Date: Fri, 16 Apr 2021 14:06:25 -0400 From: LuMiWa <lumiwa@dismail.de> To: Pete Wright <pete@nomadlogic.org> Cc: FreeBSD Questions <freebsd-questions@freebsd.org> Subject: Re: hyperthreading Message-ID: <20210416140625.05a79920@dismail.de> In-Reply-To: <e72a03bf-00e1-ddb8-3829-f818589af9fc@nomadlogic.org> References: <20210415192527.49375f7f@dismail.de> <e72a03bf-00e1-ddb8-3829-f818589af9fc@nomadlogic.org>
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On Thu, 15 Apr 2021 17:29:11 -0700 Pete Wright <pete@nomadlogic.org> wrote: > > > On 4/15/21 4:25 PM, LuMiWa via freebsd-questions wrote: > > H1! > > > > I have FreeBSD 13.0-RELEASE on Thinkpad T495. For now I had just > > Intel processors and T495 has > > > > Machine class: amd64 > > CPU Model: AMD Ryzen 5 PRO 3500U w/ Radeon Vega Mobile Gfx > > No. of Cores: 8 > > > > I had hyperthreading disabled in boot/loader.conf: > > > > machdep.hyperthreading_allowed=0 > > Is with AMD processors the same. I had also installed devcpu-data. > > Should I do the same on the laptop, please? > > yes i believe the same loader knob is used for AMD cpu's. here's one > of my hosts with an Epyc CPU: > CPU: AMD EPYC 7302P 16-Core Processor (3000.06-MHz > K8-class CPU) > > $ sysctl machdep.hyperthreading_allowed > machdep.hyperthreading_allowed: 1 > $ sysctl hw.ncpu > hw.ncpu: 32 > $ > > > cheers, > -pete > Thank you. -- “We live in a world where there is more and more information, and less and less meaning.” Jean Baudrillardhome | help
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