From owner-svn-src-all@FreeBSD.ORG Tue Mar 15 21:31:16 2011 Return-Path: Delivered-To: svn-src-all@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 383A6106566B; Tue, 15 Mar 2011 21:31:16 +0000 (UTC) (envelope-from kostikbel@gmail.com) Received: from mail.zoral.com.ua (mx0.zoral.com.ua [91.193.166.200]) by mx1.freebsd.org (Postfix) with ESMTP id A0F908FC16; Tue, 15 Mar 2011 21:31:15 +0000 (UTC) Received: from deviant.kiev.zoral.com.ua (root@deviant.kiev.zoral.com.ua [10.1.1.148]) by mail.zoral.com.ua (8.14.2/8.14.2) with ESMTP id p2FLVAsK012284 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NO); Tue, 15 Mar 2011 23:31:11 +0200 (EET) (envelope-from kostikbel@gmail.com) Received: from deviant.kiev.zoral.com.ua (kostik@localhost [127.0.0.1]) by deviant.kiev.zoral.com.ua (8.14.4/8.14.4) with ESMTP id p2FLVAtZ056769; Tue, 15 Mar 2011 23:31:10 +0200 (EET) (envelope-from kostikbel@gmail.com) Received: (from kostik@localhost) by deviant.kiev.zoral.com.ua (8.14.4/8.14.4/Submit) id p2FLVAqE056768; Tue, 15 Mar 2011 23:31:10 +0200 (EET) (envelope-from kostikbel@gmail.com) X-Authentication-Warning: deviant.kiev.zoral.com.ua: kostik set sender to kostikbel@gmail.com using -f Date: Tue, 15 Mar 2011 23:31:10 +0200 From: Kostik Belousov To: Jung-uk Kim Message-ID: <20110315213110.GM78089@deviant.kiev.zoral.com.ua> References: <201103142205.p2EM5x6E012664@svn.freebsd.org> <201103151526.14264.jkim@FreeBSD.org> <201103151551.54196.jhb@freebsd.org> <201103151721.42664.jkim@FreeBSD.org> Mime-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="VBPz+4ZpWFKX9Cmp" Content-Disposition: inline In-Reply-To: <201103151721.42664.jkim@FreeBSD.org> User-Agent: Mutt/1.4.2.3i X-Spam-Status: No, score=-3.4 required=5.0 tests=ALL_TRUSTED,AWL,BAYES_00, DNS_FROM_OPENWHOIS autolearn=no version=3.2.5 X-Spam-Checker-Version: SpamAssassin 3.2.5 (2008-06-10) on skuns.kiev.zoral.com.ua Cc: svn-src-head@freebsd.org, svn-src-all@freebsd.org, src-committers@freebsd.org, Bruce Evans , John Baldwin Subject: Re: svn commit: r219646 - head/sys/x86/isa X-BeenThere: svn-src-all@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: "SVN commit messages for the entire src tree \(except for " user" and " projects" \)" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 15 Mar 2011 21:31:16 -0000 --VBPz+4ZpWFKX9Cmp Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Tue, Mar 15, 2011 at 05:21:34PM -0400, Jung-uk Kim wrote: > However, why do we need cheaper DELAY() when we trying to "delay"=20 > something with it? Busy-loop performing repeated access to the south bridge eats the bus capacity, that could be useful for other bus agent and other cores. I think this is the case with HPET, while TSC is core-local. --VBPz+4ZpWFKX9Cmp Content-Type: application/pgp-signature Content-Disposition: inline -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.11 (FreeBSD) iEYEARECAAYFAk1/2p4ACgkQC3+MBN1Mb4is3QCgmBXPYx4yA89Z/yWWBj3r37xE YOcAoIx7l8tJVRDFgnehaTa/ukDAm6Lj =Qmcu -----END PGP SIGNATURE----- --VBPz+4ZpWFKX9Cmp--