From owner-freebsd-questions@FreeBSD.ORG  Mon May 25 17:09:24 2009
Return-Path: <owner-freebsd-questions@FreeBSD.ORG>
Delivered-To: FreeBSD-Questions@freebsd.org
Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34])
	by hub.freebsd.org (Postfix) with ESMTP id 1D46E106566B
	for <FreeBSD-Questions@freebsd.org>;
	Mon, 25 May 2009 17:09:24 +0000 (UTC)
	(envelope-from wojtek@wojtek.tensor.gdynia.pl)
Received: from wojtek.tensor.gdynia.pl (wojtek.tensor.gdynia.pl
	[IPv6:2001:4070:101:2::1])
	by mx1.freebsd.org (Postfix) with ESMTP id 3462B8FC25
	for <FreeBSD-Questions@freebsd.org>;
	Mon, 25 May 2009 17:09:21 +0000 (UTC)
	(envelope-from wojtek@wojtek.tensor.gdynia.pl)
Received: from wojtek.tensor.gdynia.pl (localhost [IPv6:::1])
	by wojtek.tensor.gdynia.pl (8.14.3/8.14.3) with ESMTP id n4PH9FRf040001;
	Mon, 25 May 2009 19:09:15 +0200 (CEST)
	(envelope-from wojtek@wojtek.tensor.gdynia.pl)
Received: from localhost (wojtek@localhost)
	by wojtek.tensor.gdynia.pl (8.14.3/8.14.3/Submit) with ESMTP id
	n4PH9FXV039998; Mon, 25 May 2009 19:09:15 +0200 (CEST)
	(envelope-from wojtek@wojtek.tensor.gdynia.pl)
Date: Mon, 25 May 2009 19:09:15 +0200 (CEST)
From: Wojciech Puchar <wojtek@wojtek.tensor.gdynia.pl>
To: FreeBSD-Questions@freebsd.org
In-Reply-To: <20090525165618.GB8441@Grumpy.DynDNS.org>
Message-ID: <alpine.BSF.2.00.0905251907460.39949@wojtek.tensor.gdynia.pl>
References: <4A1AA3DC.5020300@network-i.net>
	<01FB8F39BAD0BD49A6D0DA8F7897392956C7@Mercury.galaxy.lan.lcl>
	<139b44430905250937u3410ac24g1f0b9f89a0d51f22@mail.gmail.com>
	<20090525165618.GB8441@Grumpy.DynDNS.org>
User-Agent: Alpine 2.00 (BSF 1167 2008-08-23)
MIME-Version: 1.0
Content-Type: TEXT/PLAIN; charset=US-ASCII; format=flowed
Cc: Howard Jones <howard.jones@network-i.net>,
	Graeme Dargie <arab@tangerine-army.co.uk>,
	Valentin Bud <valentin.bud@gmail.com>
Subject: Re: FreeBSD & Software RAID
X-BeenThere: freebsd-questions@freebsd.org
X-Mailman-Version: 2.1.5
Precedence: list
List-Id: User questions <freebsd-questions.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-questions>, 
	<mailto:freebsd-questions-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/freebsd-questions>
List-Post: <mailto:freebsd-questions@freebsd.org>
List-Help: <mailto:freebsd-questions-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-questions>, 
	<mailto:freebsd-questions-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Mon, 25 May 2009 17:09:24 -0000

>
> I have looked at ZFS recently. Appears to be a memory hog, needs about 1
> GB especially if large file transfers may occur over gigabit ethernet
while it CAN be set up on 256MB machine with a little big flags in 
loader.conf (should be autotuned anyway) - it generally takes as much 
memory as it's available, and LOTS of CPU power.

with similar operations ZFS takes 10-20 TIMES more CPU than UFS and it's 
NOT faster than properly configured UFS. doesn't  make  any sense