Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1423603AbWJaUYK (ORCPT ); Tue, 31 Oct 2006 15:24:10 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1423605AbWJaUYK (ORCPT ); Tue, 31 Oct 2006 15:24:10 -0500 Received: from mail.parknet.jp ([210.171.160.80]:45064 "EHLO parknet.jp") by vger.kernel.org with ESMTP id S1423602AbWJaUYI (ORCPT ); Tue, 31 Oct 2006 15:24:08 -0500 X-AuthUser: hirofumi@parknet.jp To: "Holden Karau" Cc: "Holden Karau" , "Josef Sipek" , linux-kernel@vger.kernel.org, "akpm\@osdl.org" , linux-fsdevel@vger.kernel.org, "Nick Piggin" , =?iso-8859-1?Q?J=F6rn_Engel?= Subject: Re: [PATCH 1/1] fat: improve sync performance by grouping writes revised References: <454765AC.1050905@xandros.com> <87mz7cqvd8.fsf@duaron.myhome.or.jp> From: OGAWA Hirofumi Date: Wed, 01 Nov 2006 05:23:58 +0900 In-Reply-To: (Holden Karau's message of "Tue\, 31 Oct 2006 13\:46\:46 -0500") Message-ID: <87slh4tesh.fsf@duaron.myhome.or.jp> User-Agent: Gnus/5.11 (Gnus v5.11) Emacs/22.0.90 (gnu/linux) MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1239 Lines: 29 "Holden Karau" writes: > The performance increase is pretty small. Using an old external dirve > I had lying around I got: > diff -y stock/10k modified/10k > 10240+0 records in | 1024+0 > records in > 10240+0 records out | 1024+0 > records out > 5242880 bytes transferred in 18.280922 seconds (286795 bytes/ | 524288 > bytes transferred in 1.824985 seconds (287283 bytes/se 1024 records out 1.824985 seconds. Is there decrease case? I assume the result is same. So, we would need different approach. > diff -y stock/1k modified/1k > 1024+0 records in 1024+0 > records in > 1024+0 records out 1024+0 > records out > 524288 bytes transferred in 1.777250 seconds (295000 bytes/se | 524288 > bytes transferred in 1.764748 seconds (297089 bytes/se -- OGAWA Hirofumi - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/