Re: [PATCH 0/6] support "dataplane" mode for nohz_full

Paul E. McKenney
2015-05-11T17:19:25Z

On Mon, May 11, 2015 at 08:57:59AM -0400, Steven Rostedt wrote:
>
> NO_HZ_LEAVE_ME_THE_FSCK_ALONE!

NO_HZ_OVERFLOWING?

Kconfig naming controversy aside, I believe this patchset is addressing
a real need. Might need additional adjustment, but something useful.

Thanx, Paul

> On Sat, 9 May 2015 09:05:38 +0200
> Ingo Molnar <mingo@kernel.org> wrote:
>
> > So I think we should either rename NO_HZ_FULL to NO_HZ_PURE, or keep
> > it at NO_HZ_FULL: because the intention of NO_HZ_FULL was always to be
> > such a 'zero overhead' mode of operation, where if user-space runs, it
> > won't get interrupted in any way.
>
>
> All kidding aside, I think this is the real answer. We don't need a new
> NO_HZ, we need to make NO_HZ_FULL work. Right now it doesn't do exactly
> what it was created to do. That should be fixed.
>
> Please lets get NO_HZ_FULL up to par. That should be the main focus.
>
> -- Steve
>