Messages in this thread | | | Date | Wed, 18 Nov 2015 15:09:44 +0000 | From | Morten Rasmussen <> | Subject | Re: [PATCH 3/4] sched: introduce synchronized idle injection |
| |
On Wed, Nov 18, 2015 at 06:52:33AM -0800, Jacob Pan wrote: > On Wed, 18 Nov 2015 14:04:41 +0000 > Morten Rasmussen <morten.rasmussen@arm.com> wrote: > > > Then I'm confused :-/ > > > > I see the hrtimers, but the actual idle duration appears to be in > > ticks rather than ms and then converted later. > > > > +/* Duration of idle time in ticks of each injection period > > */ +unsigned int sysctl_sched_cfs_idle_inject_duration = 5UL; > > > > ...and futher down we have: > > > > + duration_msec = > > jiffies_to_msecs(sysctl_sched_cfs_idle_inject_duration); > I used hrtimers but still round around tick boundaries of ktime. > It is more reliable than jiffies in terms of getting timely updates.
Okay. But it does mean that the defeault idle period is 5 ticks (50ms @ HZ=100) and not 5 ms.
| |