Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752555AbcL2IZM (ORCPT ); Thu, 29 Dec 2016 03:25:12 -0500 Received: from out0-142.mail.aliyun.com ([140.205.0.142]:43001 "EHLO out0-142.mail.aliyun.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752515AbcL2IZL (ORCPT ); Thu, 29 Dec 2016 03:25:11 -0500 X-Greylist: delayed 316 seconds by postgrey-1.27 at vger.kernel.org; Thu, 29 Dec 2016 03:25:10 EST X-Alimail-AntiSpam: AC=PASS;BC=-1|-1;BR=01201311R171e4;FP=0|-1|-1|-1|0|-1|-1|-1;HT=e02c03302;MF=hillf.zj@alibaba-inc.com;NM=1;PH=DS;RN=9;SR=0;TI=SMTPD_---.7MaxhG4_1482999565; Reply-To: "Hillf Danton" From: "Hillf Danton" To: "'Michal Hocko'" , Cc: "'Andrew Morton'" , "'Mel Gorman'" , "'Johannes Weiner'" , "'Vlastimil Babka'" , "'Rik van Riel'" , "'LKML'" , "'Michal Hocko'" References: <20161228153032.10821-1-mhocko@kernel.org> <20161228153032.10821-8-mhocko@kernel.org> In-Reply-To: <20161228153032.10821-8-mhocko@kernel.org> Subject: Re: [PATCH 7/7] mm, vmscan: add mm_vmscan_inactive_list_is_low tracepoint Date: Thu, 29 Dec 2016 16:19:25 +0800 Message-ID: <06db01d261ac$44a57910$cdf06b30$@alibaba-inc.com> MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit X-Mailer: Microsoft Outlook 14.0 Thread-Index: AQKdd06YOfI90de32HGjIBSPbRj/+wIPSXxhn3ftdtA= Content-Language: zh-cn Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 534 Lines: 13 On Wednesday, December 28, 2016 11:31 PM Michal Hocko wrote: > From: Michal Hocko > > Currently we have tracepoints for both active and inactive LRU lists > reclaim but we do not have any which would tell us why we we decided to > age the active list. Without that it is quite hard to diagnose > active/inactive lists balancing. Add mm_vmscan_inactive_list_is_low > tracepoint to tell us this information. > > Signed-off-by: Michal Hocko > --- Acked-by: Hillf Danton