Re: [PATCH RFC tip/core/rcu 1/9] rcu: Add call_rcu_tasks()

[Paul E. McKenney]

On Fri, Aug 01, 2014 at 04:59:35AM +0200, Mike Galbraith wrote:
> On Thu, 2014-07-31 at 09:38 -0700, Paul E. McKenney wrote:
> 
> > Does building with CONFIG_NO_HZ_FULL_SYSIDLE=y slow things down even more?
> > If so, that would give me a rough idea of the cost of RCU's dyntick-idle
> > handling.
> 
> Nope.  Deltas are all down in the statistical frog hair.

OK, then I guess that trying to squeeze down RCU's dyntick-idle detection
won't be much help.  Worth a thought, though, and thank you for running
the tests!

							Thanx, Paul

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