Date: Tue, 12 Aug 2003 16:28:38 -0700 From: Brooks Davis <brooks@one-eyed-alien.net> To: Stephane Raimbault <segr@hotmail.com> Cc: current@freebsd.org Subject: Re: Dual P4 2.4Ghz Xeon With Hyperthreading enabled... Message-ID: <20030812232838.GA14311@Odin.AC.HMC.Edu> In-Reply-To: <Law10-OE20BfyVbMRTQ000221f3@hotmail.com> References: <bhbrr5$2ftg$1@FreeBSD.csie.NCTU.edu.tw> <Law10-OE20BfyVbMRTQ000221f3@hotmail.com>
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--jI8keyz6grp/JLjh Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Tue, Aug 12, 2003 at 05:26:42PM -0600, Stephane Raimbault wrote: > Hi Brooks, >=20 > Thanks for responding... >=20 > However I'm confused by the terms used. Are you saying if I set it to 0,= I > would be using the processing power of all CPU's? I'm not sure how this > halted comes in to play, cuz the only thing that comes to mind is to halt > the machine as in shutdown.... I'm probably confusing terms here... can = you > expand and clarify? I just want to make sure what this all means. Also = is > this an option that can be modified via sysctl -w and the /etc/sysctl.conf > file ? Or is this going to have to be set in a boot option? When halted, the logical CPUs are rendered unavailable. This is the default. If you want the logical CPUs to work, you see the boolean sysctl to 0 telling the kernel to let them work. You can set the option any time you want. -- Brooks --jI8keyz6grp/JLjh Content-Type: application/pgp-signature Content-Disposition: inline -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.2.1 (GNU/Linux) iD8DBQE/OXglXY6L6fI4GtQRAv1zAKDb6mIAcmU0lFxTqp4mM1nLsWHPdwCgsWHl zjgb8ZAGTuq7J5gRAveoIUQ= =se3R -----END PGP SIGNATURE----- --jI8keyz6grp/JLjh--
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