Re: [PATCH] intel_idle: add CPUIDLE_FLAG_IRQ_ENABLE to SPR C1 and C1E

[Artem Bityutskiy]

On Fri, 2023-11-10 at 20:00 +0000, Jon Kohler wrote:
> CPUIDLE_FLAG_IRQ_ENABLE

Hi, yes, I did run several experiments, and found that this change would make
some micro benchmarks give worse score. I did a lot of repetitions assuming I
was mixing noise with signal, but every time confirmed that enabling interrupts
in C1 made the score worse (like 1%).

I do not have explanation for this phenomena, but decided to not pursue this
idea.

Artem.