Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754717AbYKPVbX (ORCPT ); Sun, 16 Nov 2008 16:31:23 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1752468AbYKPVbO (ORCPT ); Sun, 16 Nov 2008 16:31:14 -0500 Received: from extu-mxob-2.symantec.com ([216.10.194.135]:38822 "EHLO extu-mxob-2.symantec.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751827AbYKPVbO (ORCPT ); Sun, 16 Nov 2008 16:31:14 -0500 Date: Sun, 16 Nov 2008 21:28:08 +0000 (GMT) From: Hugh Dickins X-X-Sender: hugh@blonde.site To: Rik van Riel cc: Linus Torvalds , Andrew Morton , KOSAKI Motohiro , LKML , linux-mm , Gene Heskett Subject: Re: [PATCH] mm: evict streaming IO cache first In-Reply-To: <49208E9A.5080801@redhat.com> Message-ID: References: <20081115181748.3410.KOSAKI.MOTOHIRO@jp.fujitsu.com> <20081115210039.537f59f5.akpm@linux-foundation.org> <49208E9A.5080801@redhat.com> MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 712 Lines: 17 On Sun, 16 Nov 2008, Rik van Riel wrote: > > I wonder if the "do not do mark_page_accessed at page fault time" > patch is triggering the current troublesome behaviour in the VM, > because actively used file pages are not moved out of the way of > the VM - which leads get_scan_ratio to believe that we are already > hitting the working set on the file side and should also start > scanning the anon LRUs. That patch is only in the -mm tree, not in 2.6.28-rc. Hugh -- 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/