From owner-cvs-src@FreeBSD.ORG Wed Feb 9 04:12:22 2005 Return-Path: Delivered-To: cvs-src@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 95F1116A4CE; Wed, 9 Feb 2005 04:12:22 +0000 (GMT) Received: from dragon.nuxi.com (trang.nuxi.com [66.93.134.19]) by mx1.FreeBSD.org (Postfix) with ESMTP id 5A2D243D2F; Wed, 9 Feb 2005 04:12:22 +0000 (GMT) (envelope-from obrien@NUXI.com) Received: from dragon.nuxi.com (obrien@localhost [127.0.0.1]) by dragon.nuxi.com (8.13.1/8.13.1) with ESMTP id j194CLxa016714; Tue, 8 Feb 2005 20:12:21 -0800 (PST) (envelope-from obrien@dragon.nuxi.com) Received: (from obrien@localhost) by dragon.nuxi.com (8.13.1/8.13.1/Submit) id j194CLJu016713; Tue, 8 Feb 2005 20:12:21 -0800 (PST) (envelope-from obrien) Date: Tue, 8 Feb 2005 20:12:21 -0800 From: "David O'Brien" To: John Baldwin Message-ID: <20050209041221.GA16675@dragon.nuxi.com> References: <200502082025.j18KP72E069507@repoman.freebsd.org> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <200502082025.j18KP72E069507@repoman.freebsd.org> User-Agent: Mutt/1.4.1i X-Operating-System: FreeBSD 6.0-CURRENT Organization: The NUXI BSD Group X-Pgp-Rsa-Fingerprint: B7 4D 3E E9 11 39 5F A3 90 76 5D 69 58 D9 98 7A X-Pgp-Rsa-Keyid: 1024/34F9F9D5 cc: cvs-src@FreeBSD.org cc: src-committers@FreeBSD.org cc: cvs-all@FreeBSD.org Subject: Re: cvs commit: src/sys/i386/i386 apic_vector.s local_apic.c mp_machdep.c src/sys/i386/include apicvar.h smp.h src/sys/i386/isa clock.c X-BeenThere: cvs-src@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list Reply-To: obrien@FreeBSD.org List-Id: CVS commit messages for the src tree List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 09 Feb 2005 04:12:22 -0000 On Tue, Feb 08, 2005 at 08:25:07PM +0000, John Baldwin wrote: > jhb 2005-02-08 20:25:07 UTC > > FreeBSD src repository > > Modified files: > sys/i386/i386 apic_vector.s local_apic.c mp_machdep.c > sys/i386/include apicvar.h smp.h > sys/i386/isa clock.c > Log: > Use the local APIC timer to drive the various kernel clocks on SMP machines > rather than forwarding interrupts from the clock devices around using IPIs: > - Add an IDT vector that pushes a clock frame and calls > lapic_handle_timer(). What is the performance improvement of this? What benchmark is used to show a benefit? -- -- David (obrien@FreeBSD.org)