linux-kernel - Re: [PATCH] x86: intel_epb: Set Alder Lake N and Raptor Lake P normal EPB

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Message-ID: <b79748ff2f07f95eb637ec7b6de74446c28f72b3.camel@linux.intel.com>
Date:   Thu, 27 Oct 2022 15:38:07 -0700
From:   srinivas pandruvada <srinivas.pandruvada@...ux.intel.com>
To:     Dave Hansen <dave.hansen@...el.com>, tglx@...utronix.de,
        mingo@...hat.com, bp@...en8.de, dave.hansen@...ux.intel.com,
        hpa@...or.com, rafael@...nel.org, len.brown@...el.com
Cc:     peterz@...radead.org, x86@...nel.org, linux-kernel@...r.kernel.org,
        linux-pm@...r.kernel.org
Subject: Re: [PATCH] x86: intel_epb: Set Alder Lake N and Raptor Lake P
 normal EPB

On Thu, 2022-10-27 at 15:30 -0700, Dave Hansen wrote:
> So, the tl;dr on this is:
> 
>         The EPB setting is fundamentally a classic power vs.
> performance
>         knob.  This change helps power a bunch (200+mw) while having
> a
>         negligible performance impact (<1% if that), so it's a great
>         trade-off.
> 
> Right?
Yes.
We already using EPB 7 on other AlderLake Mobiles.

Thanks,
Srinivas