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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




      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]

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