
>
>
> [Test Plan]
> I have tested this patch, as has Intel.
>
> [Where problems could occur]
> The risk for regression is low as it is a fairly targetted change, and is just reducing the number
> of times that the load average is updated.
>
> --
>
>
> Aaron Lu (1):
>    sched/fair: Ratelimit update to tg->load_avg
>
>   kernel/sched/fair.c  | 13 ++++++++++++-
>   kernel/sched/sched.h |  1 +
>   2 files changed, 13 insertions(+), 1 deletion(-)
>
Applied to jammy master-next branch. Thanks!