From owner-cvs-all Tue Nov 27 11:22: 5 2001 Delivered-To: cvs-all@freebsd.org Received: from apollo.backplane.com (apollo.backplane.com [216.240.41.2]) by hub.freebsd.org (Postfix) with ESMTP id F0DD237B417; Tue, 27 Nov 2001 11:21:52 -0800 (PST) Received: (from dillon@localhost) by apollo.backplane.com (8.11.6/8.9.1) id fARJLMf93880; Tue, 27 Nov 2001 11:21:22 -0800 (PST) (envelope-from dillon) Date: Tue, 27 Nov 2001 11:21:22 -0800 (PST) From: Matthew Dillon Message-Id: <200111271921.fARJLMf93880@apollo.backplane.com> To: Sheldon Hearn Cc: cvs-committers@FreeBSD.ORG, cvs-all@FreeBSD.ORG Subject: Re: cvs commit: src/sbin/newfs newfs.8 References: <84231.1006880867@axl.seasidesoftware.co.za> Sender: owner-cvs-all@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.ORG : : : :On Tue, 27 Nov 2001 09:01:17 PST, Sheldon Hearn wrote: : :| sbin/newfs newfs.8 :| Log: :| Correct the example introduced in rev 1.29, which suggested a block:frag :| size ratio other than 8:1. Currently, we only recommend an 8:1 :| ratio, because the impact of others ratios has not been adequately :| investigated. : :I'm still not sure that the following text in the manual page is :accurate: : : These values tend to produce better performance than the defaults : for file systems larger than about 5 gigabytes. : :So far, my Postmark benchmarks on filesystems as small as 128M all show :performance improvements using 16k:2k, given an average file size of 2k :or more. It seems to me that the decision on what block:frag sizes to :use has much more to do with file sizes than with filesystem sizes. : :Matt, do you have any comments on the manual page text quoted above? : :Ciao, :Sheldon. I think the manual page is no longer accurate. It was just guesswork on my part. Go ahead and fix it. -Matt Matthew Dillon To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe cvs-all" in the body of the message