NAME
sched_ule —
ULE scheduler
SYNOPSIS
options SCHED_ULE
DESCRIPTION
Thesched_ule scheduler provides a number of advanced
scheduler features not present in
sched_4bsd(4), 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
sched_ule:
- kern.sched.name
- This read-only sysctl reports the name of the active scheduler.
- kern.sched.quantum
- This read-write sysctl reports or sets the length of the quantum (in micro-seconds) granted to a thread.
SEE ALSO
HISTORY
The sched_ule scheduler first appeared in
FreeBSD 5.1.
AUTHORS
Jeff Roberson <jeff@FreeBSD.org>