From owner-freebsd-hackers@FreeBSD.ORG Thu Apr 30 19:32:01 2009 Return-Path: Delivered-To: freebsd-hackers@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 9F39F106566B for ; Thu, 30 Apr 2009 19:32:01 +0000 (UTC) (envelope-from rwatson@FreeBSD.org) Received: from cyrus.watson.org (cyrus.watson.org [65.122.17.42]) by mx1.freebsd.org (Postfix) with ESMTP id 29B478FC14 for ; Thu, 30 Apr 2009 19:32:01 +0000 (UTC) (envelope-from rwatson@FreeBSD.org) Received: from fledge.watson.org (fledge.watson.org [65.122.17.41]) by cyrus.watson.org (Postfix) with ESMTPS id C1EFF46B0C; Thu, 30 Apr 2009 15:32:00 -0400 (EDT) Date: Thu, 30 Apr 2009 20:32:00 +0100 (BST) From: Robert Watson X-X-Sender: robert@fledge.watson.org To: Oliver Pinter In-Reply-To: <6101e8c40904300750i3e86fc0cnef09b0d4533627f7@mail.gmail.com> Message-ID: References: <6101e8c40904300750i3e86fc0cnef09b0d4533627f7@mail.gmail.com> User-Agent: Alpine 2.00 (BSF 1167 2008-08-23) MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII; format=flowed Cc: freebsd-hackers@freebsd.org Subject: Re: NetBSD 5.0 statistics X-BeenThere: freebsd-hackers@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Technical Discussions relating to FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 30 Apr 2009 19:32:02 -0000 On Thu, 30 Apr 2009, Oliver Pinter wrote: > Is the FreeBSD's FS management so slow? > > http://www.netbsd.org/~ad/50/img15.html > > Or so big is the difference between the two cpu scheduler? Also, there's a known and serious performance regression in CAM relating to tgged queueing, and the generic disk sort routine, introduced 7.1, which will be fixed in 7.2. I can't speak more generally to the benchmarks -- we'll need to run them in a controlled environment and see if we can reproduce the results. Robert N M Watson Computer Laboratory University of Cambridge