scheduler provides a number of
advanced scheduler features not present in
, the traditional system scheduler.
These features address SMP and interactivity and include:
- Thread CPU affinity.
- CPU topology awareness, including for hyper-threading.
- Per-CPU run queues.
- Interactivity heuristics that detect interactive applications and
schedules them preferentially under high load.
The following sysctls are relevant to the operation of
- This read-only sysctl reports the name of the active scheduler.
- This read-write sysctl reports or sets the length of the quantum (in
micro-seconds) granted to a thread.
scheduler first appeared in