.Nd monitors scheduling and interrupt latency
.Sh SYNOPSIS
.Nm latency
-.Op Fl p
+.Op Fl p Ar priority
.Op Fl h
.Op Fl m
.Op Fl st Ar threshold
.It Fl n Ar kernel
By default,
.Nm latency
-acts on the default /mach_kernel.
+acts on the default /System/Library/Kernels/kernel.development.
This option allows you to specify an alternate booted kernel.
.\" ==========
.It Fl p Ar priority
Specifies the priority level to observe scheduler latencies for.
+The default is realtime (
+.Ar 97
+). A range of priorities to monitor
+can also be provided, for example
+.Ar 31-47
+or
+.Ar 0-127
+.
.\" ==========
.It Fl st Ar threshold
Set the scheduler latency threshold in microseconds.