From: "Doug Smythies" <dsmythies@telus.net>
To: 'Deirdre Kylie' <kylie.deirdre@gmail.com>
Cc: cpufreq@vger.kernel.org
Subject: RE: cpufreq doesn't work quite on Dell GX520 with Pentium D at 2.80gHz
Date: Thu, 17 Sep 2015 20:24:46 -0700 [thread overview]
Message-ID: <001201d0f1c1$92476900$b6d63b00$@net> (raw)
In-Reply-To: <CACs6S=huh52Q6N4t=1bOzfz+ZRMk5p1jy-STHDDr8K32KRVGcQ@mail.gmail.com>
On 2015.09.17 12:24 Deirdre Kylie wrote:
> Here is the results after "apt-get"-ing it and running cpufreq-info
> ~~~~~~~~~~~~~~~~~~~~~~~~~~~
> ...
> Preparing to unpack .../cpufrequtils_008-1_amd64.deb ...
> Unpacking cpufrequtils (008-1) ...
> Processing triggers for man-db (2.6.7.1-1ubuntu1) ...
> Processing triggers for ureadahead (0.100.0-16) ...
> ureadahead will be reprofiled on next reboot
> Setting up libcpufreq0 (008-1) ...
> Setting up cpufrequtils (008-1) ...
> * Loading cpufreq kernel modules... [fail]
> * CPUFreq Utilities: Setting ondemand CPUFreq governor...
> * disabled, governor not available...
> [ OK ]
> Processing triggers for libc-bin (2.19-0ubuntu6.6) ...
> Processing triggers for ureadahead (0.100.0-16) ...
> root@deeDell:/home/dee# cpufreq-info
> cpufrequtils 008: cpufreq-info (C) Dominik Brodowski 2004-2009
> Report errors and bugs to cpufreq@vger.kernel.org, please.
> analyzing CPU 0:
> no or unknown cpufreq driver is active on this CPU
> maximum transition latency: 4294.55 ms.
> analyzing CPU 1:
> no or unknown cpufreq driver is active on this CPU
> maximum transition latency: 4294.55 ms.
It sounds as though you do not have any frequency scaling driver,
which might be a due to a BIOS setting (I don't know),
and so no you shouldn't try to use cpufrequtils.
Here is a way to check (there may be better ways):
First there is a scaling driver:
doug@s15:~/temp$ cat /sys/devices/system/cpu/cpu*/cpufreq/scaling_driver
intel_pstate
intel_pstate
intel_pstate
intel_pstate
intel_pstate
intel_pstate
intel_pstate
intel_pstate
doug@s15:~/temp$ cat /sys/devices/system/cpu/cpu*/cpufreq/scaling_governor
powersave
powersave
powersave
powersave
powersave
powersave
powersave
powersave
Second there is not a scaling driver:
doug@doug-64:~$ cat /sys/devices/system/cpu/cpu*/cpufreq/scaling_driver
cat: /sys/devices/system/cpu/cpu*/cpufreq/scaling_driver: No such file or directory
In the latter case the CPU frequency is fixed and is always the same:
doug@doug-64:~$ grep MHz /proc/cpuinfo
cpu MHz : 3391.586
cpu MHz : 3391.586
prev parent reply other threads:[~2015-09-18 3:24 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-09-17 19:24 cpufreq doesn't work quite on Dell GX520 with Pentium D at 2.80gHz Deirdre Kylie
2015-09-18 3:24 ` Doug Smythies [this message]
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='001201d0f1c1$92476900$b6d63b00$@net' \
--to=dsmythies@telus.net \
--cc=cpufreq@vger.kernel.org \
--cc=kylie.deirdre@gmail.com \
/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 a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for read-only IMAP folder(s) and NNTP newsgroup(s).