From mboxrd@z Thu Jan 1 00:00:00 1970 From: Laurent Vivier Subject: Re: [Ext2-devel] Re: [RFC][PATCH 0/2]Extend ext3 filesystem limit from 8TB to 16TB Date: Thu, 13 Apr 2006 17:26:39 +0200 Message-ID: <1144941999.2914.1.camel@openx2.frec.bull.fr> References: <20060325223358sho@rifu.tnes.nec.co.jp> <1143485147.3970.23.camel@dyn9047017067.beaverton.ibm.com> <20060327131049.2c6a5413.akpm@osdl.org> <20060327225847.GC3756@localhost.localdomain> <1143530126.11560.6.camel@openx2.frec.bull.fr> <1143568905.3935.13.camel@dyn9047017067.beaverton.ibm.com> <1143623605.5046.11.camel@openx2.frec.bull.fr> <1143682730.4045.145.camel@dyn9047017067.beaverton.ibm.com> <20060329175446.67149f32.akpm@osdl.org> <1144660270.5816.3.camel@openx2.frec.bull.fr> <20060410012431.716d1000.akpm@osdl.org> Mime-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="=-TxvS0rl0C1noIiRDeY9d" Cc: Mingming Cao , Takashi Sato , linux-kernel@vger.kernel.org, ext2-devel , linux-fsdevel@vger.kernel.org Return-path: Received: from ecfrec.frec.bull.fr ([129.183.4.8]:19328 "EHLO ecfrec.frec.bull.fr") by vger.kernel.org with ESMTP id S1750845AbWDMP0x (ORCPT ); Thu, 13 Apr 2006 11:26:53 -0400 To: Andrew Morton In-Reply-To: <20060410012431.716d1000.akpm@osdl.org> Sender: linux-fsdevel-owner@vger.kernel.org List-Id: linux-fsdevel.vger.kernel.org --=-TxvS0rl0C1noIiRDeY9d Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable Le lun 10/04/2006 =C3=A0 10:24, Andrew Morton a =C3=A9crit : > Laurent Vivier wrote: > > > > Does the attached patch look like the thing you though about ? >=20 > I guess so. But it'll need a lot of performance testing on big SMP > to work out what the impact is. I made some tests with dbench: IBM x440: 8 CPUs hyperthreaded =3D 16 CPUs (Xeon at 1.4 Ghz) with percpu_counter: Throughput 188.365 MB/sec 16 procs Throughput 226.164 MB/sec 32 procs Throughput 142.913 MB/sec 64 procs with atomic_long_t: Throughput 194.385 MB/sec 16 procs Throughput 237.273 MB/sec 32 procs Throughput 160.751 MB/sec 64 procs Regards, Laurent --=20 Laurent Vivier Bull, Architect of an Open World (TM) http://www.bullopensource.org/ext4 --=-TxvS0rl0C1noIiRDeY9d Content-Type: application/pgp-signature; name=signature.asc Content-Description: Ceci est une partie de message =?ISO-8859-1?Q?num=E9riquement?= =?ISO-8859-1?Q?_sign=E9e=2E?= -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.2.7 (GNU/Linux) iD8DBQBEPm2v9Kffa9pFVzwRAmofAKCu4OhsqN+i5CbHP/40ZUZqGnIyQgCfZDJJ HZvqmeBsfRWbC8n8jz9mOUo= =Hd4R -----END PGP SIGNATURE----- --=-TxvS0rl0C1noIiRDeY9d--