Bug 10405 - Ondemand (default) power governor has problems ...
Summary: Ondemand (default) power governor has problems ...
Status: RESOLVED OLD
Alias: None
Product: Mageia
Classification: Unclassified
Component: RPM Packages (show other bugs)
Version: 3
Hardware: All Linux
Priority: Normal normal
Target Milestone: ---
Assignee: Mageia Bug Squad
QA Contact:
URL:
Whiteboard:
Keywords:
Depends on:
Blocks:
 
Reported: 2013-06-03 00:40 CEST by George Mitchell
Modified: 2015-03-31 16:05 CEST (History)
5 users (show)

See Also:
Source RPM: kernel-server-3.8.13-1.mga3-1-1.mga3.src.rpm
CVE:
Status comment:


Attachments

Description George Mitchell 2013-06-03 00:40:02 CEST
Description of problem:

This bug applies to all of the recent kernels, both desktop and server and to both the 32 and 64 bit architecture.

Ondemand power scaling provides poor performance and poor power savings.  I and several other users have noticed this:

https://forums.mageia.org/en/viewtopic.php?p=34497#p34497
https://forums.mageia.org/en/viewtopic.php?f=4&t=5118

It has also been discussed on Phoronix.  The profile of this governor either needs to be fixed or the distro default needs to be changed.  I found the conservative profile to be a huge improvement over the ondemand profile.  But if ondemand has intrinsic problems it should not be the default in any case.

http://www.phoronix.com/scan.php?page=news_item&px=MTM3NDQ

Version-Release number of selected component (if applicable):


How reproducible:


Steps to Reproduce:
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Reproducible: 

Steps to Reproduce:
Sander Lepik 2013-06-03 08:16:56 CEST

CC: (none) => sander.lepik, tmb

Denis Prost 2013-06-12 22:17:10 CEST

CC: (none) => denis.prost

Morgan Leijström 2013-06-26 21:30:21 CEST

CC: (none) => fri

Comment 1 Thierry Vignaud 2013-07-25 23:55:31 CEST
It may also be that Phoronix installed 32bit version which ended using kernel-server instead of kernel-desktop due to the large amount of RAM of their system.

CC: (none) => thierry.vignaud

Comment 2 Marja Van Waes 2015-03-31 16:05:56 CEST
Mageia 3 changed to end-of-life (EOL) status 4 months ago.
http://blog.mageia.org/en/2014/11/26/lets-say-goodbye-to-mageia-3/ 

Mageia 3 is no longer maintained, which means that it will not receive any further security or bug fix updates. As a result we are closing this bug.

If you can reproduce this bug against a currently maintained version of Mageia
please feel free to click on "Version" change it against that version of Mageia
and reopen this bug.

Thank you for reporting this bug and we are sorry it could not be fixed.

--
The Mageia Bugsquad

Status: NEW => RESOLVED
Resolution: (none) => OLD


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