All of lore.kernel.org
 help / color / mirror / Atom feed
From: "Jörg Otte" <jrg.otte@gmail.com>
To: "Rafael J. Wysocki" <rjw@rjwysocki.net>
Cc: Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
	Linux PM list <linux-pm@vger.kernel.org>
Subject: Re: [intel-pstate driver regression] processor frequency very high even if in idle
Date: Wed, 30 Mar 2016 12:17:32 +0200	[thread overview]
Message-ID: <CADDKRnCr0riAu4pjYRkuguoCoAjWxFoc+pU1NBymPr+3JnVanQ@mail.gmail.com> (raw)
In-Reply-To: <4187911.uaFVupaTVL@vostro.rjw.lan>

2016-03-29 23:34 GMT+02:00 Rafael J. Wysocki <rjw@rjwysocki.net>:
> On Tuesday, March 29, 2016 07:32:27 PM Jörg Otte wrote:
>> 2016-03-29 19:24 GMT+02:00 Jörg Otte <jrg.otte@gmail.com>:
>> > in v4.5 and earlier intel-pstate downscaled idle processors (load
>> > 0.1-0.2%) to minumum frequency, in my case 800MHz.
>> >
>> > Now in v4.6-rc1 the characteristic has dramatically changed. If in
>> > idle the processor frequency is more or less a few MHz around 2500Mhz.
>> > This is the maximum non turbo frequency.
>> >
>> > No difference between powersafe or performance governor.
>> >
>> > I currently use acpi_cpufreq which works as usual.
>> >
>> > Processor:
>> > Intel(R) Core(TM) i5-4200M CPU @ 2.50GHz (family: 0x6, model: 0x3c,
>> > stepping: 0x3)
>> >
>> > Last known good kernel is: 4.5.0-01127-g9256d5a
>> > First known bad kernel is: 4.5.0-02535-g09fd671
>> >
>> > There is
>> > commit 277edba Merge tag 'pm+acpi-4.6-rc1-1' of
>> > git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
>> > in between, which brought a few changes in intel_pstate.
>
> Can you please check commit a4675fbc4a7a (cpufreq: intel_pstate: Replace timers
> with utilization update callbacks)?
>
Yes , this solved the problem for me.
I had to resolve some conflicts myself when reverting that
commit. Hard work :).

Here is a 10-seconds trace of the used frequencies when
in "desktop-idle":

driver          cpu0 cpu1 cpu2 cpu3
-------------------------------------
intel_pstate (  800  928  941 1200) MHz   load:( 0.2)%
intel_pstate (  800  928 1181 1800) MHz   load:( 0.0)%
intel_pstate ( 1675 1576 1347  800) MHz   load:( 0.0)%
intel_pstate ( 1198 1576  842  800) MHz   load:( 0.5)%
intel_pstate (  800 1181 1113 1600) MHz   load:( 0.0)%
intel_pstate (  808 1181  805  800) MHz   load:( 0.5)%
intel_pstate (  844 1191  900 1082) MHz   load:( 0.3)%
intel_pstate (  816 1191  800  800) MHz   load:( 0.0)%
intel_pstate (  800  905  892 1082) MHz   load:( 0.2)%
intel_pstate (  945  905 1340  800) MHz   load:( 0.3)%


Thanks, Jörg

  reply	other threads:[~2016-03-30 10:17 UTC|newest]

