Re: [RFC][PATCH 1/2] sched: Extended scheduler time slice

On Mon, 10 Feb 2025 12:27:00 -0500
Steven Rostedt [off-list ref] wrote:

On Mon, 10 Feb 2025 17:20:59 +0000
David Laight [off-list ref] wrote:

quoted

Hmmm... you lose big-time anyway.

All you need is a lot of network traffic 'pinch' the process context until
the hardware interrupt, NAPI softint code and rcu softint code completes.
That can easily take several milliseconds.  

Not on PREEMPT_RT. All that runs as threads.

And this is a feature that we would like on RT for non RT tasks.

Actually, this doesn't even need PREEMPT_RT to not hit your example. You
can build and boot your system with interrupts as threads, and that also
includes softirqs.

-- Steve