From owner-freebsd-current@FreeBSD.ORG  Sun May  7 23:22:11 2006
Return-Path: <owner-freebsd-current@FreeBSD.ORG>
X-Original-To: current@freebsd.org
Delivered-To: freebsd-current@FreeBSD.ORG
Received: from localhost.my.domain (localhost [127.0.0.1])
	by hub.freebsd.org (Postfix) with ESMTP id BAB7F16A403;
	Sun,  7 May 2006 23:22:10 +0000 (UTC)
	(envelope-from davidxu@freebsd.org)
From: David Xu <davidxu@freebsd.org>
To: freebsd-performance@freebsd.org
Date: Mon, 8 May 2006 07:22:06 +0800
User-Agent: KMail/1.8.2
References: <20060506150622.C17611@fledge.watson.org>
	<20060507214153.GA5275@xor.obsecurity.org>
	<20060507230430.GA6872@xor.obsecurity.org>
In-Reply-To: <20060507230430.GA6872@xor.obsecurity.org>
MIME-Version: 1.0
Content-Type: text/plain;
  charset="gb2312"
Content-Transfer-Encoding: 7bit
Content-Disposition: inline
Message-Id: <200605080722.06435.davidxu@freebsd.org>
Cc: Robert Watson <rwatson@freebsd.org>, performance@freebsd.org,
	current@freebsd.org, Kris Kennaway <kris@obsecurity.org>
Subject: Re: Fine-grained locking for POSIX local sockets (UNIX domain
	sockets)
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: Sun, 07 May 2006 23:22:11 -0000

On Monday 08 May 2006 07:04, Kris Kennaway wrote:

> i.e. apparently not a large difference, but still a large proportion
> of cases where multiple CPUs are woken at once on the same chain.
>
> Kris
This becauses there is no sleepable mutex available, so I had to use
msleep and wakeup, this is suboptimal, I may put flag MTX_QUIET there
to let WITNESS shut up.