linux-kernel - Re: Regression in 4.8 - CPU speed set very low

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Message-ID: <67ccf531-8b8a-701f-49a3-faed02e7dabe@lwfinger.net>
Date:   Thu, 29 Sep 2016 11:24:29 -0500
From:   Larry Finger <Larry.Finger@...inger.net>
To:     Srinivas Pandruvada <srinivas.pandruvada@...ux.intel.com>,
        "Rafael J. Wysocki" <rjw@...ysocki.net>,
        Zhang Rui <rui.zhang@...el.com>
Cc:     "Rafael J. Wysocki" <rafael@...nel.org>,
        Doug Smythies <dsmythies@...us.net>,
        LKML <linux-kernel@...r.kernel.org>,
        Linux PM list <linux-pm@...r.kernel.org>
Subject: Re: Regression in 4.8 - CPU speed set very low

On 09/29/2016 10:56 AM, Srinivas Pandruvada wrote:
> On Thu, 2016-09-29 at 14:19 +0200, Rafael J. Wysocki wrote:
>
> [...]
>
>>> My laptop was inadvertently put to sleep while I was gone. I forgot
>>> to leave a
>>> note for my wife and she quieted the noisy cpu fan. :)
>> It looks like in 4.8-rc we made a change that caused the "high" trip
>> point to
>> be acted on.
> This high trip point we don't expose in thermal subsystem (the thermal
>  zone dump didn't show this anywhere as a trip). This is exposed by
> core-dts driver only. This is the point BIOS is supposed to act, I
> guess that's why you are seeing 50% clock modulation.
>
>
> Are you running thermald
>
> What is?
> # ps -e | grep thermald

The output is blank. I am not running thermald.

Larry