* [Bug 55261] New: down_threshold is missing
@ 2013-03-15 6:14 bugzilla-daemon
2013-03-15 8:58 ` [Bug 55261] " bugzilla-daemon
` (4 more replies)
0 siblings, 5 replies; 6+ messages in thread
From: bugzilla-daemon @ 2013-03-15 6:14 UTC (permalink / raw
To: cpufreq
https://bugzilla.kernel.org/show_bug.cgi?id=55261
Summary: down_threshold is missing
Product: Power Management
Version: 2.5
Kernel Version: Ubuntu 3.8.0-12.21-generic 3.8.2
Platform: All
OS/Version: Linux
Tree: Mainline
Status: NEW
Severity: normal
Priority: P1
Component: cpufreq
AssignedTo: cpufreq@vger.kernel.org
ReportedBy: sworddragon2@aol.com
Regression: No
On my system the file /sys/devices/system/cpu/cpufreq/ondemand/down_threshold
doesn't exist while the file up_threshold does exist in the same directory. The
problem is without this file the value of down_threshold seems to be
automatically set to 10 so I'm not able to set up_threshold to a value lower
than 11.
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* [Bug 55261] down_threshold is missing
2013-03-15 6:14 [Bug 55261] New: down_threshold is missing bugzilla-daemon
@ 2013-03-15 8:58 ` bugzilla-daemon
2013-03-15 12:02 ` bugzilla-daemon
` (3 subsequent siblings)
4 siblings, 0 replies; 6+ messages in thread
From: bugzilla-daemon @ 2013-03-15 8:58 UTC (permalink / raw
To: cpufreq
https://bugzilla.kernel.org/show_bug.cgi?id=55261
Viresh Kumar <viresh.kumar@linaro.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |viresh.kumar@linaro.org
--- Comment #1 from Viresh Kumar <viresh.kumar@linaro.org> 2013-03-15 08:58:02 ---
This happened a long time back for ondemand governor (it is still supported by
conservative though).
commit c29f1403098135bdef75b190a5037db514701031
Author: Dave Jones <davej@redhat.com>
Date: Tue May 31 19:03:50 2005 -0700
[CPUFREQ] ondemand governor automatic downscaling
[PATCH] [4/5] ondemand governor automatic downscaling
Here is a change of policy for the ondemand governor. The modification
concerns the frequency downscaling. Instead of decreasing to a lower
frequency when the CPU usage is under 20%, this new policy automatically
scales to the optimal frequency. The optimal frequency being the lowest
frequency which provides enough power to not trigger the upscaling policy.
Signed-off-by: Eric Piel <eric.piel@tremplin-utc.net>
Signed-off-by: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com>
Signed-off-by: Dave Jones <davej@redhat.com>
---
drivers/cpufreq/cpufreq_ondemand.c | 117
+++++++++++++++++++++++------------------------------------------------------------------------------------
1 file changed, 25 insertions(+), 92 deletions(-)
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* [Bug 55261] down_threshold is missing
2013-03-15 6:14 [Bug 55261] New: down_threshold is missing bugzilla-daemon
2013-03-15 8:58 ` [Bug 55261] " bugzilla-daemon
@ 2013-03-15 12:02 ` bugzilla-daemon
2013-03-26 7:47 ` bugzilla-daemon
` (2 subsequent siblings)
4 siblings, 0 replies; 6+ messages in thread
From: bugzilla-daemon @ 2013-03-15 12:02 UTC (permalink / raw
To: cpufreq
https://bugzilla.kernel.org/show_bug.cgi?id=55261
--- Comment #2 from sworddragon2@aol.com 2013-03-15 12:02:09 ---
This makes it dificult to get an early upscaling of the cpu frequency. I'm
trying to achieve this at ~1% cpu usage. Would it be possible after this commit
to allow up_threshold to be lower (for example 1 on my system)?
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* [Bug 55261] down_threshold is missing
2013-03-15 6:14 [Bug 55261] New: down_threshold is missing bugzilla-daemon
2013-03-15 8:58 ` [Bug 55261] " bugzilla-daemon
2013-03-15 12:02 ` bugzilla-daemon
@ 2013-03-26 7:47 ` bugzilla-daemon
2013-03-26 7:47 ` bugzilla-daemon
2013-04-18 6:59 ` bugzilla-daemon
4 siblings, 0 replies; 6+ messages in thread
From: bugzilla-daemon @ 2013-03-26 7:47 UTC (permalink / raw
To: cpufreq
https://bugzilla.kernel.org/show_bug.cgi?id=55261
Aaron Lu <aaron.lu@intel.com> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |aaron.lu@intel.com
AssignedTo|cpufreq@vger.kernel.org |aaron.lu@intel.com
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* [Bug 55261] down_threshold is missing
2013-03-15 6:14 [Bug 55261] New: down_threshold is missing bugzilla-daemon
` (2 preceding siblings ...)
2013-03-26 7:47 ` bugzilla-daemon
@ 2013-03-26 7:47 ` bugzilla-daemon
2013-04-18 6:59 ` bugzilla-daemon
4 siblings, 0 replies; 6+ messages in thread
From: bugzilla-daemon @ 2013-03-26 7:47 UTC (permalink / raw
To: cpufreq
https://bugzilla.kernel.org/show_bug.cgi?id=55261
Aaron Lu <aaron.lu@intel.com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |ASSIGNED
AssignedTo|aaron.lu@intel.com |cpufreq@vger.kernel.org
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* [Bug 55261] down_threshold is missing
2013-03-15 6:14 [Bug 55261] New: down_threshold is missing bugzilla-daemon
` (3 preceding siblings ...)
2013-03-26 7:47 ` bugzilla-daemon
@ 2013-04-18 6:59 ` bugzilla-daemon
4 siblings, 0 replies; 6+ messages in thread
From: bugzilla-daemon @ 2013-04-18 6:59 UTC (permalink / raw
To: cpufreq
https://bugzilla.kernel.org/show_bug.cgi?id=55261
Lan Tianyu <tianyu.lan@intel.com> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |tianyu.lan@intel.com
AssignedTo|cpufreq@vger.kernel.org |tianyu.lan@intel.com
--- Comment #3 from Lan Tianyu <tianyu.lan@intel.com> 2013-04-18 06:59:14 ---
Hi, sworddragon2:
This is not a bug but "a change of policy for the ondemand governor".
So close this as invalid.
Hi Viresh:
Could you answer sworddragon2's question in the comment2?
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