From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-pa0-f70.google.com (mail-pa0-f70.google.com [209.85.220.70]) by kanga.kvack.org (Postfix) with ESMTP id 8ABA16B0005 for ; Mon, 25 Jul 2016 04:17:54 -0400 (EDT) Received: by mail-pa0-f70.google.com with SMTP id ez1so319020363pab.0 for ; Mon, 25 Jul 2016 01:17:54 -0700 (PDT) Received: from lgeamrelo12.lge.com (LGEAMRELO12.lge.com. [156.147.23.52]) by mx.google.com with ESMTP id v187si32463300pfb.258.2016.07.25.01.17.53 for ; Mon, 25 Jul 2016 01:17:53 -0700 (PDT) Date: Mon, 25 Jul 2016 17:18:20 +0900 From: Minchan Kim Subject: Re: [PATCH 3/5] mm: Remove reclaim and compaction retry approximations Message-ID: <20160725081820.GD1660@bbox> References: <1469110261-7365-1-git-send-email-mgorman@techsingularity.net> <1469110261-7365-4-git-send-email-mgorman@techsingularity.net> MIME-Version: 1.0 In-Reply-To: <1469110261-7365-4-git-send-email-mgorman@techsingularity.net> Content-Type: text/plain; charset="us-ascii" Content-Disposition: inline Sender: owner-linux-mm@kvack.org List-ID: To: Mel Gorman Cc: Andrew Morton , Johannes Weiner , Michal Hocko , Vlastimil Babka , Linux-MM , LKML On Thu, Jul 21, 2016 at 03:10:59PM +0100, Mel Gorman wrote: > If per-zone LRU accounting is available then there is no point > approximating whether reclaim and compaction should retry based on pgdat > statistics. This is effectively a revert of "mm, vmstat: remove zone and > node double accounting by approximating retries" with the difference that > inactive/active stats are still available. This preserves the history of > why the approximation was retried and why it had to be reverted to handle > OOM kills on 32-bit systems. > > Signed-off-by: Mel Gorman Acked-by: Minchan Kim -- 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 From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752491AbcGYISA (ORCPT ); Mon, 25 Jul 2016 04:18:00 -0400 Received: from LGEAMRELO12.lge.com ([156.147.23.52]:53299 "EHLO lgeamrelo12.lge.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751418AbcGYIRy (ORCPT ); Mon, 25 Jul 2016 04:17:54 -0400 X-Original-SENDERIP: 156.147.1.127 X-Original-MAILFROM: minchan@kernel.org X-Original-SENDERIP: 165.244.98.203 X-Original-MAILFROM: minchan@kernel.org X-Original-SENDERIP: 10.177.223.161 X-Original-MAILFROM: minchan@kernel.org Date: Mon, 25 Jul 2016 17:18:20 +0900 From: Minchan Kim To: Mel Gorman CC: Andrew Morton , Johannes Weiner , Michal Hocko , Vlastimil Babka , Linux-MM , LKML Subject: Re: [PATCH 3/5] mm: Remove reclaim and compaction retry approximations Message-ID: <20160725081820.GD1660@bbox> References: <1469110261-7365-1-git-send-email-mgorman@techsingularity.net> <1469110261-7365-4-git-send-email-mgorman@techsingularity.net> MIME-Version: 1.0 In-Reply-To: <1469110261-7365-4-git-send-email-mgorman@techsingularity.net> User-Agent: Mutt/1.5.21 (2010-09-15) X-MIMETrack: Itemize by SMTP Server on LGEKRMHUB03/LGE/LG Group(Release 8.5.3FP6|November 21, 2013) at 2016/07/25 17:17:45, Serialize by Router on LGEKRMHUB03/LGE/LG Group(Release 8.5.3FP6|November 21, 2013) at 2016/07/25 17:17:45, Serialize complete at 2016/07/25 17:17:45 Content-Type: text/plain; charset="us-ascii" Content-Disposition: inline Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Thu, Jul 21, 2016 at 03:10:59PM +0100, Mel Gorman wrote: > If per-zone LRU accounting is available then there is no point > approximating whether reclaim and compaction should retry based on pgdat > statistics. This is effectively a revert of "mm, vmstat: remove zone and > node double accounting by approximating retries" with the difference that > inactive/active stats are still available. This preserves the history of > why the approximation was retried and why it had to be reverted to handle > OOM kills on 32-bit systems. > > Signed-off-by: Mel Gorman Acked-by: Minchan Kim