From: Bagas Sanjaya <bagasdotme@gmail.com>
To: Zhang Qiao <zhangqiao22@huawei.com>,
mingo@kernel.org, chrubis@suse.cz, rostedt@goodmis.org,
corbet@lwn.net
Cc: linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH v2] sched/Documentation: Add RT_RUNTIME_SHARE documentation
Date: Fri, 19 Apr 2024 18:56:15 +0700 [thread overview]
Message-ID: <ZiJb319kKznLk6se@archie.me> (raw)
In-Reply-To: <20240419090432.1935211-1-zhangqiao22@huawei.com>
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On Fri, Apr 19, 2024 at 05:04:32PM +0800, Zhang Qiao wrote:
> +2.4 RT_RUNTIME_SHARE sched feature
> +----------------------------------
> +
> +RT_RUNTIME_SHARE allows a cpu to borrow rt-runtime from other cpus if it runs
> +out of its own rt-runtime.
> +
> +With this feature enabled, a rt-task may hit 100% cpu usage and can stall other
> +per-cpu tasks like kworkers, as a result, which leads into system hang.
> +
> +Thus, it is advised to disable this feature by default to avoid aforementioned
> +issue unless you know what you're doing.
>
> 3. Future plans
> ===============
LGTM, thanks!
Reviewed-by: Bagas Sanjaya <bagasdotme@gmail.com>
--
An old man doll... just what I always wanted! - Clara
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prev parent reply other threads:[~2024-04-19 11:56 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-04-19 9:04 [PATCH v2] sched/Documentation: Add RT_RUNTIME_SHARE documentation Zhang Qiao
2024-04-19 11:56 ` Bagas Sanjaya [this message]
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