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KGMON(8)		FreeBSD	System Manager's Manual		      KGMON(8)

NAME
     kgmon -- generate a dump of the operating system's	profile	buffers

SYNOPSIS
     kgmon [-Bbhpr] [-M	-core] [-N -system]

DESCRIPTION
     The kgmon utility is 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(8)) 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 high resolution profile data.

     -b	     Resume the	collection of low resolution profile data.

     -h	     Stop the collection of profile data.

     -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.

     -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 /kernel.

     If	neither	-B nor -b nor -h is specified, the state of profiling collec-
     tion 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.

     The profile buffers should	be reset when the resolution of	the profile
     data is changed.

FILES
     /kernel	 the default system
     /dev/kmem	 the default memory

SEE ALSO
     gprof(1), config(8)

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.

HISTORY
     The kgmon utility appeared	in 4.2BSD.

FreeBSD	9.3			 June 6, 1993			   FreeBSD 9.3

NAME | SYNOPSIS | DESCRIPTION | FILES | SEE ALSO | DIAGNOSTICS | HISTORY

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