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SCHED_4BSD (4) | Special files and drivers | Unix Manual Pages | :man▋
NAME
sched_4bsd - "4.4BSD scheduler"
CONTENTS
Synopsis
Description
See Also
History
Bugs
SYNOPSIS
.Cd "options SCHED_4BSD"
DESCRIPTION
The sched_4bsd scheduler is the default system scheduler, providing both high throughput and solid interactive response in the presence of load. The following sysctls are relevant to the operation of sched_4bsd: | 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. | | kern.sched.ipiwakeup.enabled | | | This read-write sysctl sets whether or not the scheduler will generate an inter-processor interrupt (IPI) to an idle CPU when a thread is woken up. Otherwise, idle CPUs will wait until the next clock tick before looking for new work. | | kern.sched.preemption | | | This read-only sysctl reports whether or not the kernel is configured to support preemption, which reduces the latency to run lower priority threads on wakeup. | |
Some sysctls will be available only on systems supporting SMP.
SEE ALSO
sched_ule(4), sysctl(8)
HISTORY
BUGS
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