From: Matt Fleming <mfleming@cloudflare.com>
To: "Christoph Lameter (Ampere)" <cl@gentwo.org>
Cc: linux-mm@kvack.org, willy@infradead.org,
kernel-team <kernel-team@cloudflare.com>
Subject: Re: order-0 page alloc failures during interrupt context on v6.6.43
Date: Fri, 23 Aug 2024 21:25:30 +0100 [thread overview]
Message-ID: <CAGis_TVWeUKUROj2uJrnw=HE8LW-KaP9r2Ax1Juuz5WRqCrp+g@mail.gmail.com> (raw)
In-Reply-To: <f085975c-d554-53d6-8281-6c22f0b5f839@gentwo.org>
On Fri, Aug 23, 2024 at 5:09 PM Christoph Lameter (Ampere)
<cl@gentwo.org> wrote:
>
> Look at the full kernel log output until the time of the allocation
> failure? It looks like there is enough memory in every zone to satify the
> allocation request.
>
> Stacktrace looks like memory is pushed out via kswapd and zram to
> somewhere and then we get interrupted by incoming network traffic.
Sure. My original email was a bit terse because it was a continuation
from a discussion on IRC and I didn't explicitly say so but I already
read the stacktrace. As you say, given that there's plenty of free
pages in the zones including factoring in the watermarks, it's not
clear to me why the allocation failed at all.
prev parent reply other threads:[~2024-08-23 20:25 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-08-22 20:02 Matt Fleming
2024-08-22 22:07 ` Matt Fleming
2024-08-29 15:48 ` Vlastimil Babka
2024-08-30 15:43 ` Matt Fleming
2024-09-01 19:24 ` Vlastimil Babka
2024-08-23 16:09 ` Christoph Lameter (Ampere)
2024-08-23 20:25 ` Matt Fleming [this message]
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='CAGis_TVWeUKUROj2uJrnw=HE8LW-KaP9r2Ax1Juuz5WRqCrp+g@mail.gmail.com' \
--to=mfleming@cloudflare.com \
--cc=cl@gentwo.org \
--cc=kernel-team@cloudflare.com \
--cc=linux-mm@kvack.org \
--cc=willy@infradead.org \
/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