Copyright (c) 1983 The Regents of the University of California.
All rights reserved.

%sccs.include.redist.man%

@(#)kgmon.8 6.3 (Berkeley) 06/24/90

C 5 kgmon - generate a dump of the operating system's profile buffers kgmon [ -b ] [ -h ] [ -r ] [ -p ] [ system ] [ memory ] 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 (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 following options may be specified:

-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.

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.

/vmunix - the default system

/dev/kmem - the default memory

gprof(1), config(8) 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.