Documentation/scheduler/sched-rt-group.rst

2 Real-Time group scheduling
12      2.1 System-wide settings
21  Fiddling with these settings can result in an unstable system, the knobs are
27    system when the period is smaller than either the available hrtimer
31    system when the runtime is so small the system has difficulty making
33    are real-time processes).
40 ---------------
50 ----------------
77 lack an EDF scheduler to make non-uniform periods usable.
84 2.1 System wide settings
85 ------------------------
87 The system wide settings are configured under the /proc virtual file system:
101   * sched_rt_runtime_us takes values from -1 to (INT_MAX - 1).
102   * A run time of -1 specifies runtime == period, ie. no limit.
106 ---------------------
110 SCHED_OTHER (non-RT tasks). These defaults were chosen so that a run-away
112 it.  By setting runtime to -1 you'd get the old behaviour back.
127 ----------------------------
132 This uses the cgroup virtual file system and "<cgroup>/cpu.rt_runtime_us"
136 Documentation/admin-guide/cgroup-v1/cgroups.rst as well.
163 	- this runs for 0.05s once every 0.1s
167 	- this runs for 0.025s twice every 0.1s (or once every 0.05 sec).
180 the limited static priority levels 0-99. With deadline scheduling you need to
182 deadline delta (deadline - now)).
184 This means the whole PI machinery will have to be reworked - and that is one of