The
sched_4bsd
scheduler
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
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.
