From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id ; Fri, 7 Sep 2001 11:54:11 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Fri, 7 Sep 2001 11:54:01 -0400 Received: from ns.caldera.de ([212.34.180.1]:41427 "EHLO ns.caldera.de") by vger.kernel.org with ESMTP id ; Fri, 7 Sep 2001 11:53:48 -0400 Date: Fri, 7 Sep 2001 17:53:24 +0200 From: Christoph Hellwig To: Peter Wong Cc: linux-kernel@vger.kernel.org, lse-tech@lists.sourceforge.net, Hans Tannenberger , Ruth Forester , lahr , "Carbonari, Steven" Subject: Re: [Lse-tech] Re: Lockmeter Analysis of 2 DDs Message-ID: <20010907175324.A19821@caldera.de> Mail-Followup-To: Christoph Hellwig , Peter Wong , linux-kernel@vger.kernel.org, lse-tech@lists.sourceforge.net, Hans Tannenberger , Ruth Forester , lahr , "Carbonari, Steven" In-Reply-To: Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.2.5i In-Reply-To: ; from wpeter@us.ibm.com on Fri, Sep 07, 2001 at 10:47:37AM -0500 Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Fri, Sep 07, 2001 at 10:47:37AM -0500, Peter Wong wrote: > Indeed, io_request_lock is very hot once the bounce buffers were > eliminated. Is anyone working on a patch for the io_request_lock that > possibly take the global lock and splits it into a per device queue lock? > We understand that getting this patch into 2.4 is unlikely, but it would > be nice to have this patch available on 2.4 for experimental purposes. ftp://ftp.kernel.org/pub/linux/kernel/people/axboe/v2.5/ Christoph -- Of course it doesn't work. We've performed a software upgrade.