From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail203.messagelabs.com (mail203.messagelabs.com [216.82.254.243]) by kanga.kvack.org (Postfix) with ESMTP id 2840F6B004F for ; Mon, 8 Jun 2009 09:20:15 -0400 (EDT) Date: Mon, 8 Jun 2009 15:38:57 +0100 From: Mel Gorman Subject: Re: [PATCH 1/3] Reintroduce zone_reclaim_interval for when zone_reclaim() scans and fails to avoid CPU spinning at 100% on NUMA Message-ID: <20090608143857.GG15070@csn.ul.ie> 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> MIME-Version: 1.0 Content-Type: text/plain; charset=iso-8859-15 Content-Disposition: inline In-Reply-To: Sender: owner-linux-mm@kvack.org To: Christoph Lameter Cc: Rik van Riel , KOSAKI Motohiro , yanmin.zhang@intel.com, Wu Fengguang , linuxram@us.ibm.com, linux-mm , LKML List-ID: On Mon, Jun 08, 2009 at 10:33:41AM -0400, Christoph Lameter wrote: > On Mon, 8 Jun 2009, Mel Gorman wrote: > > > Yes, they're on separate LRU lists but they are not the only pages on those > > lists. The tmpfs pages are mixed in together with anonymous pages so we > > cannot use NR_*_ANON. > > 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. -- Mel Gorman Part-time Phd Student Linux Technology Center University of Limerick IBM Dublin Software Lab -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: email@kvack.org