From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S262775AbVG2UC0 (ORCPT ); Fri, 29 Jul 2005 16:02:26 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S262783AbVG2UCW (ORCPT ); Fri, 29 Jul 2005 16:02:22 -0400 Received: from smtp.osdl.org ([65.172.181.4]:20660 "EHLO smtp.osdl.org") by vger.kernel.org with ESMTP id S262786AbVG2UAo (ORCPT ); Fri, 29 Jul 2005 16:00:44 -0400 Date: Fri, 29 Jul 2005 12:59:28 -0700 From: Andrew Morton To: "Salyzyn, Mark" Cc: drab@kepler.fjfi.cvut.cz, linux-kernel@vger.kernel.org, markh@osdl.org Subject: Re: AACRAID failure with 2.6.13-rc1 Message-Id: <20050729125928.18d41cf7.akpm@osdl.org> In-Reply-To: <60807403EABEB443939A5A7AA8A7458B017927DC@otce2k01.adaptec.com> References: <60807403EABEB443939A5A7AA8A7458B017927DC@otce2k01.adaptec.com> X-Mailer: Sylpheed version 1.0.4 (GTK+ 1.2.10; i386-redhat-linux-gnu) Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org "Salyzyn, Mark" wrote: > > Martin may be overplaying the performance angle. > > A previous patch took the adapter from 64K to 4MB transaction sizes > across the board. This caused Martin's adapter and drive combination to > tip-over. We had to scale back to 128KB sized transactions to get > stability on his system. All systems handled the 4MB I/O size in our > tests, but the tests that were done some time ago were not performed > with the latest kernel, which contributed to a change in testing > corners. Confused. The above appears to indicate that we should put the workaround into 2.6.13, yes?