Date: Mon, 12 Jul 2021 14:20:35 -0700 From: "Thomas D. Dean" <tomdean@wavecable.com> To: freebsd-questions@freebsd.org Subject: Re: How do I disable CPU throttling Message-ID: <70f2bdef-ab37-7977-63f8-12e0d9a59e2c@wavecable.com> In-Reply-To: <4d1e32fc-3e77-626e-138b-6af872445c5e@wavecable.com> References: <f982b8fd-0ec0-24a9-8272-4da3bd5d19c4@wavecable.com> <0be4883a-6bf6-28bc-a14b-9cb1f6d729ae@wavecable.com> <CAFbbPuhuWdzjfH2e7RSwiUa2UORAoJE_-yQeqyoMz7gTMjfxTA@mail.gmail.com> <4d1e32fc-3e77-626e-138b-6af872445c5e@wavecable.com>
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On 7/12/21 2:01 PM, Thomas D. Dean wrote: > On 7/12/21 1:12 PM, Paul Procacci wrote: >> sysctl's get set generally in /etc/sysctl.conf >> >> dev.cpu.0.freq_levels <-- This format is called a mib in the native >> parlance. >> sysctl.conf(5) and sysctl(8) go into much further detail. >> >> ~Paul > > > > grep -Rail freq_levels /etc/* > shows the source of freq_levels Wow! Should be: does not show the source of freq_levels > > I believe this is hardwired somewhere. Maybe read from the cpu? BIOS? > >> >> On Mon, Jul 12, 2021 at 3:55 PM Thomas D. Dean <tomdean@wavecable.com >> <mailto:tomdean@wavecable.com>> wrote: >> >> On 7/12/21 3:48 AM, Thomas D. Dean wrote: >> > 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? >> >> >> where does dev.cpu.0.freq_levels get set at boot time? >> >> > sysctl -n dev.cpu.0.freq_levels >> 3700/4070 2800/2800 2200/1980 >> >> Looks like this is hardwired somewhere. >> >> I searched src/sys/* and found nothing, unless I missed it. grep'd >> freq_levels, 3700, 4070 >> _______________________________________________ >> freebsd-questions@freebsd.org <mailto:freebsd-questions@freebsd.org> >> mailing list >> https://lists.freebsd.org/mailman/listinfo/freebsd-questions >> <https://lists.freebsd.org/mailman/listinfo/freebsd-questions>; >> To unsubscribe, send any mail to >> "freebsd-questions-unsubscribe@freebsd.org >> <mailto:freebsd-questions-unsubscribe@freebsd.org>" >> >> >> >> -- >> __________________ >> >> :(){ :|:& };: > > _______________________________________________ > freebsd-questions@freebsd.org mailing list > https://lists.freebsd.org/mailman/listinfo/freebsd-questions > To unsubscribe, send any mail to > "freebsd-questions-unsubscribe@freebsd.org"
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