From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1750739AbWGFS4L (ORCPT ); Thu, 6 Jul 2006 14:56:11 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1750736AbWGFS4L (ORCPT ); Thu, 6 Jul 2006 14:56:11 -0400 Received: from mail.electro-mechanical.com ([216.184.71.30]:52113 "EHLO mail.electro-mechanical.com") by vger.kernel.org with ESMTP id S1750739AbWGFS4K (ORCPT ); Thu, 6 Jul 2006 14:56:10 -0400 Date: Thu, 6 Jul 2006 14:56:06 -0400 From: William Thompson To: Lee Revell Cc: linux-kernel@vger.kernel.org Subject: Re: SATA in 2.6.17 vs 2.6.15 (x86/ICH6) Message-ID: <20060706185606.GV28967@electro-mechanical.com> References: <20060630184156.GA8086@electro-mechanical.com> <1151701440.32444.44.camel@mindpipe> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1151701440.32444.44.camel@mindpipe> User-Agent: Mutt/1.5.11 Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Fri, Jun 30, 2006 at 05:04:00PM -0400, Lee Revell wrote: > On Fri, 2006-06-30 at 14:41 -0400, William Thompson wrote: > > *** I'm not on the list, please always keep me in CC *** > > > > The speed of SATA in 2.6.17 is significantly lower in my test than 2.6.15. > > > > In .15, I would see over 10mb/sec avg writing over 16,000 files (~2.4gb) to a > > fat32 partition. > > > > In .17, I see it start at 2-3mb/sec and work it's way down to 500kb/sec > > towards the end. Even the system is not as responsive (The system's / is a > > tmpfs which all programs, including /usr, are stored), not even when using > > ssh. > > > > I used the same .config in .17 as I did with .15 (make oldconfig) > > What does the oprofile output look like for both cases? Lee, turns out this problem was due to a new option introduced in 2.6.16 that I turned off (Thinking it would save on space). The option was CONFIG_SLAB. Apparently, SLOB is not worth using in my case. It's a bit too fat on memory usage.