Messages in this thread | | | Subject | Re: [PATCH] intel_idle: add CPUIDLE_FLAG_IRQ_ENABLE to SPR C1 and C1E | From | Artem Bityutskiy <> | Date | Sun, 12 Nov 2023 13:52:12 +0200 |
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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.
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