Date: Sat, 26 Nov 2016 05:50:03 +0100 From: =?UTF-8?Q?Jakub_Lach?= <jakub_lach@mailplus.pl> To: =?UTF-8?Q?Adrian_Chadd?= <adrian.chadd@gmail.com> Cc: =?UTF-8?Q?FreeBSD_Stable_Mailing_List?= <freebsd-stable@freebsd.org> Subject: =?UTF-8?Q?Odp=3A_Re=3A_Bogus_turbo_mode_with_Intel=28R=29_Core=28TM=292_Duo_CPU_P9700_=282=2E80GHz=29?= Message-ID: <2cb8812a226d4c4080b682ae50b85b05@gwp> In-Reply-To: <CAJ-Vmoncy-m0fPYrRQZVphXMogHXWuZMSLSK9sv8fY7zp5uudQ@mail.gmail.com> References: <CAJ-Vmoncy-m0fPYrRQZVphXMogHXWuZMSLSK9sv8fY7zp5uudQ@mail.gmail.com> <1480133771286-6147461.post@n6.nabble.com>
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Thanks for reply! If I've understood you correctly, that means the AC=
PI=C2=A0 table somehow provides (lists) turbo mode for this CPU even tho=
ugh it does not support it [1]? Is there a way to check it's real spe=
ed under load? I'm guessing no. [1] ark.intel.com ark.intel.com
Dnia 26 listopada 2016 05:40 Adrian Chadd <adrian.chad=
d@gmail.com> napisa=C5=82(a):
the acpi cpu frequency module just exposes the frequency=
lis given to
it by ACPI. If your ACPI table exposes the turbo boost frequency but
doesn't implement it on the backend, FreeBSD doesn't know. We just=
obey what we're told. :)
-a
On 25 November 2016 at 20:16, Jakub Lach <jakub_lach@mailplus.pl> wr=
ote:
Hello,
Since I'm running this CPU, I've noticed there is additional
field in supported frequency (under heavy load)-
dev.cpu.0.cx_supported: C1/1/1 C2/2/1 C3/3/57
dev.cpu.0.freq_levels: 2801/35000 2800/35000 2450/30625 2133/23888
1866/20902 1600/15000 1400/13125 1200/11250 1000/9375 800/12000 700/10500
600/9000 500/7500 400/6000 300/4500 200/3000 100/1500
dev.cpu.0.freq: 2801
dev.cpu.0.temperature: 67,0C
as far as I know, the +1 MHz mode is a turbo boost factory
overclock, however this CPU does not support it. Anybody knows
what's going on?
I've previously had T9400 (2.53 GHz), there was no such thing listed
and it was running slightly cooler under load, despite having higher
TDP (however P9700 is a lot cooler when idle, as expected).
Still, I don't think it is possible it's actually being overclocke=
d?
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