From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail138.messagelabs.com (mail138.messagelabs.com [216.82.249.35]) by kanga.kvack.org (Postfix) with ESMTP id E85A88D0040 for ; Thu, 24 Mar 2011 03:43:21 -0400 (EDT) Received: from m1.gw.fujitsu.co.jp (unknown [10.0.50.71]) by fgwmail6.fujitsu.co.jp (Postfix) with ESMTP id 628D43EE0AE for ; Thu, 24 Mar 2011 16:43:17 +0900 (JST) Received: from smail (m1 [127.0.0.1]) by outgoing.m1.gw.fujitsu.co.jp (Postfix) with ESMTP id 4A6A945DE5D for ; Thu, 24 Mar 2011 16:43:17 +0900 (JST) Received: from s1.gw.fujitsu.co.jp (s1.gw.fujitsu.co.jp [10.0.50.91]) by m1.gw.fujitsu.co.jp (Postfix) with ESMTP id 3003345DE56 for ; Thu, 24 Mar 2011 16:43:17 +0900 (JST) Received: from s1.gw.fujitsu.co.jp (localhost.localdomain [127.0.0.1]) by s1.gw.fujitsu.co.jp (Postfix) with ESMTP id 227651DB8048 for ; Thu, 24 Mar 2011 16:43:17 +0900 (JST) Received: from ml13.s.css.fujitsu.com (ml13.s.css.fujitsu.com [10.240.81.133]) by s1.gw.fujitsu.co.jp (Postfix) with ESMTP id E1C751DB8044 for ; Thu, 24 Mar 2011 16:43:16 +0900 (JST) From: KOSAKI Motohiro Subject: Re: [PATCH 1/5] vmscan: remove all_unreclaimable check from direct reclaim path completely In-Reply-To: References: <20110324162936.CC87.A69D9226@jp.fujitsu.com> Message-Id: <20110324164307.CC91.A69D9226@jp.fujitsu.com> MIME-Version: 1.0 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: 8bit Date: Thu, 24 Mar 2011 16:43:15 +0900 (JST) Sender: owner-linux-mm@kvack.org List-ID: To: Minchan Kim Cc: kosaki.motohiro@jp.fujitsu.com, linux-kernel@vger.kernel.org, Andrew Morton , David Rientjes , Linus Torvalds , Rik van Riel , Oleg Nesterov , linux-mm , Andrey Vagin , Hugh Dickins , KAMEZAWA Hiroyuki , Nick Piggin , Johannes Weiner > On Thu, Mar 24, 2011 at 4:28 PM, KOSAKI Motohiro > wrote: > >> For example, In 4G desktop system. > >> 32M full scanning and fail to reclaim a page. > >> It's under 1% coverage. > > > > ?? I'm sorry. I haven't catch it. > > Where 32M come from? > > (1<<12) * 4K + (1<<11) + 4K + .. (1 << 0) + 4K in shrink_zones. (lru-pages>>12) + (lru-pages>>11) + (lru-pages>>10) ... =~ 2 * lru-page ? -- 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/ . Fight unfair telecom internet charges in Canada: sign http://stopthemeter.ca/ Don't email: email@kvack.org