From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S261586AbVF1B07 (ORCPT ); Mon, 27 Jun 2005 21:26:59 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S262367AbVF1B07 (ORCPT ); Mon, 27 Jun 2005 21:26:59 -0400 Received: from holomorphy.com ([66.93.40.71]:19598 "EHLO holomorphy.com") by vger.kernel.org with ESMTP id S261586AbVF1B0x (ORCPT ); Mon, 27 Jun 2005 21:26:53 -0400 Date: Mon, 27 Jun 2005 18:26:46 -0700 From: William Lee Irwin III To: Nick Piggin Cc: Benjamin LaHaise , Andrew Morton , linux-kernel@vger.kernel.org, linux-mm@kvack.org Subject: Re: [rfc] lockless pagecache Message-ID: <20050628012646.GP3334@holomorphy.com> References: <42BF9CD1.2030102@yahoo.com.au> <20050627004624.53f0415e.akpm@osdl.org> <42BFB287.5060104@yahoo.com.au> <20050627131710.GC13945@kvack.org> <42C09AB3.7030907@yahoo.com.au> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <42C09AB3.7030907@yahoo.com.au> Organization: The Domain of Holomorphy User-Agent: Mutt/1.5.9i Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Benjamin LaHaise wrote: >> Shared memory overhead doesn't show up on any of the database benchmarks >> I've seen, as they tend to use huge pages that are locked in memory, and >> thus don't tend to access the page cache at all after ramp up. On Tue, Jun 28, 2005 at 10:32:51AM +1000, Nick Piggin wrote: > To be quite honest I don't have any real workloads here that stress > it, however I was told that it is a problem for oracle database. If > there is anyone else who has problems then I'd be interested to hear > them as well. It's vlm-specific. -- wli