From mboxrd@z Thu Jan 1 00:00:00 1970 Subject: Re: [problem] raid performance loss with 2.6.26-rc8 on 32-bit x86 (bisected) From: Dan Williams In-Reply-To: <20080701190741.GB16501@csn.ul.ie> References: <1214877439.7885.40.camel@dwillia2-linux.ch.intel.com> <20080701080910.GA10865@csn.ul.ie> <20080701175855.GI32727@shadowen.org> <20080701190741.GB16501@csn.ul.ie> Content-Type: text/plain Date: Tue, 01 Jul 2008 15:28:32 -0700 Message-Id: <1214951312.26855.26.camel@dwillia2-linux.ch.intel.com> Mime-Version: 1.0 Content-Transfer-Encoding: 7bit Sender: owner-linux-mm@kvack.org Return-Path: To: Mel Gorman Cc: Andy Whitcroft , linux-mm@kvack.org, linux-kernel@vger.kernel.org, NeilBrown , babydr@baby-dragons.com, cl@linux-foundation.org, lee.schermerhorn@hp.com List-ID: On Tue, 2008-07-01 at 12:07 -0700, Mel Gorman wrote: > This looks kinda promising and depends heavily on how this patch was > tested in isolation. Dan, can you post the patch you use on 2.6.25 > because the commit in question should not have applied cleanly please? ? I have not tested this patch (54a6eb5c) in isolation. The patch that was applied to 2.6.25 was the raid5 performance enhancement patch. It is no longer in the equation since the problem is reproducible with stock raid0. -- Dan -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: email@kvack.org