Manual Reference Pages - SCHED_4BSD (4)
- 4.4BSD scheduler
.Cd options SCHED_4BSD
is the traditional system scheduler, providing both high throughput and solid
interactive response in the presence of 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.
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
This read-only sysctl reports whether or not the kernel is configured to
support preemption, which reduces the latency to run lower priority threads
Some sysctls will be available only on systems supporting SMP.
scheduler has been present, in various forms, since the inception of
While a highly robust and time-tested scheduler,
lacks specific knowledge of how to schedule advantageously in non-symmetric
processor configurations, such as hyper-threading.
Visit the GSP FreeBSD Man Page Interface.
Output converted with manServer 1.07.