From: Wei Yang <richard.weiyang@gmail.com>
To: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
Cc: Wei Yang <richard.weiyang@gmail.com>, Bo Xu <xubo@kylinos.cn>,
linux-mm@kvack.org
Subject: Re: [Q] page allocation failure when there are many free pages
Date: Tue, 19 Apr 2022 00:06:39 +0000 [thread overview]
Message-ID: <20220419000639.khdot3kigk6s2jne@master> (raw)
In-Reply-To: <4d1daf7a-d660-8661-220d-969bf81a2fbb@I-love.SAKURA.ne.jp>
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
next prev parent reply other threads:[~2022-04-19 0:06 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-04-17 3:35 Wei Yang
2022-04-18 6:29 ` Bo Xu
2022-04-18 8:22 ` Tetsuo Handa
2022-04-19 0:06 ` Wei Yang [this message]
2022-04-19 0:03 ` Wei Yang
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20220419000639.khdot3kigk6s2jne@master \
--to=richard.weiyang@gmail.com \
--cc=linux-mm@kvack.org \
--cc=penguin-kernel@I-love.SAKURA.ne.jp \
--cc=xubo@kylinos.cn \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox