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<H1>[Mageia-discuss] Why would runlevel 3 take more power?</H1>
<B>Maarten Vanraes</B>
<A HREF="mailto:mageia-discuss%40mageia.org?Subject=Re%3A%20%5BMageia-discuss%5D%20Why%20would%20runlevel%203%20take%20more%20power%3F&In-Reply-To=%3C201110030924.01780.alien%40rmail.be%3E"
TITLE="[Mageia-discuss] Why would runlevel 3 take more power?">alien at rmail.be
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<I>Mon Oct 3 09:24:01 CEST 2011</I>
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<PRE>Op maandag 03 oktober 2011 03:35:44 schreef Norman Carver:
><i> Set up a new server for home use (DNS, files, etc.) and
</I>><i> was gratified to find it using around 50 watts when the
</I>><i> older machine it replaces was using around 90.
</I>><i> However, just before sticking it in the closet, I changed
</I>><i> it to runlevel 3 since I won't be using the GUI typically.
</I>><i> I had assumed this might reduce power usage a bit
</I>><i> more, but surprisingly it caused the power draw to go UP
</I>><i> by about 3 watts! I thought it a fluke, but verified that
</I>><i> this is a real phenomenon: the machine draws about
</I>><i> 3 watts less when X and KDE are running than when
</I>><i> they are not. Seems like running more processes should
</I>><i> cause more power usage. Any ideas what might be
</I>><i> causing what I see? Odd.
</I>><i>
</I>><i> I note that:
</I>><i> (1) I set kernel scaling_governor parameter for
</I>><i> each core to ondemand for any runlevel;
</I>><i> (2) whether logged into KDE or just sitting at the
</I>><i> DM the power usage is stabilizes at the same level
</I>><i> when in runlevel 5;
</I>><i> (3) I have not made any power settings in KDE and
</I>><i> the power applet is not running;
</I>><i> (4) runlevel 5 has all the same services as runleve 5
</I>><i> plus: dm and atieventsd.
</I>><i>
</I>><i> Thanks for any insights!
</I>><i> Norm
</I>
Perhaps when X and KDE is running, existing processes have less CPU time, due
to it and these processes take more power/CPUcycle than X/KDE?
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