On Tue, 21 Jan 2014 16:46:03 +0100 Peter Zijlstra <[email protected]> wrote:
> On Tue, Jan 21, 2014 at 04:38:51PM +0100, Peter Zijlstra wrote: > > SCHED_DEADLINE: Sporadic task model deadline scheduling > > SCHED_DEADLINE is an implementation of GEDF (Global Earliest > > Deadline First) with additional CBS (Constant Bandwidth Server). > > We might want to re-word that to: > > SCHED_DEADLINE currently is an implementation of GEDF, however > any policy that correctly schedules the sporadic task model is > a valid implementation. > > To make sure we should not rely on the actual implementation; there's > many possible algorithms to schedule the sporadic task model. Probably should post some links to GEDF documentation too? -- Steve > > > The CBS guarantees that tasks that over-run their specified > > budget are throttled and do not affect the correct performance > > of other SCHED_DEADLINE tasks. > > > > SCHED_DEADLINE tasks will fail FORK(2) with -EAGAIN > > > > Setting SCHED_DEADLINE can fail with -EINVAL when admission > > control tests fail. > > -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
