Date: Mon, 12 Jul 2021 03:48:07 -0700 From: "Thomas D. Dean" <tomdean@wavecable.com> To: FreeBSD Questions <freebsd-questions@freebsd.org> Subject: How do I disable CPU throttling Message-ID: <f982b8fd-0ec0-24a9-8272-4da3bd5d19c4@wavecable.com>
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I want to run this system at a fixed freq. It has beefed-up cooling.
How do I do this?
> uname -a
FreeBSD aorus 13.0-RELEASE FreeBSD 13.0-RELEASE #0:
Sat Jul 10 23:47:01 PDT 2021
tomdean@aorus:/usr/obj/usr/src/amd64.amd64/sys/GENERIC amd64
From dmidecode:
MB: Gigabyte TRX40 AORUS XTREME
CPU: AMD Ryzen Threadripper 3970X
Max Speed: 4550 MHz
Current Speed: 3700 MHz
# sysctl dev.cpu | grep freq
dev.cpu.0.freq_levels: 3700/4070 2800/2800 2200/1980
dev.cpu.0.freq: 2200
#sysctl dev.cpu.0.freq=3700
dev.cpu.0.freq: 2200 -> 3700
=== wait 30 sec
# sysctl dev.cpu.0.freq
dev.cpu.0.freq: 2200
Why does dmidecode (via cpu-x) report a different value than
sysctl dev.cpu.0.freq?
Tom Dean
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