Date: Wed, 10 Aug 2016 21:42:18 +0300 From: Aleksander Alekseev <afiskon@devzen.ru> To: Ian Smith <smithi@nimnet.asn.au> Cc: freebsd-questions@freebsd.org Subject: Re: Power consumption tuning Message-ID: <20160810214218.6788f2c1@e733> In-Reply-To: <20160811015734.D79687@sola.nimnet.asn.au> References: <mailman.109.1470830402.42128.freebsd-questions@freebsd.org> <20160811015734.D79687@sola.nimnet.asn.au>
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Hello, Ian. Thanks for a detailed reply! > Well [1] stresses the importance of using maximum available C-states > on your hardware. But except for powerd and C-states where possible, > I wouldn't bother with all that to save an extra few watts on a > desktop. > > > [1] https://wiki.freebsd.org/TuningPowerConsumption Well, I took a look on /etc/defaults/rc.conf and discovered that default values are: ``` performance_cx_lowest="C2" economy_cx_lowest="Cmax" ``` Since article describes C3 as a pretty dangerous thing I doubt that these parameters are worth tuning in my case. > What hardware? What OS version? 11.0-beta4 on Fujitsu Lifebook E733 laptop. BTW it's a great laptop for FreeBSD. Works everything including Wi-Fi adapter and hibernation. I didn't check bluetooth, webcam and fingerprint scanner though. I disabled this stuff in BIOS a long time ago since I don't use it anyway. -- Best regards, Aleksander Alekseev
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