From owner-freebsd-current@FreeBSD.ORG  Wed Jun 22 15:08:55 2005
Return-Path: <owner-freebsd-current@FreeBSD.ORG>
X-Original-To: freebsd-current@freebsd.org
Delivered-To: freebsd-current@freebsd.org
Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125])
	by hub.freebsd.org (Postfix) with ESMTP id C668C16A41C;
	Wed, 22 Jun 2005 15:08:55 +0000 (GMT) (envelope-from bms@spc.org)
Received: from arginine.spc.org (arginine.spc.org [83.167.185.2])
	by mx1.FreeBSD.org (Postfix) with ESMTP id 8562143D1F;
	Wed, 22 Jun 2005 15:08:55 +0000 (GMT) (envelope-from bms@spc.org)
Received: from localhost (localhost [127.0.0.1])
	by arginine.spc.org (Postfix) with ESMTP
	id 5082565339; Wed, 22 Jun 2005 16:08:54 +0100 (BST)
Received: from arginine.spc.org ([127.0.0.1])
	by localhost (arginine.spc.org [127.0.0.1]) (amavisd-new, port 10024)
	with LMTP id 75751-01-2; Wed, 22 Jun 2005 16:08:53 +0100 (BST)
Received: from empiric.dek.spc.org (host81-136-156-39.in-addr.btopenworld.com
	[81.136.156.39])
	(using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits))
	(No client certificate requested)
	by arginine.spc.org (Postfix) with ESMTP
	id A5D216530A; Wed, 22 Jun 2005 16:08:53 +0100 (BST)
Received: by empiric.dek.spc.org (Postfix, from userid 1001)
	id 4DB3E61F0; Wed, 22 Jun 2005 16:08:42 +0100 (BST)
Date: Wed, 22 Jun 2005 16:08:42 +0100
From: Bruce M Simpson <bms@spc.org>
To: Robert Watson <rwatson@FreeBSD.org>
Message-ID: <20050622150842.GF791@empiric.icir.org>
Mail-Followup-To: Robert Watson <rwatson@FreeBSD.org>,
	Emanuel Strobl <Emanuel.strobl@gmx.net>,
	Dag-Erling =?iso-8859-1?Q?Sm=F8rgrav?= <des@des.no>,
	freebsd-current@freebsd.org
References: <200506091423.39940@harrymail> <200506221554.41750@harrymail>
	<42B96E66.4040503@samsco.org> <200506221606.42862@harrymail>
	<20050622154538.H26664@fledge.watson.org>
Mime-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline
In-Reply-To: <20050622154538.H26664@fledge.watson.org>
Cc: Emanuel Strobl <Emanuel.strobl@gmx.net>,
	Dag-Erling =?iso-8859-1?Q?Sm=F8rgrav?= <des@des.no>,
	freebsd-current@freebsd.org
Subject: Re: lapic@2k interrukts eating CPU cycles
X-BeenThere: freebsd-current@freebsd.org
X-Mailman-Version: 2.1.5
Precedence: list
List-Id: Discussions about the use of FreeBSD-current
	<freebsd-current.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-current>, 
	<mailto:freebsd-current-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/freebsd-current>
List-Post: <mailto:freebsd-current@freebsd.org>
List-Help: <mailto:freebsd-current-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-current>,
	<mailto:freebsd-current-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Wed, 22 Jun 2005 15:08:55 -0000

On Wed, Jun 22, 2005 at 03:50:24PM +0100, Robert Watson wrote:
> I have a feature request in to John to add statistics gathering on IPIs, 
> since he's currently reworking the interrupt paths.

I like this LAPIC change a lot. Actually I like APICs a lot. They may not
give you 'real' vectored hardware interrupts a la SPARC and PowerPC, but
at least it comes a bit closer.

It would be nice to be doing APIC on uniprocessor systems a bit further
down the line, but that's for the wishlist -- the 8259s are not going away
just yet.

Regards,
BMS