Date: Tue, 13 Dec 2005 14:54:54 -0500 From: Kris Kennaway <kris@obsecurity.org> To: robert@webtent.com Cc: FreeBSD <freebsd-questions@freebsd.org> Subject: Re: Multiple CPUs Message-ID: <20051213195454.GA59033@xor.obsecurity.org> In-Reply-To: <1134501177.13444.56.camel@columbus.webtent.org> References: <1134501177.13444.56.camel@columbus.webtent.org>
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--FL5UXtIhxfXey3p5 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Tue, Dec 13, 2005 at 02:12:57PM -0500, Robert Fitzpatrick wrote: > I guess this means my new server is only using one of my CPUs? >=20 > esmtp# grep CPU /var/log/dmesg.today > CPU: Intel(R) Xeon(TM) CPU 2.40GHz (2399.33-MHz 686-class CPU) > Hyperthreading: 2 logical CPUs > cpu0: <ACPI CPU (2 Cx states)> on acpi0 >=20 > Can someone point me to the best doc for enabling use of both CPUs on > the FreeBSD 5.4 server? I assume the kernel needs built with options. FYI, hyperthreading is not a real CPU, and it seems to *really* hurt performance on most workloads. You'll probably benefit from not using it. Kris --FL5UXtIhxfXey3p5 Content-Type: application/pgp-signature Content-Disposition: inline -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.2 (FreeBSD) iD8DBQFDnycOWry0BWjoQKURAvy0AJ0Vp5BzAsh4ZnHx+BEIE11ylY+XnACg2TEK 2IErvINB5N/BT9U87JXgoxY= =Ig5j -----END PGP SIGNATURE----- --FL5UXtIhxfXey3p5--
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