From owner-freebsd-stable@FreeBSD.ORG Mon Oct 8 16:59:06 2007 Return-Path: Delivered-To: freebsd-stable@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 4BA6516A41A for ; Mon, 8 Oct 2007 16:59:06 +0000 (UTC) (envelope-from delphij@delphij.net) Received: from tarsier.geekcn.org (tarsier.geekcn.org [210.51.165.229]) by mx1.freebsd.org (Postfix) with ESMTP id 0268F13C459 for ; Mon, 8 Oct 2007 16:59:05 +0000 (UTC) (envelope-from delphij@delphij.net) Received: from localhost (tarsier.geekcn.org [210.51.165.229]) by tarsier.geekcn.org (Postfix) with ESMTP id 64ABFEB915F; Tue, 9 Oct 2007 00:59:05 +0800 (CST) X-Virus-Scanned: amavisd-new at geekcn.org Received: from tarsier.geekcn.org ([210.51.165.229]) by localhost (mail.geekcn.org [210.51.165.229]) (amavisd-new, port 10024) with ESMTP id anMlE2DIImT1; Tue, 9 Oct 2007 00:58:54 +0800 (CST) Received: from LI-Xins-MacBook.local (71.5.7.139.ptr.us.xo.net [71.5.7.139]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by tarsier.geekcn.org (Postfix) with ESMTP id E7E78EB9142; Tue, 9 Oct 2007 00:58:53 +0800 (CST) DomainKey-Signature: a=rsa-sha1; s=default; d=delphij.net; c=nofws; q=dns; h=message-id:date:from:reply-to:organization:user-agent: mime-version:to:cc:subject:references:in-reply-to: x-enigmail-version:openpgp:content-type; b=IriQVUjb3SbpTGnpPxqkWhTUroWHqun7S3ySQB4LRgM/Ziojh41bmU8R4SZUkocRY TFU9gat3uVwTFXxbxvc/Q== Message-ID: <470A61C4.2090809@delphij.net> Date: Mon, 08 Oct 2007 09:58:44 -0700 From: LI Xin Organization: The FreeBSD Project User-Agent: Thunderbird 2.0.0.6 (Macintosh/20070728) MIME-Version: 1.0 To: Jeff Kramer References: In-Reply-To: X-Enigmail-Version: 0.95.3 OpenPGP: url=http://www.delphij.net/delphij.asc Content-Type: multipart/signed; micalg=pgp-sha512; protocol="application/pgp-signature"; boundary="------------enigE9D57AFDA0387050B0ED832F" Cc: freebsd-stable@freebsd.org Subject: Re: PAE Slowdown X-BeenThere: freebsd-stable@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list Reply-To: d@delphij.net List-Id: Production branch of FreeBSD source code List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 08 Oct 2007 16:59:06 -0000 This is an OpenPGP/MIME signed message (RFC 2440 and 3156) --------------enigE9D57AFDA0387050B0ED832F Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable Jeff Kramer wrote: > Hey all, >=20 > I know that AMD64's the preferred way to run >4 gig systems, but I'm > having a weird situation with 6.2-RELEASE-p8 and 6-STABLE as of last > night. When I compile the PAE kernel, my system performance drops like= > a rock. It still boots and everything still runs, but for instance, > running the Flops port my megaflops drop from the 950 MFLOPS range to 4= > MFLOPS. It feels about as fast as a 486. >=20 > I'm not sure what I should try disabling. I tried nodevice usb, but > that didn't seem to change anything. SMP and GENERIC kernels work fine= =2E >=20 > CPU: Intel Core Duo 2 Quad 2.4ghz > Memory: 8 gig (4 2 gig dimms) > Swap: 16 gig partition >=20 > If I try to boot without ACPI disabled the kernel doesn't finish > booting, it stops after ata7. Perhaps unrelated, but why don't you run amd64 version? I think PAE is a hack, for instance it does not allow processes to use more than 2GB memory, while AMD64 (called EM64T by Intel implementation) provides much more... Cheers, --=20 Xin LI http://www.delphij.net/ FreeBSD - The Power to Serve! --------------enigE9D57AFDA0387050B0ED832F Content-Type: application/pgp-signature; name="signature.asc" Content-Description: OpenPGP digital signature Content-Disposition: attachment; filename="signature.asc" -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.7 (Darwin) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org iD8DBQFHCmHEOfuToMruuMARCoD3AJ4qpirutMaN5fbKuMGWSEpq+03RrQCggv77 FH3ET7KVUDbHPrJurRQYsSo= =PpKo -----END PGP SIGNATURE----- --------------enigE9D57AFDA0387050B0ED832F--