From owner-freebsd-net@FreeBSD.ORG Mon Jan 5 07:09:44 2009 Return-Path: Delivered-To: freebsd-net@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 342B71065672 for ; Mon, 5 Jan 2009 07:09:44 +0000 (UTC) (envelope-from julian@elischer.org) Received: from outO.internet-mail-service.net (outo.internet-mail-service.net [216.240.47.238]) by mx1.freebsd.org (Postfix) with ESMTP id 1A14E8FC0C for ; Mon, 5 Jan 2009 07:09:44 +0000 (UTC) (envelope-from julian@elischer.org) Received: from idiom.com (mx0.idiom.com [216.240.32.160]) by out.internet-mail-service.net (Postfix) with ESMTP id 6B2E0234B for ; Sun, 4 Jan 2009 23:09:44 -0800 (PST) X-Client-Authorized: MaGic Cook1e Received: from julian-mac.elischer.org (home.elischer.org [216.240.48.38]) by idiom.com (Postfix) with ESMTP id 5BADD2D6023 for ; Sun, 4 Jan 2009 23:09:43 -0800 (PST) Message-ID: <4961B236.8040607@elischer.org> Date: Sun, 04 Jan 2009 23:09:42 -0800 From: Julian Elischer User-Agent: Thunderbird 2.0.0.18 (Macintosh/20081105) MIME-Version: 1.0 To: FreeBSD Net Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Subject: Request for assitance: VIMAGE performance testing X-BeenThere: freebsd-net@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Networking and TCP/IP with FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 05 Jan 2009 07:09:44 -0000 The current state of vimage in -current is such that we can do some performance testing. Unfortunatly I don't have a test plan in place.. The aim is to run some tests on systems with VIMAGE_GLOBALS defined and not defined and see if there are any detectable differences. Firstly I have done some simple tests myself (e.g. scps, pings, ftps) but it would be very helpful if people coudl compile up an alternative kernel with VIMAGE_GLOBALS defined and see if their everyday workloads show any noticeable differences. nothing special.. just time a few things you often do that may be special to you and are network intensive, and then switch to the other kernel and try it again. Then put the results in ministat (saying whether bigger is better or worse) Ok do it several times for statistical purposes, reply to me (and the list) and let us know if you are seeing differences anywhere.. regards.. Julian (p.s. I will put numbers up too when I get some more)