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BSD 4.3reno

.\" Copyright (c) 1990 The Regents of the University of California.
.\" All rights reserved.
.\"
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.\" that: (1) source distributions retain this entire copyright notice and
.\" comment, and (2) distributions including binaries display the following
.\" acknowledgement:  ``This product includes software developed by the
.\" University of California, Berkeley and its contributors'' in the
.\" documentation or other materials provided with the distribution and in
.\" all advertising materials mentioning features or use of this software.
.\" Neither the name of the University nor the names of its contributors may
.\" be used to endorse or promote products derived from this software without
.\" specific prior written permission.
.\" THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
.\" WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
.\" MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
.\"
.\"     @(#)kdump.1	1.3 (Berkeley) 7/24/90
.\"
.Dd July 24, 1990
.Dt KDUMP 1
.Sh NAME
.Nm kdump
.Nd display kernel trace data
.Sh SYNOPSIS
.Nm kdump
.Op Fl dnlTR
.Op Fl f Ar trfile
.Op Fl t Ar trstr
.Sh DESCRIPTION
.Nm Kdump
displays kernel trace files produced with
.Xr ktrace 1
in a human readable format.
Without the
.Fl f
flag,
.Nm kdump
reads the file
.Sq Pa ktrace.out
in the current
directory.
.Pp
Options:
.Tw Fl
.Tp Fl d
Display all numbers in decimal.
.Tp Fl n
Suppress ad hoc translations.  Normally
.Nm kdump
tries to decode many
system calls into a more human readable format.  For example, ioctl
values are replaced with the macro name and errno values are replaced
with the
.Li sys_errlist
string.  Suppressing this feature yields a more consistent
output format and is easily amenable to further processing.
.Tp Fl l
Loop reading end-of-file.
.Tp Fl T
Display absolute timestamps for each entry (seconds since epoch).
.Tp Fl R
Display relative timestamps (time since previous entry).
.Tc Fl t
.Ws
.Ar trstr
.Cx
See
.Fl t
in
.Xr ktrace 1 .
.Tc Fl f
.Ws
.Ar trfile
.Cx
See
.Fl t
in
.Xr ktrace 1 .
.Tc Fl m
.Ws
.Ar maxdata
.Cx
Display at most
.Ar maxdata
bytes when decoding i/o.
.Tp
.Sh SEE ALSO
.Xr ktrace 1
\- enable kernel process tracing.
.Sh HISTORY
4.4 BSD.

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