linux-kernel - Re: [intel-pstate driver regression] processor frequency very high even if in idle

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Date:	Thu, 31 Mar 2016 10:10:44 +0200
From:	Sedat Dilek <sedat.dilek@...il.com>
To:	Doug Smythies <dsmythies@...us.net>
Cc:	Srinivas Pandruvada <srinivas.pandruvada@...ux.intel.com>,
	"Rafael J. Wysocki" <rafael.j.wysocki@...el.com>,
	Jörg Otte <jrg.otte@...il.com>,
	Linux PM List <linux-pm@...ts.linux-foundation.org>,
	LKML <linux-kernel@...r.kernel.org>
Subject: Re: [intel-pstate driver regression] processor frequency very high
 even if in idle

On Thu, Mar 31, 2016 at 12:50 AM, Doug Smythies <dsmythies@...us.net> wrote:
> On 2106.03.30 15:19 Srinivas Pandruvada wrote:
>>>
>>> Please see attached files.
>>>
>> Thanks. Your logs make sense. You have config set to performance mode
>> by default (Which I believe default in all kernel Ubuntu).
>
> Yes, but via a startup script, by default Ubuntu sets the governor
> to powersave 1 minute after boot (or ondemand if acpi-cpufreq).
>

Can you give more and precise informations on this?
script-name etc.

>> So as
>> expected Intel P state was asking for max. So there is no issue here.
>
> Yes, your point is valid, as this does not appear to be a Ubuntu kernel
> configuration file, as the size is not correct.
>
> Should be:
> -rw-r--r--  1 doug doug 194436 Mar 26 18:59 ../temp-k-git/linux/.config-4.6.0-040600rc1-generic
> Is:
> -rw-r--r-- 1 doug doug 134944 Mar 30 15:21 config-4.6.0-rc1-11-iniza-small
>

Yes, this is the config of my customized Linux-kernel based on Ubuntu
"generic" flavour (details see attached file).

- Sedat -

View attachment "WHATS-IN-DILEKS-LINUX-KERNEL.txt" of type "text/plain" (5413 bytes)