Date: Tue, 24 May 2005 14:20:46 -0300 From: Franco Bruno Borghesi <fborghesi@gmail.com> To: Kirk Strauser <kirk@strauser.com> Cc: freebsd-questions@freebsd.org Subject: Re: Top only showing one active CPU on HTT system Message-ID: <e13c14ec05052410204328e133@mail.gmail.com> In-Reply-To: <200505241200.55346.kirk@strauser.com> References: <200505241053.36377.kirk@strauser.com> <200505241159.24346.kellers@njit.edu> <200505241200.55346.kirk@strauser.com>
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I'm curious... doesn't enabling ht make your system run slower? That's what= =20 I had found searching on google a while ago, and that's why I have never=20 enabled ht on my kernels. 2005/5/24, Kirk Strauser <kirk@strauser.com>: >=20 > On Tuesday 24 May 2005 10:59, Tim Kellers wrote: >=20 > > The acpi_load=3D"YES" in /boot/loader.conf might do the trick. >=20 > Actually, it turns out that I have to set machdep.hyperthreading_allowed= =3D1 > for HTT to work now. >=20 > Speaking of which, is that tunable documented anywhere besides the HTT > security PR? It's not in the 5.4-STABLE /usr/src/UPDATING or anyplace els= e > I've looked, so I was more than a bit surprised to find that such an > important default was changed without much notice. I imagine a lot of > people read the PR much as I did: "blah, blah, theoretical, doesn't affec= t > me, next message"... > -- > Kirk Strauser >=20 >=20 >
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