From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Holden Karau" Subject: Re: [PATCH 1/1] fat: improve sync performance by grouping writes in fat_mirror_bhs [really unmangled] Date: Fri, 27 Oct 2006 14:55:07 -0400 Message-ID: References: <4540A32E.5050602@pigscanfly.ca> <4540AA20.1090005@yahoo.com.au> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Cc: "Josef Sipek" , hirofumi@mail.parknet.co.jp, linux-kernel@vger.kernel.org, holdenk@xandros.com, "akpm@osdl.org" , linux-fsdevel@vger.kernel.org Return-path: To: "Nick Piggin" In-Reply-To: <4540AA20.1090005@yahoo.com.au> Content-Disposition: inline Sender: linux-kernel-owner@vger.kernel.org List-Id: linux-fsdevel.vger.kernel.org Based on some rather off-the cuff bench marking I've done I get around a 5 to 10% performance improve over the stock 2.6.18.1 performance. As the saying goes, there are lies, damn lies, and bench marks, so YMMV. On 10/26/06, Nick Piggin wrote: > Holden Karau wrote: > > From: Holden Karau http://www.holdenkarau.com > > > > This is an attempt at improving fat_mirror_bhs in sync mode [namely it > > writes all of the data for a backup block, and then blocks untill > > finished]. The old behaviour would write & block in smaller chunks, so > > this should be slightly faster. It also removes the fixme requesting > > that it be fixed to behave this way :-) > > Signed-off-by: Holden Karau http://www.holdenkarau.com > > So how much is performance improved? > > -- > SUSE Labs, Novell Inc. > Send instant messages to your online friends http://au.messenger.yahoo.com > > -- Cell: 613-276-1645