From owner-freebsd-performance@FreeBSD.ORG Mon May 15 16:17:31 2006 Return-Path: X-Original-To: freebsd-performance@freebsd.org Delivered-To: freebsd-performance@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 05BD416A619 for ; Mon, 15 May 2006 16:17:31 +0000 (UTC) (envelope-from mark@gaiahost.coop) Received: from biodiesel.gaiahost.coop (biodiesel.gaiahost.coop [64.95.78.120]) by mx1.FreeBSD.org (Postfix) with ESMTP id A85B043D7C for ; Mon, 15 May 2006 16:17:30 +0000 (GMT) (envelope-from mark@gaiahost.coop) Received: from gaiahost.coop (host-64-65-195-19.spr.choiceone.net [::ffff:64.65.195.19]) (AUTH: LOGIN mark@hubcapconsulting.com) by biodiesel.gaiahost.coop with esmtp; Mon, 15 May 2006 12:17:30 -0400 id 00200083.4468A99A.00006202 Received: by gaiahost.coop (sSMTP sendmail emulation); Mon, 15 May 2006 12:17:39 -0400 Date: Mon, 15 May 2006 12:17:39 -0400 From: Mark Bucciarelli To: freebsd-performance@freebsd.org Message-ID: <20060515161739.GD1404@rabbit> Mail-Followup-To: freebsd-performance@freebsd.org References: <20060506150622.C17611@fledge.watson.org> <200605091818.12676.hadara@bsd.ee> <4460D2CA.5090808@elischer.org> <200605100418.54475.hadara@bsd.ee> <4461441E.60304@samsco.org> <4464D242.4050908@sbcglobal.net> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Content-Disposition: inline In-Reply-To: <4464D242.4050908@sbcglobal.net> User-Agent: Mutt/1.4.2.1i Subject: Re: Fine-grained locking for POSIX local sockets (UNIX domain sockets ) X-BeenThere: freebsd-performance@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Performance/tuning List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 15 May 2006 16:17:31 -0000 On Fri, May 12, 2006 at 11:21:54AM -0700, Jin Guojun wrote: > I simply replaced gettimeofday() syscall with a super simple > user space code, for testing with no time accuracy, in libc > (libc.so.6.test, which is mapped for mysqld and mysql via libmap -- > see details at the end), Stronger argument if your experiment re-#defines those calls in MySql source to do nothing? It would remove all doubt that the gettimeofday() issue is a red herring. m