From mboxrd@z Thu Jan 1 00:00:00 1970 Date: Sat, 28 Jul 2007 23:21:54 +0900 From: KAMEZAWA Hiroyuki Subject: Re: NUMA policy issues with ZONE_MOVABLE Message-Id: <20070728232154.d84f0bcb.kamezawa.hiroyu@jp.fujitsu.com> In-Reply-To: <20070728231032.2ec7bd35.kamezawa.hiroyu@jp.fujitsu.com> References: <20070725111646.GA9098@skynet.ie> <20070726132336.GA18825@skynet.ie> <20070726225920.GA10225@skynet.ie> <20070727082046.GA6301@skynet.ie> <20070727154519.GA21614@skynet.ie> <20070728162844.9d5b8c6e.kamezawa.hiroyu@jp.fujitsu.com> <20070728231032.2ec7bd35.kamezawa.hiroyu@jp.fujitsu.com> Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: owner-linux-mm@kvack.org Return-Path: To: KAMEZAWA Hiroyuki Cc: mel@csn.ul.ie, clameter@sgi.com, linux-mm@kvack.org, Lee.Schermerhorn@hp.com, ak@suse.de, akpm@linux-foundation.org, pj@sgi.com List-ID: On Sat, 28 Jul 2007 23:10:32 +0900 KAMEZAWA Hiroyuki wrote: > > H1N1D1H2N2D2H3N3D3 instead of > > H1H2H3N1N2N3D1D2D3 > > > > If it's node-order, does this scheme break? > > > > Maybe no. "skip" will point to the nearest available zone anyway. > But there may be better scheme. This is jus an easy idea. > Assume zonelist on Node0, zone order: M0M1M2M3N0N1N2N3D0 (only node 0 has zone dma) node order: M0N0D0M1N1M2N2N3 GFP_KERNEL for zone_order: skip 4, find N0N2N3D0 GFP_KERNEL for node_order: skip 1, find N0D0N2N3 I'm not sure that this easy trick can show performance benefit. Thanks, -Kame -- 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