1.\" Copyright (c) 1983, 1991, 1993 2.\" The Regents of the University of California. All rights reserved. 3.\" 4.\" Redistribution and use in source and binary forms, with or without 5.\" modification, are permitted provided that the following conditions 6.\" are met: 7.\" 1. Redistributions of source code must retain the above copyright 8.\" notice, this list of conditions and the following disclaimer. 9.\" 2. Redistributions in binary form must reproduce the above copyright 10.\" notice, this list of conditions and the following disclaimer in the 11.\" documentation and/or other materials provided with the distribution. 12.\" 3. All advertising materials mentioning features or use of this software 13.\" must display the following acknowledgement: 14.\" This product includes software developed by the University of 15.\" California, Berkeley and its contributors. 16.\" 4. Neither the name of the University nor the names of its contributors 17.\" may be used to endorse or promote products derived from this software 18.\" without specific prior written permission. 19.\" 20.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 21.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 22.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 23.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 24.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 25.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 26.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 27.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 28.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 29.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 30.\" SUCH DAMAGE. 31.\" 32.\" from: @(#)kgmon.8 8.1 (Berkeley) 6/6/93 33.\" $Id: kgmon.8,v 1.1.1.1 1995/10/18 08:47:38 deraadt Exp $ 34.\" 35.Dd June 6, 1993 36.Dt KGMON 8 37.Os BSD 4.2 38.Sh NAME 39.Nm kgmon 40.Nd generate a dump of the operating system's profile buffers 41.Sh SYNOPSIS 42.Nm kgmon 43.Op Fl bhpr 44.Op Fl M core 45.Op Fl N system 46.Sh DESCRIPTION 47.Nm Kgmon 48is a tool used when profiling the operating system. 49When no arguments are supplied, 50.Nm kgmon 51indicates the state of operating system profiling as running, 52off, or not configured. 53(see 54.Xr config 8 ) 55If the 56.Fl p 57flag is specified, 58.Nm kgmon 59extracts profile data from the operating system and produces a 60.Pa gmon.out 61file suitable for later analysis by 62.Xr gprof 1 . 63.Pp 64The options are as follows: 65.Bl -tag -width Ds 66.It Fl b 67Resume the collection of profile data. 68.It Fl h 69Stop the collection of profile data. 70.It Fl p 71Dump the contents of the profile buffers into a 72.Pa gmon.out 73file. 74.It Fl r 75Reset all the profile buffers. 76If the 77.Fl p 78flag is also specified, the 79.Pa gmon.out 80file is generated before the buffers are reset. 81.It Fl M 82Extract values associated with the name list from the specified core 83instead of the default ``/dev/kmem''. 84.It Fl N 85Extract the name list from the specified system instead of the 86default ``/netbsd''. 87.El 88.Pp 89If neither 90.Fl b 91nor 92.Fl h 93is specified, the state of profiling collection remains unchanged. 94For example, if the 95.Fl p 96flag is specified and profile data is being collected, 97profiling will be momentarily suspended, 98the operating system profile buffers will be dumped, 99and profiling will be immediately resumed. 100.Sh FILES 101.Bl -tag -width /dev/kmemx -compact 102.It Pa /netbsd 103the default system 104.It Pa /dev/kmem 105the default memory 106.El 107.Sh SEE ALSO 108.Xr gprof 1 , 109.Xr config 8 110.Sh DIAGNOSTICS 111Users with only read permission on 112.Pa /dev/kmem 113cannot change the state 114of profiling collection. 115They can get a 116.Pa gmon.out 117file with the warning that the data may be 118inconsistent if profiling is in progress. 119.Sh HISTORY 120The 121.Nm 122command appeared in 123.Bx 4.2 . 124