From owner-freebsd-arch@FreeBSD.ORG  Sun Jan 18 20:31:34 2009
Return-Path: <owner-freebsd-arch@FreeBSD.ORG>
Delivered-To: freebsd-arch@freebsd.org
Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34])
	by hub.freebsd.org (Postfix) with ESMTP id 565C81065670;
	Sun, 18 Jan 2009 20:31:34 +0000 (UTC)
	(envelope-from bright@elvis.mu.org)
Received: from elvis.mu.org (elvis.mu.org [192.203.228.196])
	by mx1.freebsd.org (Postfix) with ESMTP id 45A888FC0A;
	Sun, 18 Jan 2009 20:31:34 +0000 (UTC)
	(envelope-from bright@elvis.mu.org)
Received: by elvis.mu.org (Postfix, from userid 1192)
	id 221951A3C3E; Sun, 18 Jan 2009 12:31:34 -0800 (PST)
Date: Sun, 18 Jan 2009 12:31:34 -0800
From: Alfred Perlstein <alfred@freebsd.org>
To: Kris Kennaway <kris@FreeBSD.org>
Message-ID: <20090118203134.GF60686@elvis.mu.org>
References: <20090118082145.GA18067@x2.osted.lan> <86iqocstjm.fsf@ds4.des.no>
	<49733419.5000407@FreeBSD.org>
Mime-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline
In-Reply-To: <49733419.5000407@FreeBSD.org>
User-Agent: Mutt/1.4.2.3i
Cc: Dag-Erling Sm??rgrav <des@des.no>, freebsd-arch@freebsd.org
Subject: Re: stress2 is now in projects
X-BeenThere: freebsd-arch@freebsd.org
X-Mailman-Version: 2.1.5
Precedence: list
List-Id: Discussion related to FreeBSD architecture <freebsd-arch.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-arch>,
	<mailto:freebsd-arch-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/freebsd-arch>
List-Post: <mailto:freebsd-arch@freebsd.org>
List-Help: <mailto:freebsd-arch-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-arch>,
	<mailto:freebsd-arch-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Sun, 18 Jan 2009 20:31:34 -0000

* Kris Kennaway <kris@FreeBSD.org> [090118 05:52] wrote:
> Dag-Erling Sm??rgrav wrote:
> >Peter Holm <pho@freebsd.org> writes:
> >>The key functionality of this test suite is that it runs a random
> >>number of test programs for a random period, in random incarnations
> >>and in random sequence.
> >
> >In other words, it's non-deterministic and non-reproducable.
> >
> >You should at the very least allow the user to specify the random seed.
> >
> >DES
> 
> I doubt this will help at all since the test suite is (by design) 
> massively parallel, so you're at the mercy of small timing changes.

If the start and stop times of the scripts were recorded one could
synch with the original potentially between runs, at least on the
same hardware it ran.

Basically, replay the suite based on time instead of random.

-Alfred