NAME

     sched_ule — ULE scheduler

SYNOPSIS

     options SCHED_ULE

DESCRIPTION

     The sched_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

     sched_4bsd(4), sysctl(8)

HISTORY

     The sched_ule scheduler first appeared in FreeBSD 5.1.

AUTHORS

     Jeff Roberson <jeff@FreeBSD.org>