From owner-freebsd-amd64@FreeBSD.ORG Sat Aug 6 23:41:04 2005 Return-Path: X-Original-To: freebsd-amd64@freebsd.org Delivered-To: freebsd-amd64@freebsd.org Received: from [127.0.0.1] (localhost [127.0.0.1]) by hub.freebsd.org (Postfix) with ESMTP id CF4FA16A41F; Sat, 6 Aug 2005 23:41:03 +0000 (GMT) (envelope-from davidxu@freebsd.org) Message-ID: <42F54A8E.8080704@freebsd.org> Date: Sun, 07 Aug 2005 07:41:02 +0800 From: David Xu User-Agent: Mozilla/5.0 (X11; U; FreeBSD amd64; en-US; rv:1.7.10) Gecko/20050806 X-Accept-Language: en-us, en MIME-Version: 1.0 To: Peter Wemm References: <3.0.1.32.20050728080526.00aa4098@pop.redshift.com> <3.0.1.32.20050728092338.01207628@pop.redshift.com> <20050728163602.GC64153@troutmask.apl.washington.edu> <200507281057.43655.peter@wemm.org> In-Reply-To: <200507281057.43655.peter@wemm.org> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Cc: freebsd-amd64@freebsd.org Subject: Re: Benchmarks: AMD64 vs i386 on Dual 246 Opteron X-BeenThere: freebsd-amd64@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Porting FreeBSD to the AMD64 platform List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 06 Aug 2005 23:41:04 -0000 Peter Wemm wrote: >Mysql could also easily be affected by inefficiencies in the amd64 >pthread libraries too. > > > libthr on -CURRENT is very similar with Linux NPTL, think of NPTL's throughput, the inefficiencies might be in our kernel. Also the bottleneck in userland might be malloc which does belongs to thread library, Linux has ptmalloc which is thread friendly. David Xu