From owner-freebsd-current@FreeBSD.ORG  Sat Oct 29 07:48:08 2005
Return-Path: <owner-freebsd-current@FreeBSD.ORG>
X-Original-To: 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 B493716A41F;
	Sat, 29 Oct 2005 07:48:08 +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 5596243D46;
	Sat, 29 Oct 2005 07:48:08 +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 249E6BC50;
	Sat, 29 Oct 2005 07:48:06 +0000 (UTC)
To: Maxim.Sobolev@portaone.com
From: "Poul-Henning Kamp" <phk@phk.freebsd.dk>
In-Reply-To: Your message of "Sat, 29 Oct 2005 00:29:10 PDT."
	<436324C6.5040107@portaone.com> 
Date: Sat, 29 Oct 2005 09:48:06 +0200
Message-ID: <37735.1130572086@critter.freebsd.dk>
Sender: phk@critter.freebsd.dk
Cc: Pertti Kosunen <pertti.kosunen@pp.nic.fi>,
	Robert Watson <rwatson@FreeBSD.ORG>, David Xu <davidxu@FreeBSD.ORG>,
	"Yuriy N. Shkandybin" <jura@networks.ru>, current@FreeBSD.ORG
Subject: Re: Timers and timing, was: MySQL Performance 6.0rc1 
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: Sat, 29 Oct 2005 07:48:08 -0000

In message <436324C6.5040107@portaone.com>, Maxim Sobolev writes:

>> I'm not sure I see much difference between a shared library and this
>> solution, but I'm equally sure we'd love to se a prototype before
>> we judge it :-)
>
>Difference is that you won't have additional problems with userland and 
>kernel versions mismatch and don't need any additional complexity 
>associated with versioning/fallback logic.

So why don't we implement all the syscalls this way if we have to go
down that route anyway ?

-- 
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.