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

[Philip Cox]

On Thu, 2024-02-15 at 13:07 -0500, 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(-)
> 

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