From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail137.messagelabs.com (mail137.messagelabs.com [216.82.249.19]) by kvack.org (Postfix) with SMTP id 983546B0074 for ; Mon, 15 Dec 2008 05:55:42 -0500 (EST) Received: from m2.gw.fujitsu.co.jp ([10.0.50.72]) by fgwmail5.fujitsu.co.jp (Fujitsu Gateway) with ESMTP id mBFAv18x019563 for (envelope-from kosaki.motohiro@jp.fujitsu.com); Mon, 15 Dec 2008 19:57:01 +0900 Received: from smail (m2 [127.0.0.1]) by outgoing.m2.gw.fujitsu.co.jp (Postfix) with ESMTP id 3D8522AEA81 for ; Mon, 15 Dec 2008 19:57:01 +0900 (JST) Received: from s2.gw.fujitsu.co.jp (s2.gw.fujitsu.co.jp [10.0.50.92]) by m2.gw.fujitsu.co.jp (Postfix) with ESMTP id 1EB431EF081 for ; Mon, 15 Dec 2008 19:57:01 +0900 (JST) Received: from s2.gw.fujitsu.co.jp (localhost.localdomain [127.0.0.1]) by s2.gw.fujitsu.co.jp (Postfix) with ESMTP id 01D051DB803A for ; Mon, 15 Dec 2008 19:57:01 +0900 (JST) Received: from ml14.s.css.fujitsu.com (ml14.s.css.fujitsu.com [10.249.87.104]) by s2.gw.fujitsu.co.jp (Postfix) with ESMTP id 95BACE18005 for ; Mon, 15 Dec 2008 19:56:57 +0900 (JST) From: KOSAKI Motohiro Subject: Re: 2.6.28-rc8 big regression in VM In-Reply-To: <20081215095311.GB4422@ics.muni.cz> References: <20081215110231.00DF.KOSAKI.MOTOHIRO@jp.fujitsu.com> <20081215095311.GB4422@ics.muni.cz> Message-Id: <20081215193305.06C4.KOSAKI.MOTOHIRO@jp.fujitsu.com> MIME-Version: 1.0 Content-Type: text/plain; charset="US-ASCII" Content-Transfer-Encoding: 7bit Date: Mon, 15 Dec 2008 19:56:57 +0900 (JST) Sender: owner-linux-mm@kvack.org To: Lukas Hejtmanek Cc: kosaki.motohiro@jp.fujitsu.com, "linux-kernel@vger.kernel.org" , linux-mm List-ID: > On Mon, Dec 15, 2008 at 11:05:24AM +0900, KOSAKI Motohiro wrote: > > I also don't reproduce your problem. > > Could you get output of "cat /proc/meminfo", not only free command? > > attached meminfo and vmstat after dropping caches. MemTotal: 2016688 kB MemFree: 1528748 kB Buffers: 424 kB Cached: 140060 kB SwapCached: 0 kB Active(anon): 329884 kB Inactive(anon): 4 kB Active(file): 23368 kB Inactive(file): 47328 kB Unevictable: 0 kB Mlocked: 0 kB SwapTotal: 1542232 kB SwapFree: 1542232 kB Dirty: 64 kB Writeback: 0 kB AnonPages: 260100 kB Mapped: 85036 kB Usually, Cached - tmpfs ~= Active(file) + Inactive(file). tmpfs file isn't droppable. We should see Active(file) + Inactive(file) (= 70696kB) instead Cached. In addition, drop_cache sysctl can't drop Mapped memory. Then, this value isn't so wonder value, IMHO. -- 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