From owner-freebsd-threads@FreeBSD.ORG  Thu Feb 19 00:56:48 2004
Return-Path: <owner-freebsd-threads@FreeBSD.ORG>
Delivered-To: freebsd-threads@freebsd.org
Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125])
	by hub.freebsd.org (Postfix) with ESMTP id CFD3C16A4CE
	for <freebsd-threads@freebsd.org>;
	Thu, 19 Feb 2004 00:56:48 -0800 (PST)
Received: from exchhz01.viatech.com.cn (ip-40-162-97-218.anlai.com
	[218.97.162.40])
	by mx1.FreeBSD.org (Postfix) with ESMTP id 9753643D1F
	for <freebsd-threads@freebsd.org>;
	Thu, 19 Feb 2004 00:55:40 -0800 (PST)
	(envelope-from davidxu@freebsd.org)
Received: from freebsd.org (DAVIDWNT [10.4.1.99]) by exchhz01.viatech.com.cn
	with SMTP (Microsoft Exchange Internet Mail Service Version 5.5.2650.21)
	id FHN0J507; Thu, 19 Feb 2004 16:52:20 +0800
Message-ID: <4034793E.8040105@freebsd.org>
Date: Thu, 19 Feb 2004 16:52:14 +0800
From: David Xu <davidxu@freebsd.org>
User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.0; en-US;
	rv:1.5b) Gecko/20030723 Thunderbird/0.1
X-Accept-Language: en-us, en
MIME-Version: 1.0
To: Mike Makonnen <mtm@identd.net>
References: <20040219062850.GC1074@mobile.acs-et.com>
In-Reply-To: <20040219062850.GC1074@mobile.acs-et.com>
Content-Type: text/plain; charset=us-ascii; format=flowed
Content-Transfer-Encoding: 7bit
cc: freebsd-threads@freebsd.org
Subject: Re: libthr patch
X-BeenThere: freebsd-threads@freebsd.org
X-Mailman-Version: 2.1.1
Precedence: list
List-Id: Threading on FreeBSD <freebsd-threads.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-threads>,
	<mailto:freebsd-threads-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/freebsd-threads>
List-Post: <mailto:freebsd-threads@freebsd.org>
List-Help: <mailto:freebsd-threads-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-threads>,
	<mailto:freebsd-threads-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Thu, 19 Feb 2004 08:56:48 -0000

Yes, I think sigwait is too slow for synchronizing, it is better to use 
dedicated function,
this looks fine for me.

David Xu

Mike Makonnen wrote:

>Hello folks,
>
>The following patch stops libthr from using signals for syncronizng threads.
>I've tested it localy and have seen *really large* performance
>improvements in heavy thread/mutex contention situations. I'm interested
>in hearing your experiences.
> 
>P.S. - The patch to the kernel applies two new syscalls so you must
>       regenerate some files *after* applying the patch. Do the following:
>        cd /usr/src/sys/kern
>        sh makesyscalls.sh syscalls.master
>        cd /usr/src/sys/compat/freebsd32
>        sh ../../kern/makesyscalls.sh syscalls.master syscalls.conf
> 
>      and then build your kernel in the usual way.
> 
>Cheers.
>  
>