kgmon man page on 4.4BSD

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

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

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

DESCRIPTION
     Kgmon is a tool used when profiling the operating system.	When no argu‐
     ments are supplied, kgmon indicates the state of operating system profil‐
     ing 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 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 ``/vmunix''.

     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
     /vmunix	 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 command appeared in 4.2BSD.

4.2 Berkeley Distribution	 June 6, 1993	     4.2 Berkeley Distribution
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