Provided by: freebsd-manpages_6.2-1_all
sched_ule - ULE Scheduler
The sched_ule scheduler is an experimental scheduler that provides a
number of advanced scheduler features not present in sched_4bsd(4), the
default system scheduler. These features address SMP and interactivity
· 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:
This read-only sysctl reports the name of the active scheduler.
The sched_ule scheduler is disabled by default as it is experimental.
See the BUGS section for more information.
The sched_ule scheduler first appeared in FreeBSD 5.1.
Jeff Roberson 〈jeff@FreeBSD.org〉
As an experimental scheduler, sched_ule is not enabled by default due to
a number of known issues, including weak performance with several known
workloads, and reports of instability. Deployment of sched_ule in
production environments is not recommended at this time.