From: Jens Axboe <[email protected]>
To: [email protected], Felix Moessbauer <[email protected]>
Cc: [email protected], [email protected],
[email protected], [email protected],
[email protected], [email protected],
[email protected], [email protected]
Subject: Re: [PATCH 1/1] io_uring/sqpoll: inherit cpumask of creating process
Date: Fri, 06 Sep 2024 07:54:37 -0600 [thread overview]
Message-ID: <[email protected]> (raw)
In-Reply-To: <[email protected]>
On Fri, 06 Sep 2024 15:44:33 +0200, Felix Moessbauer wrote:
> The submit queue polling threads are "kernel" threads that are started
> from the userland. In case the userland 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: d369fdf0908a8a026a8a4b8729d2a193b75fd2d6
Best regards,
--
Jens Axboe
next prev parent reply other threads:[~2024-09-06 13:54 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-09-06 13:44 [PATCH 1/1] io_uring/sqpoll: inherit cpumask of creating process Felix Moessbauer
2024-09-06 13:47 ` Jens Axboe
2024-09-06 13:52 ` MOESSBAUER, Felix
2024-09-06 13:55 ` Jens Axboe
2024-09-06 13:54 ` Jens Axboe [this message]
2024-09-06 16:00 ` Jens Axboe
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