Date: Mon, 22 Dec 2008 13:15:51 -0800 From: "Garrett Cooper" <yanefbsd@gmail.com> To: "David van Kuijk" <dynasore@bigfoot.com> Cc: acpi <acpi@freebsd.org> Subject: Re: Problem on AMD64 Message-ID: <7d6fde3d0812221315s4d03e15dw4b84679b98a6308f@mail.gmail.com> In-Reply-To: <49500088.2080609@bigfoot.com> References: <20081221233822.7E92545020@ptavv.es.net> <49500088.2080609@bigfoot.com>
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On 12/22/08, David van Kuijk <dynasore@bigfoot.com> wrote: > OK, thanks again. I didn't know those tools. est is not supported om > AMD64, but I will start experimenting with powerd. > > The main thing I want to accomplish is to lower my energy bill after I > found out my server is costing me 50 cents a day of electricity. So any > other ideas (besides powering off ;-) are welcome... > > Regards, > David > > Kevin Oberman wrote: >>> Date: Sun, 21 Dec 2008 22:31:04 +0100 >>> From: David van Kuijk <dynasore@bigfoot.com> >>> Sender: owner-freebsd-acpi@freebsd.org >>> >>> Thanks for the responses so far. >>> >>> I would be happy with S3. I am however a little confused about the >>> abilities of my server as reported by sysctl hw.acpi. >>> >>> As commented below this line suggests that no other states than S4/S5 >>> are supported: >>> hw.acpi.supported_sleep_state: S4 S5 >>> >>> But this is also listed: >>> hw.acpi.standby_state: S1 >>> hw.acpi.suspend_state: S3 >>> >>> Are these last two overridden by the first, meaning that S3 is not >>> available from my BIOS??? >> >> Yes. FreeBSD, by default, sets up standby as S1 and suspend to S3 because >> almost all BIOSes support these states. Yours is the first BIOS I have >> seen that does not do S1. That is really odd. >> >> In any case, you have no available ways to cut power when your system is >> really idle other than powering off. Of course, you may be able to do >> some power saving with powerd and EST if your BIOS and CPU support those. Look into the following sysctls: hw.acpi.cpu.cx_lowest hw.acpi.cpu.cx_highest Unfortunately [for you] est and PT4CC are completely Intel specific power regulation interfaces. AMD had something to offer on Linux, but I forget what that was... Cheers, -Garrett
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