Thread overview: 78+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2016-03-29 17:24 [intel-pstate driver regression] processor frequency very high even if in idle Jörg Otte
2016-03-29 17:32 ` Jörg Otte
2016-03-29 21:34   ` Rafael J. Wysocki
2016-03-30 10:17     ` Jörg Otte [this message]
2016-03-30 11:05       ` Rafael J. Wysocki
2016-03-30 15:29         ` Jörg Otte
2016-03-30 18:39           ` Rafael J. Wysocki
2016-03-31  9:05             ` Jörg Otte
2016-03-31 11:42               ` Rafael J. Wysocki
2016-03-31 15:25                 ` Jörg Otte
2016-03-31 15:43                   ` Rafael J. Wysocki
2016-03-31 16:10                     ` Srinivas Pandruvada
2016-03-31 17:27                     ` Jörg Otte
2016-03-31 17:55                       ` Srinivas Pandruvada
2016-04-01  0:08                         ` Rafael J. Wysocki
2016-04-01  9:42                         ` Jörg Otte
2016-04-01 15:05                           ` Srinivas Pandruvada
2016-04-01 20:24                             ` Rafael J. Wysocki
2016-04-01  9:20                     ` Jörg Otte
2016-04-01 12:40                       ` Rafael J. Wysocki
2016-04-01 14:06                         ` Jörg Otte
2016-04-01 17:44                           ` Srinivas Pandruvada
2016-04-01 18:31                             ` Doug Smythies
2016-04-01 18:41                               ` Srinivas Pandruvada
2016-04-01 19:54                               ` Rafael J. Wysocki
2016-04-01 23:36                                 ` Doug Smythies
2016-04-02  0:28                                   ` Rafael J. Wysocki
2016-04-01 20:28                           ` Rafael J. Wysocki
2016-04-02 22:50                             ` Rafael J. Wysocki
2016-04-01 15:20                         ` Doug Smythies
2016-04-01 16:46                           ` Jörg Otte
2016-04-01 17:34                             ` Jörg Otte
2016-03-30 15:33         ` Pandruvada, Srinivas
2016-03-30 15:51           ` Jörg Otte
2016-03-30 18:50             ` Doug Smythies
2016-03-30 18:50               ` Doug Smythies
2016-03-30 18:58               ` Srinivas Pandruvada
2016-03-30 20:12                 ` Rafael J. Wysocki
2016-03-30 20:26                   ` Srinivas Pandruvada
2016-03-31  9:23                     ` Jörg Otte
2016-03-31 14:39                       ` Doug Smythies
2016-03-31 14:39                         ` Doug Smythies
2016-03-31 15:06                         ` Srinivas Pandruvada
2016-03-31 15:32                           ` Jörg Otte
2016-03-31 15:10                         ` Doug Smythies
2016-03-31 15:10                           ` Doug Smythies
2016-04-01  7:20                       ` Doug Smythies
2016-04-01  7:20                         ` Doug Smythies
2016-03-30 21:41 Sedat Dilek
2016-03-30 21:58 ` Rafael J. Wysocki
2016-03-30 22:23   ` Sedat Dilek
2016-03-30 22:29     ` Rafael J. Wysocki
2016-03-30 22:18 ` Srinivas Pandruvada
2016-03-30 22:25   ` Rafael J. Wysocki
2016-03-30 22:46     ` Srinivas Pandruvada
2016-03-30 23:17       ` Pandruvada, Srinivas
2016-03-30 23:25         ` Sedat Dilek
2016-03-30 23:28           ` Rafael J. Wysocki
2016-03-30 23:32             ` Sedat Dilek
2016-03-30 23:41               ` Rafael J. Wysocki
2016-03-31  6:38                 ` Sedat Dilek
2016-03-31  7:45                   ` Sedat Dilek
     [not found]                 ` <CAA=4085Mmv7gRpJid8UGQ4ti6c1HhaENnogd8aPrg6E-w68QWg@mail.gmail.com>
2016-03-31  7:28                   ` Navin P.S
2016-03-30 22:50   ` Doug Smythies
2016-03-30 23:12     ` Srinivas Pandruvada
2016-03-31  8:10     ` Sedat Dilek
2016-03-31 14:30       ` Doug Smythies
2016-03-31 14:30         ` Doug Smythies
2016-04-02  6:12         ` Sedat Dilek
     [not found]           ` <CA+icZUVHyq7dOh457rYv+2nmNxPevY0ZcqxhQVhYG4Z1D-NaDA@mail.gmail.com>
2016-04-02 15:28             ` Srinivas Pandruvada
2016-04-02 17:19               ` Jörg Otte
2016-04-02 18:20                 ` Sedat Dilek
2016-04-03 18:59                   ` Doug Smythies
2016-04-03 18:59                     ` Doug Smythies
2016-04-04  5:13                     ` Sedat Dilek
2016-04-04  6:14                       ` Doug Smythies
2016-04-04  6:14                         ` Doug Smythies
2016-04-04 14:12                         ` Sedat Dilek

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=CADDKRnCr0riAu4pjYRkuguoCoAjWxFoc+pU1NBymPr+3JnVanQ@mail.gmail.com \
    --to=jrg.otte@gmail.com \
    --cc=linux-kernel@vger.kernel.org \
    --cc=linux-pm@vger.kernel.org \
    --cc=rjw@rjwysocki.net \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body. 
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.