Date: Sat, 10 Jan 2009 10:59:30 +0300 From: Dmitry Kolosov <ivakras1@gmail.com> To: freebsd-acpi@freebsd.org Subject: Re: EST (Enhanced Intel SpeedStep(R) Technology) on amd64 Message-ID: <200901101059.31131.ivakras1@gmail.com> In-Reply-To: <d05df8620901091200v5eba8908kda486b722f4643c9@mail.gmail.com> References: <d05df8620901081551j5572b45aqbed51e2955efccc8@mail.gmail.com> <496780A8.7070801@root.org> <d05df8620901091200v5eba8908kda486b722f4643c9@mail.gmail.com>
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On Friday 09 January 2009 23:00:03 Gabriel Lavoie wrote: > Another question. Any reason why powerd doesn't use > dev.est.0.freq_settings when it is available instead of > dev.cpu.0.freq_levels? > > On my system: > dev.cpu.0.freq_levels: 2500/88000 2187/77000 2000/47608 1750/41657 > 1600/44616 1400/39039 1200/41800 1050/36575 900/31350 750/26125 > 600/20900 450/15675 300/10450 150/5225 > dev.est.0.freq_settings: 2500/88000 2000/47608 1600/44616 1200/41800 > > If I don't lower the polling time of powerd to 100ms, my system > becomes way too much unresponsive because powerd takes too much time > to increase the frequency, step by step and there are a lot of > settings with dev.est.0.freq_settings (14). With > dev.est.0.freq_settings, the minimal setting is high enough so the > system stays responsive and powerd would bring it up to max frequency > quickly enough, even if the polling time is still kept at 500ms. This > would work more like Windows or Linux where the lowest frequency at > which the CPU will drop is the lowest EIST gives (here 1200 MHz). > > Gabriel > > 2009/1/9 Nate Lawson <nate@root.org>: > > Gabriel Lavoie wrote: > >> My processor seems correctly recognized by est under 7.1, I get the > >> correct frequency/value pairs. What I would like is the automatic > >> behaviour where the CPU is downclocked to 50% under no load, found > >> under Windows/Linux and I would also like to know why estctrl isn't > >> supported under amd64. I already contacted Colin. :) > > > > powerd(8) is what you want. You can set an absolute frequency for idle. > > > > -- > > Nate What this settings for in defaults/rc.conf? performance_cx_lowest="HIGH" # Online CPU idle state performance_cpu_freq="NONE" # Online CPU frequency economy_cx_lowest="HIGH" # Offline CPU idle state economy_cpu_freq="NONE" # Offline CPU frequency Im using it with powerd at the same time and it runs just smoothly.
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