Re: Trying to trace when RT FF & RR threads hit RT Throttle limit (kernel.sched_rt_runtime_us)

Steven Rostedt <[email protected]> Tue, 2 May 2023 16:43:11 -0400
Newsgroups org.kernel.vger.linux-trace-users
Message-ID <[email protected]>
On Mon, 1 May 2023 15:35:43 -0400
Brian Hutchinson <[email protected]> wrote:

> I don't "think" anything is moving around here unless the OS is going
> against what it's been told to do.  The cpu's are isolated with
> cmdline at boot and the affinity of these processes has been selected
> when they startup so they should stay where they are put unless there
> is something going on I don't know about.  I think I've seen talk
> before that the affinity is just a "suggestion" making me think there
> are cases where something could move but if that's true I don't know
> what those scenarios are.

BTW, you may want to email the relevant maintainers of the scheduler (yes,
I'm one of them), because it's getting off topic for linux-trace-users.

-- Steve