From owner-freebsd-fs@FreeBSD.ORG Fri May 26 11:41:10 2006 Return-Path: X-Original-To: freebsd-fs@freebsd.org Delivered-To: freebsd-fs@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 4879B16A457; Fri, 26 May 2006 11:41:10 +0000 (UTC) (envelope-from rwatson@FreeBSD.org) Received: from cyrus.watson.org (cyrus.watson.org [209.31.154.42]) by mx1.FreeBSD.org (Postfix) with ESMTP id EF59D43D60; Fri, 26 May 2006 11:41:09 +0000 (GMT) (envelope-from rwatson@FreeBSD.org) Received: from fledge.watson.org (fledge.watson.org [209.31.154.41]) by cyrus.watson.org (Postfix) with ESMTP id 98C9746D1D; Fri, 26 May 2006 07:41:09 -0400 (EDT) Date: Fri, 26 May 2006 12:41:09 +0100 (BST) From: Robert Watson X-X-Sender: robert@fledge.watson.org To: etalk etalk In-Reply-To: Message-ID: <20060526123847.D18347@fledge.watson.org> References: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII; format=flowed Cc: freebsd-fs@freebsd.org, freebsd-fs-request@freebsd.org, freebsd-performance-request@freebsd.org Subject: Re: about ufs filesystem io performance! X-BeenThere: freebsd-fs@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Filesystems List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 26 May 2006 11:41:10 -0000 On Fri, 26 May 2006, etalk etalk wrote: > b. Is Bsd6.0 make improvement in file system io performance when comparing > to Bsd5.3? I can't speak to (a), but I can say that FreeBSD 6.x is often significantly faster for file system performance, especially on SMP. This is because the Giant lock no longer covers the UFS file system. My recommendation would be to use FreeBSD 6.1 in preference to earlier 5.x or 6.x releases. While it is a recent release, it is also very promising, as it reflects a significant refinement on the 6.0 release, with important stability and performance improvments in many areas. It is the right baseline to measure and optimize from. Robert N M Watson