From: Jens Axboe <[email protected]>
To: Felix Moessbauer <[email protected]>
Cc: [email protected], [email protected],
[email protected], [email protected],
[email protected], [email protected],
[email protected], [email protected],
[email protected]
Subject: Re: [PATCH v3 1/1] io_uring/sqpoll: inherit cpumask of creating process
Date: Sat, 07 Sep 2024 07:40:35 -0600 [thread overview]
Message-ID: <[email protected]> (raw)
In-Reply-To: <[email protected]>
On Sat, 07 Sep 2024 12:02:04 +0200, Felix Moessbauer wrote:
> The submit queue polling threads are userland threads that just never
> exit to the userland. In case the creating task is part of a cgroup
> with the cpuset controller enabled, the poller should also stay within
> that cpuset. This also holds, as the poller belongs to the same cgroup
> as the task that started it.
>
> With the current implementation, a process can "break out" of the
> defined cpuset by creating sq pollers consuming CPU time on other CPUs,
> which is especially problematic for realtime applications.
>
> [...]
Applied, thanks!
[1/1] io_uring/sqpoll: inherit cpumask of creating process
commit: b7ed6d8ffd627a3de8b0e336996d0247a6535608
Best regards,
--
Jens Axboe
prev parent reply other threads:[~2024-09-07 13:40 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-09-07 10:02 [PATCH v3 1/1] io_uring/sqpoll: inherit cpumask of creating process Felix Moessbauer
2024-09-07 13:40 ` Jens Axboe [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=172571643542.244981.10331950852185495338.b4-ty@kernel.dk \
[email protected] \
[email protected] \
[email protected] \
[email protected] \
[email protected] \
[email protected] \
[email protected] \
[email protected] \
[email protected] \
[email protected] \
[email protected] \
/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