From owner-freebsd-hackers@FreeBSD.ORG Fri Sep 26 09:20:16 2008 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 178A61065688 for ; Fri, 26 Sep 2008 09:20:16 +0000 (UTC) (envelope-from des@des.no) Received: from tim.des.no (tim.des.no [194.63.250.121]) by mx1.freebsd.org (Postfix) with ESMTP id CC2CF8FC1D for ; Fri, 26 Sep 2008 09:20:15 +0000 (UTC) (envelope-from des@des.no) Received: from ds4.des.no (des.no [84.49.246.2]) by smtp.des.no (Postfix) with ESMTP id C6504208C; Fri, 26 Sep 2008 11:20:14 +0200 (CEST) Received: by ds4.des.no (Postfix, from userid 1001) id A3A4F8444E; Fri, 26 Sep 2008 11:20:14 +0200 (CEST) From: =?utf-8?Q?Dag-Erling_Sm=C3=B8rgrav?= To: Jeff Wheelhouse References: <8185F68B-C443-4891-BEC2-5E3D453DDC93@wheelhouse.org> <86ljxgs2h0.fsf@ds4.des.no> <05B718C6-BBC9-4B78-B580-4E250199DDCF@wheelhouse.org> Date: Fri, 26 Sep 2008 11:20:14 +0200 In-Reply-To: <05B718C6-BBC9-4B78-B580-4E250199DDCF@wheelhouse.org> (Jeff Wheelhouse's message of "Thu, 25 Sep 2008 14:02:26 -0400") Message-ID: <868wtf8drl.fsf@ds4.des.no> User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/23.0.60 (berkeley-unix) MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable Cc: freebsd-hackers@freebsd.org Subject: Re: Major SMP problems with lstat/namei 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: Fri, 26 Sep 2008 09:20:16 -0000 Jeff Wheelhouse writes: > http://software.wheelhouse.org/rptest.tar.bz2 Thanks. I get similar results on head; vfs.lookup_shared actually seems to *reduce* performance by about 10% - 20%. I ran the test on both UFS and ZFS; there is no significant difference. DES --=20 Dag-Erling Sm=C3=B8rgrav - des@des.no