From owner-freebsd-arch Mon Oct 15 15:30:46 2001 Delivered-To: freebsd-arch@freebsd.org Received: from earth.backplane.com (earth-nat-cw.backplane.com [208.161.114.67]) by hub.freebsd.org (Postfix) with ESMTP id 6D93137B40A; Mon, 15 Oct 2001 15:30:40 -0700 (PDT) Received: (from dillon@localhost) by earth.backplane.com (8.11.6/8.11.2) id f9FMUUo57520; Mon, 15 Oct 2001 15:30:30 -0700 (PDT) (envelope-from dillon) Date: Mon, 15 Oct 2001 15:30:30 -0700 (PDT) From: Matt Dillon Message-Id: <200110152230.f9FMUUo57520@earth.backplane.com> To: Doug Barton Cc: Matthew Jacob , Peter Wemm , cvs-committers@FreeBSD.ORG, freebsd-arch@FreeBSD.ORG Subject: Re: cvs commit: src/sbin/newfs newfs.8 newfs.c References: <20011015124636.I29828-100000@wonky.feral.com> <200110152126.f9FLQE956721@earth.backplane.com> <3BCB629A.ACF72517@yahoo-inc.com> Sender: owner-freebsd-arch@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.ORG : :This is a multi-part message in MIME format. :--------------452C775F06A8B39928947702 :Content-Type: text/plain; charset=us-ascii :Content-Transfer-Encoding: 7bit : : What do you guys think of the attached patch? If this is such an :important issue, it should be documented. I for one am glad I saw this :discussion, because I'm looking at creating a custom file system for :about 300,000 files that are 400k or smaller. I'm looking to improve :file I/O performance, so I thought a smaller frag size might get things :packed in tighter... Good idea. -Matt :+++ newfs.8 2001/10/15 22:21:39 :@@ -111,6 +111,9 @@ : .It Fl b Ar block-size : The block size of the file system, in bytes. It must be a power of 2. The : default size is 8192 bytes, and the smallest allowable size is 4096 bytes. :+The optimal block:fragment ratio is 8:1. :+Other ratios are possible, but are not recommended, and may produce :+unpredictable results. To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-arch" in the body of the message