From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by smtp.lore.kernel.org (Postfix) with ESMTP id 6930EC433F5 for ; Mon, 18 Apr 2022 06:30:34 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id B88FA8D0006; Mon, 18 Apr 2022 02:30:33 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id B38358D0002; Mon, 18 Apr 2022 02:30:33 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 9FF478D0006; Mon, 18 Apr 2022 02:30:33 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from relay.hostedemail.com (relay.hostedemail.com [64.99.140.26]) by kanga.kvack.org (Postfix) with ESMTP id 8F3D38D0002 for ; Mon, 18 Apr 2022 02:30:33 -0400 (EDT) Received: from smtpin04.hostedemail.com (a10.router.float.18 [10.200.18.1]) by unirelay10.hostedemail.com (Postfix) with ESMTP id 4466664D for ; Mon, 18 Apr 2022 06:30:33 +0000 (UTC) X-FDA: 79369025946.04.0257FD9 Received: from nksmu.kylinos.cn (mailgw.kylinos.cn [123.150.8.42]) by imf11.hostedemail.com (Postfix) with ESMTP id DB25E40003 for ; Mon, 18 Apr 2022 06:30:28 +0000 (UTC) X-UUID: 316ffda844054d3592c7579a8eff5bf9-20220418 X-UUID: 316ffda844054d3592c7579a8eff5bf9-20220418 Received: from cs2c.com.cn [(172.17.111.24)] by nksmu.kylinos.cn (envelope-from ) (Generic MTA) with ESMTP id 2020491148; Mon, 18 Apr 2022 14:29:04 +0800 X-ns-mid: postfix-625D057C-8062484640 Received: from [172.20.4.85] (unknown [172.20.4.85]) by cs2c.com.cn (NSMail) with ESMTPSA id B9033383C03E; Mon, 18 Apr 2022 14:30:20 +0800 (CST) From: Bo Xu Subject: Re: [Q] page allocation failure when there are many free pages Reply-To: 20220417033505.sgxlhfyoumqyrkuo@master.kvack.org To: richard.weiyang@gmail.com Cc: linux-mm@kvack.org References: <20220417033505.sgxlhfyoumqyrkuo@master> Message-ID: Date: Mon, 18 Apr 2022 14:29:44 +0800 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:78.0) Gecko/20100101 Thunderbird/78.8.1 MIME-Version: 1.0 In-Reply-To: <20220417033505.sgxlhfyoumqyrkuo@master> Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 8bit Content-Language: en-US Authentication-Results: imf11.hostedemail.com; dkim=none; dmarc=none; spf=pass (imf11.hostedemail.com: domain of xubo@kylinos.cn designates 123.150.8.42 as permitted sender) smtp.mailfrom=xubo@kylinos.cn X-Rspam-User: X-Rspamd-Server: rspam08 X-Rspamd-Queue-Id: DB25E40003 X-Stat-Signature: 5ita1fsk9rasez78456zyiyrw8wqj1uc X-HE-Tag: 1650263428-691 X-Bogosity: Ham, tests=bogofilter, spamicity=0.183809, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: Hi, Yang     From the messages you provided, there are not much free pages.     I guess the page alloc is happing in Node 0 with zone     Normal.But in zone Normal free mem is lower than low mem,so     there are some memory pressure is your machine.But now i have     no idea why page recliam or others did not make effect. Best Regards,  Bo,Xu