Hello,
This bug has been reported on the kernel bugtracker :
https://bugzilla.kernel.org/show_bug.cgi?id=30712
Fabien
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On Tue, Feb 22, 2011 at 12:49:42AM +0100, Fabien C. wrote:
No, I meant that those numbers were really a power saving failure :)
Why?
because the ondemand governor not keeping up with demand doesn't sound
like a big success to me.
cheers
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mattia
:wq!
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No, I meant that those numbers were really a power saving failure :)
Why?
Alright, let me add something like that (I may rename vaariables) on the
next upload.
No problem :)
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On Sun, Feb 20, 2011 at 06:35:53PM +0100, Fabien C. wrote:
Package: cpufrequtils
Version: 007-1
Severity: wishlist
Tags: patch
Hello,
Some CPUs (particularly from AMD) have a very high latency for frequency
changes. This is visible at the user level and can lead the user to change
Here is the bad guy:
AMD Athlon(tm) 64 X2 Dual Core Processor 4200+
Down freq: 1000MHz / Up freq: 2200MHz
/sys/devices/system/cpu/cpufreq/ondemand/sampling_rate:109000
/sys/devices/system/cpu/cpufreq/ondemand/sampling_rate_min:10900
On Mon, Feb 21, 2011 at 07:06:35PM +0100, Fabien C. wrote:
...
Here are my results in GB/s (several averages) for the AMD CPU:
...
but this looks really awful in terms of powersaving.
Why? Because sampling often is power consuming?
No, I meant that those numbers were really a power saving
Package: cpufrequtils
Version: 007-1
Severity: wishlist
Tags: patch
Hello,
Some CPUs (particularly from AMD) have a very high latency for frequency
changes. This is visible at the user level and can lead the user to change it's
cpufreq governor to performance, thus wasting energy.
This is
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