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