Re: Severe performance regression w/ 4.4+ on Android due to cgroup locking changes

From: Paul E. McKenney
Date: Wed Jul 13 2016 - 17:18:44 EST


On Wed, Jul 13, 2016 at 05:05:26PM -0400, Tejun Heo wrote:
> On Wed, Jul 13, 2016 at 02:03:15PM -0700, Paul E. McKenney wrote:
> > Take the patch that I just sent out and make the choice of normal
> > vs. expedited depend on CONFIG_PREEMPT_RT or whatever the -rt guys are
> > calling it these days. Is there a low-latency Kconfig option other
> > than CONFIG_NO_HZ_FULL?
>
> Sounds like a plan to me.

I like the way we like each other's idea. Mutually assured laziness? ;-)

Thanx, Paul