Date: Thu, 13 Feb 2003 17:54:08 -0500 From: Scott Lambert <lambert@lambertfam.org> To: stable@FreeBSD.ORG Subject: Re: 4.7-stable & smp Message-ID: <20030213225407.GA95825@laptop.lambertfam.org> In-Reply-To: <3E4BF169.7010402@pantherdragon.org> References: <9256D57F598E6C41B288AA7DB94F29C9604A2A@pgnmail1.pgnaplikace.cz> <3E4BF169.7010402@pantherdragon.org>
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On Thu, Feb 13, 2003 at 11:26:33AM -0800, Darren Pilgrim wrote: > Roub?cek Zdenek (PragoNet) wrote: > > > > Any chance to disable it (hyperthreading)? I just want 2 physical CPUs > > not 4 virtual working. > > JOOC, why don't you want it enabled? My understanding of the concept is > HT allows the CPU to more fully utilize the available host bus bandwidth > since a single, deep pipline won't normally make full use of a 200MHz > host bus. Assuming the SMP code in FreeBSD is effective, I'd think you > seriously cut into the CPU's performance by disabling HT. Not if you only have two CPU intensive processes. -- Scott Lambert KC5MLE Unix SysAdmin lambert@lambertfam.org To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-stable" in the body of the message
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