1.\" Copyright (c) 1990, 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.\" @(#)kdump.1 8.1 (Berkeley) 6/6/93 33.\" $FreeBSD$ 34.\" 35.Dd June 6, 1993 36.Dt KDUMP 1 37.Os 38.Sh NAME 39.Nm kdump 40.Nd display kernel trace data 41.Sh SYNOPSIS 42.Nm 43.Op Fl dnlRT 44.Op Fl f Ar file 45.Op Fl m Ar maxdata 46.Op Fl p Ar pid 47.Op Fl t Op cnisuw 48.Sh DESCRIPTION 49The 50.Nm 51command displays the kernel trace files produced with 52.Xr ktrace 1 53in human readable format. 54By default, the file 55.Pa ktrace.out 56in the current directory is displayed. 57.Pp 58The options are as follows: 59.Bl -tag -width Fl 60.It Fl d 61Display all numbers in decimal. 62.It Fl f Ar file 63Display the specified file instead of 64.Pa ktrace.out . 65.It Fl l 66Loop reading the trace file, once the end-of-file is reached, waiting for 67more data. 68.It Fl m Ar maxdata 69Display at most 70.Ar maxdata 71bytes when decoding 72.Tn I/O . 73.It Fl n 74Suppress ad hoc translations. 75Normally 76.Nm 77tries to decode many system calls into a more human readable format. 78For example, 79.Xr ioctl 2 80values are replaced with the macro name and 81.Va errno 82values are replaced with the 83.Xr strerror 3 84string. 85Suppressing this feature yields a more consistent output format and is 86easily amenable to further processing. 87.It Fl p Ar pid 88Display only trace events that correspond to the process 89.Ar pid . 90This may be useful when there are multiple processes recorded in the 91same trace file. 92.It Fl R 93Display relative timestamps (time since previous entry). 94.It Fl T 95Display absolute timestamps for each entry (seconds since epoch). 96.It Fl t Ar cnisuw 97See the 98.Fl t 99option of 100.Xr ktrace 1 . 101.El 102.Sh SEE ALSO 103.Xr ktrace 1 104.Sh HISTORY 105The 106.Nm 107command appeared in 108.Bx 4.4 . 109