From owner-freebsd-stable  Mon Feb  3 20:37:34 2003
Delivered-To: freebsd-stable@freebsd.org
Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125])
	by hub.freebsd.org (Postfix) with ESMTP id 77E7D37B401
	for <stable@FreeBSD.ORG>; Mon,  3 Feb 2003 20:37:33 -0800 (PST)
Received: from HAL9000.homeunix.com (12-233-57-224.client.attbi.com [12.233.57.224])
	by mx1.FreeBSD.org (Postfix) with ESMTP id D7A0C43F79
	for <stable@FreeBSD.ORG>; Mon,  3 Feb 2003 20:37:32 -0800 (PST)
	(envelope-from dschultz@uclink.Berkeley.EDU)
Received: from HAL9000.homeunix.com (localhost [127.0.0.1])
	by HAL9000.homeunix.com (8.12.6/8.12.5) with ESMTP id h144bWZh004559;
	Mon, 3 Feb 2003 20:37:32 -0800 (PST)
	(envelope-from dschultz@uclink.Berkeley.EDU)
Received: (from das@localhost)
	by HAL9000.homeunix.com (8.12.6/8.12.5/Submit) id h144bQEc004558;
	Mon, 3 Feb 2003 20:37:26 -0800 (PST)
	(envelope-from dschultz@uclink.Berkeley.EDU)
Date: Mon, 3 Feb 2003 20:37:26 -0800
From: David Schultz <dschultz@uclink.Berkeley.EDU>
To: Ryan Dooley <ryan@third-man.com>
Cc: stable@FreeBSD.ORG
Subject: Re: recommendations on the newfs of a 1.0TB fs...
Message-ID: <20030204043726.GA4323@HAL9000.homeunix.com>
Mail-Followup-To: Ryan Dooley <ryan@third-man.com>,
	stable@FreeBSD.ORG
References: <20030203194828.GA55143@elvis.mu.org>
Mime-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline
In-Reply-To: <20030203194828.GA55143@elvis.mu.org>
Sender: owner-freebsd-stable@FreeBSD.ORG
Precedence: bulk
List-ID: <freebsd-stable.FreeBSD.ORG>
List-Archive: <http://docs.freebsd.org/mail/> (Web Archive)
List-Help: <mailto:majordomo@FreeBSD.ORG?subject=help> (List Instructions)
List-Subscribe: <mailto:majordomo@FreeBSD.ORG?subject=subscribe%20freebsd-stable>
List-Unsubscribe: <mailto:majordomo@FreeBSD.ORG?subject=unsubscribe%20freebsd-stable>
X-Loop: FreeBSD.ORG

Thus spake Ryan Dooley <ryan@third-man.com>:
> I'm looking for recommendations on the newfs options for a 1.0TB file system
> for say /home (it's a fileserver for 52000+ accounts that range from having
> 4k to 40GB in their directories.)
> 
> When I initally created the file system, the options I set are: block size of
> 65536 and a fragsize of 8192.  

IIRC, block sizes greater than 16384 can cause significant buffer
cache fragmentation, which can reduce I/O performance.  Moreover,
blocks that large will waste space and I/O bandwidth unless most
of the files on the disk are very large.  A smaller setting,
e.g. the default, is probably more appropriate.

To Unsubscribe: send mail to majordomo@FreeBSD.org
with "unsubscribe freebsd-stable" in the body of the message