From owner-freebsd-stable@FreeBSD.ORG  Wed Dec 26 17:40:58 2007
Return-Path: <owner-freebsd-stable@FreeBSD.ORG>
Delivered-To: stable@freebsd.org
Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34])
	by hub.freebsd.org (Postfix) with ESMTP id 2752E16A418
	for <stable@freebsd.org>; Wed, 26 Dec 2007 17:40:58 +0000 (UTC)
	(envelope-from mike@sentex.net)
Received: from smarthost2.sentex.ca (smarthost2.sentex.ca [205.211.164.50])
	by mx1.freebsd.org (Postfix) with ESMTP id E64F013C442
	for <stable@freebsd.org>; Wed, 26 Dec 2007 17:40:57 +0000 (UTC)
	(envelope-from mike@sentex.net)
Received: from lava.sentex.ca (pyroxene.sentex.ca [199.212.134.18])
	by smarthost2.sentex.ca (8.14.1/8.13.8) with ESMTP id lBQHeuGZ020815;
	Wed, 26 Dec 2007 12:40:56 -0500 (EST) (envelope-from mike@sentex.net)
Received: from mdt-xp.sentex.net (simeon.sentex.ca [192.168.43.27])
	by lava.sentex.ca (8.13.8/8.13.3) with ESMTP id lBQHetRB061995
	(version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NO);
	Wed, 26 Dec 2007 12:40:55 -0500 (EST) (envelope-from mike@sentex.net)
Message-Id: <200712261740.lBQHetRB061995@lava.sentex.ca>
X-Mailer: QUALCOMM Windows Eudora Version 7.1.0.9
Date: Wed, 26 Dec 2007 12:38:52 -0500
To: Scott Long <scottl@samsco.org>
From: Mike Tancsa <mike@sentex.net>
In-Reply-To: <477252E4.4070707@samsco.org>
References: <200712220531.WAA09277@lariat.net> <476FBED0.2080400@samsco.org>
	<200712241549.IAA19650@lariat.net> <476FDA10.4060107@samsco.org>
	<200712241653.JAA20845@lariat.net> <476FE868.8080704@samsco.org>
	<200712241723.lBOHNLtt049769@lava.sentex.ca>
	<477252E4.4070707@samsco.org>
Mime-Version: 1.0
Content-Type: text/plain; charset="us-ascii"; format=flowed
Cc: stable@freebsd.org
Subject: Re: SMP on FreeBSD 6.x and 7.0: Worth doing?
X-BeenThere: freebsd-stable@freebsd.org
X-Mailman-Version: 2.1.5
Precedence: list
List-Id: Production branch of FreeBSD source code <freebsd-stable.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-stable>, 
	<mailto:freebsd-stable-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/freebsd-stable>
List-Post: <mailto:freebsd-stable@freebsd.org>
List-Help: <mailto:freebsd-stable-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-stable>,
	<mailto:freebsd-stable-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Wed, 26 Dec 2007 17:40:58 -0000

At 08:11 AM 12/26/2007, Scott Long wrote:
>>         How does one know if the vfs.ufs.dirhash_maxmem is set too 
>> high and are exhausting KVA ?
>
>Panics, freezes, failure to exec new programs, failure to create pipes, etc.

Is there anyway to know ahead of time one is getting close to the 
stage where all those "bad things" start to happen ?

         ---Mike