From: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
To: Wei Yang <richard.weiyang@gmail.com>, Bo Xu <xubo@kylinos.cn>
Cc: linux-mm@kvack.org
Subject: Re: [Q] page allocation failure when there are many free pages
Date: Mon, 18 Apr 2022 17:22:40 +0900 [thread overview]
Message-ID: <4d1daf7a-d660-8661-220d-969bf81a2fbb@I-love.SAKURA.ne.jp> (raw)
In-Reply-To: <ec90d338-f715-493b-4a88-62cc23cf03a0@kylinos.cn>
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 .
next prev parent reply other threads:[~2022-04-18 8:22 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 [this message]
2022-04-19 0:06 ` Wei Yang
2022-04-19 0:03 ` Wei Yang
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