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Date:      Fri, 22 May 2015 16:28:49 +0300
From:      Kimmo Paasiala <kpaasial@gmail.com>
To:        Ivan Klymenko <fidaj@ukr.net>
Cc:        Nikos Vassiliadis <nvass@gmx.com>,  "freebsd-stable@freebsd.org" <freebsd-stable@freebsd.org>
Subject:   Re: CPU frequency doesn't drop below 1200MHz (like it used to)
Message-ID:  <CA%2B7WWSfnsKn1Z3n1KS39iFZ%2B22ZzLsCke7mtnP%2BSAZh6M_cxCg@mail.gmail.com>
In-Reply-To: <20150522104213.4e083225@nonamehost.local>
References:  <555C71C8.4080007@gmx.com> <555EDBBB.4090107@gmx.com> <20150522104213.4e083225@nonamehost.local>

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On Fri, May 22, 2015 at 10:42 AM, Ivan Klymenko <fidaj@ukr.net> wrote:
> Fri, 22 May 2015 09:33:15 +0200
> Nikos Vassiliadis <nvass@gmx.com> =D0=BD=D0=B0=D0=BF=D0=B8=D1=81=D0=B0=D0=
=B2:
>
>> Hi,
>>
>> I just noticed that my CPU's frequency doesn't support dropping
>> below 1200MHz. It used to be able to go down to 150MHz, if I am
>> not mistaken. I'd like it to go down to 600MHz via powerd, like
>> it used to go. This is a month's old 10-STABLE.
>>
>> > [nik@moby ~]$ sysctl dev.cpu.0.freq_levels
>> > dev.cpu.0.freq_levels: 2400/35000 2300/32872 2200/31127 2100/29417
>> > 2000/27740 1900/26096 1800/24490 1700/22588 1600/21045 1500/19534
>> > 1400/18055 1300/16611 1200/15194
>>
>> This is the CPU:
>>  > hw.model: Intel(R) Core(TM) i3-3110M CPU @ 2.40GHz
>>
>> Thanks in advance for any ideas,
>> Nikos
>
> Try changing the options in /boot/device.hints
> hint.acpi_throttle.0.disabled=3D"0"
> hint.p4tcc.0.disabled=3D"0"

Thanks, those also fixed powerd(8) for me that stopped working after
upgrading to stable/10 from releng/10.1. Why are those setting
suddenly needed now?

-Kimmo



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