Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id ; Thu, 27 Dec 2001 01:11:50 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Thu, 27 Dec 2001 01:11:40 -0500 Received: from dsl-213-023-038-250.arcor-ip.net ([213.23.38.250]:17416 "EHLO starship.berlin") by vger.kernel.org with ESMTP id ; Thu, 27 Dec 2001 01:11:33 -0500 Content-Type: text/plain; charset=US-ASCII From: Daniel Phillips To: Anton Blanchard , Momchil Velikov Subject: Re: [PATCH] Scalable page cache - take two Date: Thu, 27 Dec 2001 07:15:01 +0100 X-Mailer: KMail [version 1.3.2] Cc: linux-kernel@vger.kernel.org In-Reply-To: <87bsgp7fcq.fsf@fadata.bg> <20011224005258.GB15536@krispykreme> In-Reply-To: <20011224005258.GB15536@krispykreme> MIME-Version: 1.0 Content-Transfer-Encoding: 7BIT Message-Id: Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On December 24, 2001 01:52 am, Anton Blanchard wrote: > This is the still 12 way ppc64, the results are similar to the last > test. It confirms that the current pagecache locking is a bottleneck > for larger SMP machines. > > We quickly hit the following spinlocks with the pagecache lock out of > the way: > > ext2_get_block: BKL > refile_buffer: lru_list_lock > remove_from_queues: lru_list_lock > try_to_free_buffers: lru_list_lock > d_lookup: dcache_lock > ext2_discard_prealloc: BKL > > Is someone working on removing the BKL from ext2 in 2.5? Al has already done most of the work, it won't take much to complete it. It wasn't a priority before 2.5 (stability was). It's nice to see somebody still cares about the speed of Ext2 ;) -- Daniel - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/