Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756012Ab1CHCnl (ORCPT ); Mon, 7 Mar 2011 21:43:41 -0500 Received: from fgwmail5.fujitsu.co.jp ([192.51.44.35]:57800 "EHLO fgwmail5.fujitsu.co.jp" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753998Ab1CHCnk (ORCPT ); Mon, 7 Mar 2011 21:43:40 -0500 X-SecurityPolicyCheck-FJ: OK by FujitsuOutboundMailChecker v1.3.1 From: KOSAKI Motohiro To: Andi Kleen Subject: Re: [PATCH 8/8] Add VM counters for transparent hugepages Cc: kosaki.motohiro@jp.fujitsu.com, Andi Kleen , akpm@linux-foundation.org, linux-mm@kvack.org, linux-kernel@vger.kernel.org In-Reply-To: <20110307163513.GC13384@alboin.amr.corp.intel.com> References: <20110307172609.8A01.A69D9226@jp.fujitsu.com> <20110307163513.GC13384@alboin.amr.corp.intel.com> Message-Id: <20110308114159.7EAD.A69D9226@jp.fujitsu.com> MIME-Version: 1.0 Content-Type: text/plain; charset="US-ASCII" Content-Transfer-Encoding: 7bit X-Mailer: Becky! ver. 2.50.07 [ja] Date: Tue, 8 Mar 2011 11:43:23 +0900 (JST) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 819 Lines: 24 > > Don't we need to make per zone stastics? I'm afraid small dma zone > > makes much thp-splitting and screw up this stastics. > > Does it? I haven't seen that so far. > > If it happens a lot it would be better to disable THP for the 16MB DMA > zone at least. Or did you mean the 4GB zone? I assumered 4GB. And cpusets/mempolicy binding might makes similar issue. It can make only one zone high pressure. But, hmmm... Do you mean you don't hit any issue then? I don't think do don't tested NUMA machine. So, it has no practical problem I can agree this. Thanks. -- 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/