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 32CA1C433EF for ; Tue, 19 Apr 2022 00:06:43 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id 8998B6B00D2; Mon, 18 Apr 2022 20:06:42 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id 8494A8D0026; Mon, 18 Apr 2022 20:06:42 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 714986B00D4; Mon, 18 Apr 2022 20:06:42 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from relay.hostedemail.com (relay.hostedemail.com [64.99.140.25]) by kanga.kvack.org (Postfix) with ESMTP id 643A16B00D2 for ; Mon, 18 Apr 2022 20:06:42 -0400 (EDT) Received: from smtpin01.hostedemail.com (a10.router.float.18 [10.200.18.1]) by unirelay07.hostedemail.com (Postfix) with ESMTP id 36E9221192 for ; Tue, 19 Apr 2022 00:06:42 +0000 (UTC) X-FDA: 79371687444.01.E81B689 Received: from mail-ej1-f43.google.com (mail-ej1-f43.google.com [209.85.218.43]) by imf25.hostedemail.com (Postfix) with ESMTP id 907D8A0012 for ; Tue, 19 Apr 2022 00:06:40 +0000 (UTC) Received: by mail-ej1-f43.google.com with SMTP id bv19so29692362ejb.6 for ; Mon, 18 Apr 2022 17:06:41 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=date:from:to:cc:subject:message-id:reply-to:references:mime-version :content-disposition:in-reply-to:user-agent; bh=ySKgOFQ/bWfnzbFuQ0rX/2vbpDqBOLenN5AwGRt3By0=; b=VAgszVDc2mvieM7rXgI433FPM3EF/HnqDdQgyolq7MPefLZRd+yPS5iH1424vKhlH/ iFOPiiuD25ygMVqLknG9Yw8iDHHyYqqTUjMTxvfYbReDANAV0jBnRrf9bxiMUvS1wXDx 3VNRCCery86HCIk3pg47spzxqGkT8y17tnS8fyyyoU1++9vF6HkX9h4Mo9aiOOvv3DgG P3NOxCCc0fbLGuY+NICvpM+vGSckfDy5xon1ftR+HBHHYA8ScQGpOX4vM0jRJBTHvdCv /a3L/haL0n3y3k1SsyfJhDvu4hqTZ0bgEBGnkds0x0H3uVUstU2hmMTZyOvTyrIOFN5n 5Uvw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:date:from:to:cc:subject:message-id:reply-to :references:mime-version:content-disposition:in-reply-to:user-agent; bh=ySKgOFQ/bWfnzbFuQ0rX/2vbpDqBOLenN5AwGRt3By0=; b=3OIkWOrcVUWDksJI8T8f/CSyp+HJOi7tgEebewX/xR8yAIshCl6qd3sY6UPtys1Ipn Xmdq/o3i6ClZOx0S1RhRFhnYJyEKaj+Nf679gVeGbXfuAY3qOkMD/y06IXgfGjOLZvkY +/V4dra1Kc05PWjfPeW1NcPLX+WqxjW546euCAB18oQ7E3CRf0Zf9Zg7OcIGPx+uFIXx 7ov4Ow4CqpdLB+Z4Nr6h08vrRGUi0Z5M+POhp3wXeRu0rMp7XXtNygHgdjCAgK+dzSNg BhnXDqgj04qlK9CnJ+hp8QsWz6AS+rTw+6sREUP9PVwLcVuUT5T3MmEf7R9PMMeu/7UC W53g== X-Gm-Message-State: AOAM5303jphuVFBXCTy4e+WKQJkPXBg4SeEx9OZhOwNP28SIk6vE9W99 8pq0OnPPUtP95w2vIvs6TuhLlgZXpRk= X-Google-Smtp-Source: ABdhPJw5igFbk6TAvJAirWLcxd6SmqViuPiVdBXMpc1dLBzB1Z1j47a9FFLJUstx8wZ8JcWxV3jM/w== X-Received: by 2002:a17:906:a28f:b0:6e8:8dfb:12af with SMTP id i15-20020a170906a28f00b006e88dfb12afmr11063766ejz.451.1650326800544; Mon, 18 Apr 2022 17:06:40 -0700 (PDT) Received: from localhost ([185.92.221.13]) by smtp.gmail.com with ESMTPSA id ch4-20020a170906c2c400b006efcc061c1fsm876848ejb.178.2022.04.18.17.06.39 (version=TLS1_2 cipher=ECDHE-ECDSA-CHACHA20-POLY1305 bits=256/256); Mon, 18 Apr 2022 17:06:40 -0700 (PDT) Date: Tue, 19 Apr 2022 00:06:39 +0000 From: Wei Yang To: Tetsuo Handa Cc: Wei Yang , Bo Xu , linux-mm@kvack.org Subject: Re: [Q] page allocation failure when there are many free pages Message-ID: <20220419000639.khdot3kigk6s2jne@master> Reply-To: Wei Yang References: <20220417033505.sgxlhfyoumqyrkuo@master> <4d1daf7a-d660-8661-220d-969bf81a2fbb@I-love.SAKURA.ne.jp> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <4d1daf7a-d660-8661-220d-969bf81a2fbb@I-love.SAKURA.ne.jp> User-Agent: NeoMutt/20170113 (1.7.2) X-Rspamd-Server: rspam10 X-Rspamd-Queue-Id: 907D8A0012 X-Stat-Signature: de8ewfue5i8rxi9t87ff3mt9rjae88m7 Authentication-Results: imf25.hostedemail.com; dkim=pass header.d=gmail.com header.s=20210112 header.b=VAgszVDc; spf=pass (imf25.hostedemail.com: domain of richard.weiyang@gmail.com designates 209.85.218.43 as permitted sender) smtp.mailfrom=richard.weiyang@gmail.com; dmarc=pass (policy=none) header.from=gmail.com X-Rspam-User: X-HE-Tag: 1650326800-730136 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: On Mon, Apr 18, 2022 at 05:22:40PM +0900, Tetsuo Handa wrote: >On 2022/04/18 15:29, Bo Xu wrote: >> 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. >> > >The kernel says that it was a GFP_NOWAIT allocation request, which does not >wait for page reclaim or others. > > java: page allocation failure: order:0, mode:0x400000(GFP_NOWAIT), nodemask=(null),cpuset=/,mems_allowed=0 > CPU: 6 PID: 7121 Comm: java Kdump: loaded Not tainted 4.19.95-29 #1 > >Question is why it was a GFP_NOWAIT allocation request. Try installing debuginfo kernel >package and decoding exact call traces (filenames and lines) using scripts/faddr2line . Thanks, let me have a try. -- Wei Yang Help you, Help me