Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756354AbZFHO4S (ORCPT ); Mon, 8 Jun 2009 10:56:18 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1755174AbZFHO4J (ORCPT ); Mon, 8 Jun 2009 10:56:09 -0400 Received: from smtp3.ultrahosting.com ([74.213.175.254]:46700 "EHLO smtp.ultrahosting.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1753905AbZFHO4I (ORCPT ); Mon, 8 Jun 2009 10:56:08 -0400 Date: Mon, 8 Jun 2009 10:55:55 -0400 (EDT) From: Christoph Lameter X-X-Sender: cl@gentwo.org To: Mel Gorman cc: Rik van Riel , KOSAKI Motohiro , yanmin.zhang@intel.com, Wu Fengguang , linuxram@us.ibm.com, linux-mm , LKML Subject: Re: [PATCH 1/3] Reintroduce zone_reclaim_interval for when zone_reclaim() scans and fails to avoid CPU spinning at 100% on NUMA In-Reply-To: <20090608143857.GG15070@csn.ul.ie> Message-ID: References: <1244466090-10711-1-git-send-email-mel@csn.ul.ie> <1244466090-10711-2-git-send-email-mel@csn.ul.ie> <4A2D129D.3020309@redhat.com> <20090608135433.GD15070@csn.ul.ie> <20090608143857.GG15070@csn.ul.ie> User-Agent: Alpine 1.10 (DEB 962 2008-03-14) MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 683 Lines: 19 On Mon, 8 Jun 2009, Mel Gorman wrote: > > The tmpfs pages are unreclaimable and therefore should not be on the anon > > lru. > > > > tmpfs pages can be swap-backed so can be reclaimable. Regardless of what > list they are on, we still need to know how many of them there are if > this patch is to be avoided. If they are reclaimable then why does it matter? They can be pushed out if you configure zone reclaim to be that aggressive. -- 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/