Date: Fri, 12 Mar 2004 04:46:16 -0800 From: Kris Kennaway <kris@obsecurity.org> To: Donald Burr <dburr@borg-cube.com> Cc: List FreeBSD Questions <freebsd-questions@freebsd.org> Subject: Re: How much difference does 'gcc -O<x>' make? Message-ID: <20040312124616.GA41188@xor.obsecurity.org> In-Reply-To: <101C5248-740D-11D8-B665-000A95B9AE7E@borg-cube.com> References: <101C5248-740D-11D8-B665-000A95B9AE7E@borg-cube.com>
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--LQksG6bCIzRHxTLp Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Fri, Mar 12, 2004 at 02:07:26AM -0800, Donald Burr wrote: > A question occurred to me today. How much difference does 'gcc -O<x>'=20 > make in the speed of my system? >=20 > I notice some ports that claim to not work properly if compiled with=20 > -O<x> (the one that comes to mind right away is XFree86 4.x, but I've=20 > seen others) and I am thinking of just turning OFF -O<x> option in my=20 > /etc/make.conf. I'm just wondering how much of an impact this will=20 > have on system performance. I think you're misunderstanding: -O is almost universally fine, it's higher settings (-O2, etc) that are recommended against. Kris --LQksG6bCIzRHxTLp Content-Type: application/pgp-signature Content-Disposition: inline -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.2.4 (FreeBSD) iD8DBQFAUbEYWry0BWjoQKURAuufAJwOkYufk2lxIkrB7vqa+PW2ydQLIgCePEle 4VqmuZbaQMBa5lX4rHu8r4Y= =lvgL -----END PGP SIGNATURE----- --LQksG6bCIzRHxTLp--
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