KGMON(8) System Manager's Manual KGMON(8)
NAME
kgmongenerate a dump of the operating system's profile buffers
SYNOPSIS
kgmon
[-bdhpr] [-M core] [-N system]
DESCRIPTION
kgmon is a tool used when profiling the operating system. When no arguments are supplied, kgmon indicates the state of operating system profiling as running, off, or not configured (see config(1)). If the -p flag is specified, kgmon extracts profile data from the operating system and produces a gmon.out file suitable for later analysis by gprof(1).
 
The options are as follows:
-b
Resume the collection of profile data.
-d
Enable debug output.
-h
Stop the collection of profile data.
-M
Extract values associated with the name list from the specified core instead of the default /dev/kmem.
-N
Extract the name list from the specified system instead of the default /netbsd.
-p
Dump the contents of the profile buffers into a gmon.out file.
-r
Reset all the profile buffers. If the -p flag is also specified, the gmon.out file is generated before the buffers are reset.
 
If neither -b nor -h is specified, the state of profiling collection remains unchanged. For example, if the -p flag is specified and profile data is being collected, profiling will be momentarily suspended, the operating system profile buffers will be dumped, and profiling will be immediately resumed.
FILES
/netbsd
the default system
/dev/kmem
the default memory
DIAGNOSTICS
Users with only read permission on /dev/kmem cannot change the state of profiling collection. They can get a gmon.out file with the warning that the data may be inconsistent if profiling is in progress.
SEE ALSO
HISTORY
The kgmon command appeared in 4.2BSD.