From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail202.messagelabs.com (mail202.messagelabs.com [216.82.254.227]) by kanga.kvack.org (Postfix) with ESMTP id 952096B0082 for ; Wed, 20 May 2009 07:20:13 -0400 (EDT) Subject: Re: [PATCH 2/3] vmscan: make mapped executable pages the first class citizen From: Andi Kleen References: <20090519032759.GA7608@localhost> <20090519133422.4ECC.A69D9226@jp.fujitsu.com> <20090519062503.GA9580@localhost> Date: Wed, 20 May 2009 13:20:24 +0200 In-Reply-To: <20090519062503.GA9580@localhost> (Wu Fengguang's message of "Tue, 19 May 2009 14:25:03 +0800") Message-ID: <87pre4nhqf.fsf@basil.nowhere.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Sender: owner-linux-mm@kvack.org To: Wu Fengguang Cc: KOSAKI Motohiro , Christoph Lameter , Andrew Morton , LKML , Elladan , Nick Piggin , Johannes Weiner , Peter Zijlstra , Rik van Riel , "tytso@mit.edu" , "linux-mm@kvack.org" , "minchan.kim@gmail.com" List-ID: Wu Fengguang writes: > > 2.6.30-rc4-mm, VM_EXEC protection ON > ------------------------------------ > begin: 2444 6652 50021 207 0 619959 > end: 284 231752 233394 210 773879 20890132 > restore: 399 231973 234352 251 776879 20960568 > > We can reach basically the same conclusion from the above data. One scenario that might be useful to test is what happens when some very large processes, all mapped and executable exceed memory and fight each other for the working set. Do you have regressions then compared to without the patches? -Andi -- ak@linux.intel.com -- Speaking for myself only. -- 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