On Thu, Sep 06, 2012 at 08:28:21PM +0200, Peter Zijlstra wrote:
> On Thu, 2012-09-06 at 10:53 -0700, Paul E. McKenney wrote:
>
> > > - how do I know if my workload wants a longer or shorter forced qs
> > >period?
> >
> > Almost everyone can do just fine with the defaults. If you have more
>
On Thu, 2012-09-06 at 10:53 -0700, Paul E. McKenney wrote:
> > - how do I know if my workload wants a longer or shorter forced qs
> >period?
>
> Almost everyone can do just fine with the defaults. If you have more
> than about 1,000 CPUs, you might need a longer period.
Because the cost o
On Thu, Sep 06, 2012 at 04:15:30PM +0200, Peter Zijlstra wrote:
> On Thu, 2012-08-30 at 11:18 -0700, Paul E. McKenney wrote:
> > From: "Paul E. McKenney"
> >
> > Some uses of RCU benefit from shorter grace periods, while others benefit
> > more from the greater efficiency provided by longer grace
On Thu, 2012-08-30 at 11:18 -0700, Paul E. McKenney wrote:
> From: "Paul E. McKenney"
>
> Some uses of RCU benefit from shorter grace periods, while others benefit
> more from the greater efficiency provided by longer grace periods.
> Therefore, this commit allows the durations to be controlled f
On Mon, Sep 03, 2012 at 02:30:16AM -0700, Josh Triplett wrote:
> On Thu, Aug 30, 2012 at 11:18:28AM -0700, Paul E. McKenney wrote:
> > From: "Paul E. McKenney"
> >
> > Some uses of RCU benefit from shorter grace periods, while others benefit
> > more from the greater efficiency provided by longer
On Thu, Aug 30, 2012 at 11:18:28AM -0700, Paul E. McKenney wrote:
> From: "Paul E. McKenney"
>
> Some uses of RCU benefit from shorter grace periods, while others benefit
> more from the greater efficiency provided by longer grace periods.
> Therefore, this commit allows the durations to be contr
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