Re: [PATCH] workqueue: add workqueue.mayday_initial_timeout

[ying chen]

On Tue, Nov 11, 2025 at 10:55 AM Matthew Wilcox <willy@xxxxxxxxxxxxx> wrote:
>
> On Tue, Nov 11, 2025 at 10:52:44AM +0800, ying chen wrote:
> > If creating a new worker takes longer than MAYDAY_INITIAL_TIMEOUT,
> > the rescuer thread will be woken up to process works scheduled on
> > @pool, resulting in sequential execution of all works. This may lead
> > to a situation where one work blocks others. However, the initial
> > rescue timeout defaults to 10 milliseconds, which can easily be
> > triggered in heavy-load environments.
>
> Then we should tune it automatically, not blame the admin for not tuning
> this parameter.
Currently, dynamic tuning of the mayday timer's initial timeout is not
supported.