Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755104AbYLOK5S (ORCPT ); Mon, 15 Dec 2008 05:57:18 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1753251AbYLOK5F (ORCPT ); Mon, 15 Dec 2008 05:57:05 -0500 Received: from fgwmail5.fujitsu.co.jp ([192.51.44.35]:50534 "EHLO fgwmail5.fujitsu.co.jp" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752851AbYLOK5E (ORCPT ); Mon, 15 Dec 2008 05:57:04 -0500 From: KOSAKI Motohiro To: Lukas Hejtmanek Subject: Re: 2.6.28-rc8 big regression in VM Cc: kosaki.motohiro@jp.fujitsu.com, "linux-kernel@vger.kernel.org" , linux-mm 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 X-Mailer: Becky! ver. 2.42 [ja] Date: Mon, 15 Dec 2008 19:56:57 +0900 (JST) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1228 Lines: 42 > 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 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/