From owner-freebsd-current@FreeBSD.ORG  Mon Oct 12 01:48:48 2009
Return-Path: <owner-freebsd-current@FreeBSD.ORG>
Delivered-To: freebsd-current@freebsd.org
Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34])
	by hub.freebsd.org (Postfix) with ESMTP id ADC07106568B
	for <freebsd-current@freebsd.org>; Mon, 12 Oct 2009 01:48:48 +0000 (UTC)
	(envelope-from sgk@troutmask.apl.washington.edu)
Received: from troutmask.apl.washington.edu (troutmask.apl.washington.edu
	[128.208.78.105])
	by mx1.freebsd.org (Postfix) with ESMTP id 94EFD8FC1E
	for <freebsd-current@freebsd.org>; Mon, 12 Oct 2009 01:48:48 +0000 (UTC)
Received: from troutmask.apl.washington.edu (localhost.apl.washington.edu
	[127.0.0.1])
	by troutmask.apl.washington.edu (8.14.3/8.14.3) with ESMTP id
	n9C1mkrO038533; Sun, 11 Oct 2009 18:48:46 -0700 (PDT)
	(envelope-from sgk@troutmask.apl.washington.edu)
Received: (from sgk@localhost)
	by troutmask.apl.washington.edu (8.14.3/8.14.3/Submit) id
	n9C1mkg7038532; Sun, 11 Oct 2009 18:48:46 -0700 (PDT)
	(envelope-from sgk)
Date: Sun, 11 Oct 2009 18:48:46 -0700
From: Steve Kargl <sgk@troutmask.apl.washington.edu>
To: Larry Rosenman <ler@lerctr.org>
Message-ID: <20091012014846.GB38325@troutmask.apl.washington.edu>
References: <6729ad0409e449f8dbda69ecd8feb618.squirrel@webmail.lerctr.org>
Mime-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline
In-Reply-To: <6729ad0409e449f8dbda69ecd8feb618.squirrel@webmail.lerctr.org>
User-Agent: Mutt/1.4.2.3i
Cc: freebsd-current@freebsd.org
Subject: Re: Scheduler weirdness
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: Mon, 12 Oct 2009 01:48:48 -0000

On Sun, Oct 11, 2009 at 05:59:52PM -0500, Larry Rosenman wrote:
> 
> Ok, running RELENG_8 from Friday (10/9/2009).
> 
> If I have 4 Folding-at-home processes running (they nice themselves) the
> system is slow as a dog.
> 
> If I stop them, it's speedy.
> 
> This is running SCHED_ULE
> 
> is this expected?
> 
> What can I do to help?
> 

How many cpus are available on your system?  If you're in an
over-commit situation with numerical intensive applications,
you may find 4BSD to be a better option.

-- 
Steve