From owner-freebsd-net@FreeBSD.ORG  Fri Sep 30 12:57:11 2005
Return-Path: <owner-freebsd-net@FreeBSD.ORG>
X-Original-To: net@FreeBSD.org
Delivered-To: freebsd-net@FreeBSD.ORG
Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125])
	by hub.freebsd.org (Postfix) with ESMTP id 7AC0816A41F;
	Fri, 30 Sep 2005 12:57:11 +0000 (GMT)
	(envelope-from phk@critter.freebsd.dk)
Received: from phk.freebsd.dk (phk.freebsd.dk [130.225.244.222])
	by mx1.FreeBSD.org (Postfix) with ESMTP id 22D2643D48;
	Fri, 30 Sep 2005 12:57:11 +0000 (GMT)
	(envelope-from phk@critter.freebsd.dk)
Received: from critter.freebsd.dk (unknown [192.168.48.2])
	by phk.freebsd.dk (Postfix) with ESMTP id 8593FBC96;
	Fri, 30 Sep 2005 12:57:09 +0000 (UTC)
To: Robert Watson <rwatson@FreeBSD.org>
From: "Poul-Henning Kamp" <phk@phk.freebsd.dk>
In-Reply-To: Your message of "Fri, 30 Sep 2005 13:47:36 BST."
	<20050930134526.R71864@fledge.watson.org> 
Date: Fri, 30 Sep 2005 14:57:08 +0200
Message-ID: <32249.1128085028@critter.freebsd.dk>
Sender: phk@critter.freebsd.dk
Cc: arch@FreeBSD.org, Gleb Smirnoff <glebius@FreeBSD.org>, net@FreeBSD.org
Subject: Re: [REVIEW/TEST] polling(4) changes 
X-BeenThere: freebsd-net@freebsd.org
X-Mailman-Version: 2.1.5
Precedence: list
List-Id: Networking and TCP/IP with FreeBSD <freebsd-net.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-net>,
	<mailto:freebsd-net-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/freebsd-net>
List-Post: <mailto:freebsd-net@freebsd.org>
List-Help: <mailto:freebsd-net-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-net>,
	<mailto:freebsd-net-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Fri, 30 Sep 2005 12:57:11 -0000

In message <20050930134526.R71864@fledge.watson.org>, Robert Watson writes:
>On Fri, 30 Sep 2005, Poul-Henning Kamp wrote:
>
>> I still think we should stop having this network-centric view of polling 
>> and implement _real_ *device* polling, so that other device types can 
>> use it as well.
>
>While I agree that we should offer polling to non-network device drivers 
>also, I think it's worth observing that the network awareness of our 
>current polling code has some interesting advantages.  [...]

None of which could not be implemented on top of a general polling
facility, and some of which makes polling unusable with high end
networking hardware like a 8x1Gige card where all ports are handled
by the same interrupt.

Anyway, I just wanted to make the point, not start a long discussion.

-- 
Poul-Henning Kamp       | UNIX since Zilog Zeus 3.20
phk@FreeBSD.ORG         | TCP/IP since RFC 956
FreeBSD committer       | BSD since 4.3-tahoe    
Never attribute to malice what can adequately be explained by incompetence.