Date: Tue, 07 Sep 2010 13:40:33 +0200 From: Ian FREISLICH <ianf@clue.co.za> To: Peter Jeremy <peterjeremy@acm.org> Cc: FreeBSD-Current <freebsd-current@FreeBSD.org> Subject: Re: One-shot-oriented event timers management Message-ID: <E1OswXR-000313-HY@clue.co.za> In-Reply-To: <20100907112040.GA71734@server.vk2pj.dyndns.org> References: <20100907112040.GA71734@server.vk2pj.dyndns.org> <20100830110932.23425932@ernst.jennejohn.org> <4C7B82EA.2040104@FreeBSD.org> <20100830121148.11926306@ernst.jennejohn.org> <20100831102918.4f5404cc@ernst.jennejohn.org> <4C7CC1DE.1080907@FreeBSD.org> <4C7E2E8A.3030709@FreeBSD.org> <AANLkTikcHn-SXk7Rx6NcSQKtBh-Df-g2pzeU%2BzHor9Vy@mail.gmail.com> <4C7EA696.3030901@FreeBSD.org> <E1Or5xj-0000Oo-Nh@clue.co.za> <E1Or7eb-0000NW-Fg@clue.co.za>
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Peter Jeremy wrote: > On 2010-Sep-02 13:08:25 +0200, Ian FREISLICH <ianf@clue.co.za> wrote: > >It's a compaq mini-110: > >CPU: Intel(R) Atom(TM) CPU N270 @ 1.60GHz (1596.22-MHz 686-class CPU) > > Hmmm... I have a N270 in an Aspire One. > > >dev.cpu.0.freq_levels: 1600/25000 1400/21875 1333/18000 1166/15750 1067/11= > 000 933/9625 800/5000 700/4375 600/3750 500/3125 400/2500 300/1875 200/1250= > 100/625 > > That's rather more frequencies than I would expect. Do you have > acpi_throttle enabled? If so, you might like to disable it - it's not > particularly effective (and caused regular hands on my AMD Turion > laptop). No acpi_throttle in my sysctl mib: [mini] ~ $ sysctl -a |grep acpi_throttle [mini] ~ $ I can set all of these frequencies. They don't really save any power, they just make the system slow. > >dev.cpu.0.cx_supported: C1/1 C2/1 C3/17 C4/57 > > I'm also intrigued as to where C4 comes from. I have: > > dev.cpu.0.freq_levels: 1600/2000 1333/1533 1066/1066 800/600 > dev.cpu.0.cx_supported: C1/1 C2/1 C3/57 And I can set C4. But the acpi battery method can't determine the discharge rate so I don't know if it actually reduces power either. [mini] ~ $ acpiconf -i 0 Design capacity: 5100 mAh Last full capacity: 4952 mAh Technology: secondary (rechargeable) Design voltage: 10800 mV Capacity (warn): 496 mAh Capacity (low): 347 mAh Low/warn granularity: 0 mAh Warn/full granularity: 100 mAh Model number: Primary Serial number: Type: LION OEM info: Hewlett-Packard State: discharging Remaining capacity: 100% Remaining time: unknown Present rate: unknown Voltage: 12363 mV It might have something to do with the hardware verdor or bios vendor. Ian -- Ian Freislich
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