On Tue, 19 Dec 2017 10:19:11 +0100 Peter Zijlstra <[email protected]> wrote:
> On Tue, Dec 19, 2017 at 04:23:57AM +0100, Frederic Weisbecker wrote: > > When a CPU runs in full dynticks mode, a 1Hz tick remains in order to > > keep the scheduler stats alive. However this residual tick is a burden > > for Real-Time tasks that can't stand no interruption at all. > > I'm not sure that is accurate. RT doesn't necessarily have anything much > to so with this. The tick is per definition very deterministic and thus > should not be a problem. What Frederic says is certainly true for HPC. But even for RT I'd say this is a very nice feature, since it may reduce maximum latency.
