From owner-freebsd-arch@FreeBSD.ORG Wed Jul 4 16:46:36 2007 Return-Path: X-Original-To: arch@freebsd.org Delivered-To: freebsd-arch@FreeBSD.ORG Received: from mx1.freebsd.org (mx1.freebsd.org [69.147.83.52]) by hub.freebsd.org (Postfix) with ESMTP id 6C71B16A400; Wed, 4 Jul 2007 16:46:36 +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 C13A913C4E7; Wed, 4 Jul 2007 16:46:35 +0000 (UTC) (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 F413949366; Wed, 4 Jul 2007 12:46:34 -0400 (EDT) Date: Wed, 4 Jul 2007 17:46:34 +0100 (BST) From: Robert Watson X-X-Sender: robert@fledge.watson.org To: Attilio Rao In-Reply-To: <3bbf2fe10707040800p4e003df0p65e2b802f81ec51e@mail.gmail.com> Message-ID: <20070704174511.C67251@fledge.watson.org> References: <20070702230728.E552@10.0.0.1> <20070703181242.T552@10.0.0.1> <20070704105525.GU45894@elvis.mu.org> <20070704124833.W37059@fledge.watson.org> <3bbf2fe10707040800p4e003df0p65e2b802f81ec51e@mail.gmail.com> MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII; format=flowed Cc: arch@freebsd.org, Alfred Perlstein Subject: Re: Fine grain select locking. X-BeenThere: freebsd-arch@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Discussion related to FreeBSD architecture List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 04 Jul 2007 16:46:36 -0000 On Wed, 4 Jul 2007, Attilio Rao wrote: > 2007/7/4, Robert Watson : >> There seem to be two parts of owning a benchmark: >> >> - Establishing baselines over time -- how doe FreeBSD 4.8, 5.5, 6.0, 6.1, >> 6.2, >> 6-STABLE weekly, 7-CURRENT weekly, and maybe a Linux or NetBSD version >> perform for the workload using otherwise identical configuration. >> >> - Measurement and feedback -- identifying bottlenecks, working with >> developers >> to measure the results of specific optimizations, etc, across the life >> cycle >> of the patch. > > Another problem here would be about the hardware availabilty (obviously I'm > speaking about scalability improvements). Until now, tests have been done > mainly on amd64 machines provided by Kris and Jeff, IIRC. Having a wider > range of targets would help a lot in these cases. The FreeBSD Foundation is currently working on updating the Netperf test cluster from dual-cpu HTT boxes to 8-core systems, and from 1gbps to 10gbps ethernet. Hopefully this will improve access to larger multicore systems for developers without local hardware. This project has been "in progress" for a while now, but will wrap up soon. Robert N M Watson Computer Laboratory University of Cambridge