Date: Tue, 25 Nov 2008 23:47:13 -0200 (BRST) From: "Nenhum_de_Nos" <matheus@eternamente.info> To: "Ian Smith" <smithi@nimnet.asn.au> Cc: freebsd-acpi@freebsd.org Subject: Re: RFC: powerd algorithms enhancements Message-ID: <7781fee0f8d1ea36bc8899f48a946fb6.squirrel@10.1.1.10> In-Reply-To: <20081112142137.Q70117@sola.nimnet.asn.au> References: <491404BF.1090807@FreeBSD.org> <49186111.9020103@root.org> <a9fa663801c704c0ec9a2a8af2b2c689.squirrel@10.1.1.10> <20081111161549.U70117@sola.nimnet.asn.au> <7d13c992592d1976010179b40b26c057.squirrel@cygnus.homeunix.com> <1226449830.1244.30.camel@RabbitsDen> <20081112142137.Q70117@sola.nimnet.asn.au>
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answering two in a row ... On Wed, November 12, 2008 1:41 am, Ian Smith wrote: > On Tue, 11 Nov 2008, Alexandre "Sunny" Kovalenko wrote: > > On Tue, 2008-11-11 at 15:56 -0200, Nenhum_de_Nos wrote: > > > On Tue, November 11, 2008 3:20 am, Ian Smith wrote: > > > > On Mon, 10 Nov 2008, Nenhum_de_Nos wrote: > > > > > as all you are talking about the subject, and I read all > messages, is > > > > > there any module to load and make my AthlonXP 1700+ use less > power ? > > > > > > > > > > running 7-STABLE, just a file server. any acpi-stuff I could > enable > > > > would > > > > > be great, as I just use all its power when compiling ... > > > > > > > > What does 'sysctl hw.acpi dev.cpu' have to say? > > > > > [...] > > Reinjecting a bit .. > > > hw.acpi.thermal.user_override: 0 > > hw.acpi.thermal.tz0.temperature: 43.0C > > hw.acpi.thermal.tz0.active: -1 > > hw.acpi.thermal.tz0.passive_cooling: 1 > > hw.acpi.thermal.tz0.thermal_flags: 0 > > hw.acpi.thermal.tz0._PSV: 66.0C > > hw.acpi.thermal.tz0._HOT: -1 > > hw.acpi.thermal.tz0._CRT: 70.0C > > hw.acpi.thermal.tz0._ACx: 66.0C -1 -1 -1 -1 -1 -1 -1 -1 -1 > > hw.acpi.thermal.tz0._TC1: 4 > > hw.acpi.thermal.tz0._TC2: 3 > > hw.acpi.thermal.tz0._TSP: 60 > > hw.acpi.cpu.cx_lowest: C1 > > Certainly no cpu frequency control. Surprisingly low _CRT temperature > but unless it ever actually gets too hot, it's not a problem. I don't > really follow why .passive-cooling=1 with no cpufreq driver/s attached? I have no idea also ... the cooling is indeed active ... > > > [root@xxx ~]# sysctl dev.cpu > > > dev.cpu.0.%desc: ACPI CPU > > > dev.cpu.0.%driver: cpu > > > dev.cpu.0.%location: handle=\_PR_.CPU0 > > > dev.cpu.0.%pnpinfo: _HID=none _UID=0 > > > dev.cpu.0.%parent: acpi0 > > > dev.cpu.0.cx_supported: C1/0 C2/90 C3/900 > > > dev.cpu.0.cx_lowest: C1 > > > dev.cpu.0.cx_usage: 100.00% 0.00% 0.00% > > > [root@xxx ~]# > > > > > > if it rings any bells :) > > All I can suggest here is > > > > sysctl dev.cpu.0.cx_lowest="C3" got the system unresponsive to the point of a hard reset needed ... > > or, if it gets you totally unresponsive machine, > > > > sysctl dev.cpu.0.cx_lowest="C2" not much time in it, I must confess, bit didn't see any lowering in power consumption, will try again ... > > how much of the power saving you will see from this is the > > separate question. > > If that works to any extent you'll notice some drop in cpu temperature. > I do see a slight but noticeable idle temp. drop on my T23 in C2, though > nothing compared to the power reduction of lower frequency (about half). that was all I wanted, but as said that this cpu is older than yours, I really don't think I'll get all that ... > cheers, Ian thanks to all, matheus -- We will call you cygnus, The God of balance you shall be
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