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KDUMP(1)		FreeBSD	General	Commands Manual		      KDUMP(1)

NAME
     kdump -- display kernel trace data

SYNOPSIS
     kdump [-dEnlRsT] [-f trfile] [-m maxdata] [-p pid]	[-t [cnisuw]]

DESCRIPTION
     The kdump command displays	the kernel trace files produced	with ktrace(1)
     in	human readable format.	By default, the	file ktrace.out	in the current
     directory is displayed.

     The options are as	follows:

     -d		 Display all numbers in	decimal.

     -E		 Display elapsed timestamps (time since	beginning of trace).

     -f	trfile	 Display the specified file instead of ktrace.out.

     -l		 Loop reading the trace	file, once the end-of-file is reached,
		 waiting for more data.

     -m	maxdata	 Display at most maxdata bytes when decoding I/O.

     -n		 Suppress ad hoc translations.	Normally kdump tries to	decode
		 many system calls into	a more human readable format.  For
		 example, ioctl(2) values are replaced with the	macro name and
		 errno values are replaced with	the strerror(3)	string.	 Sup-
		 pressing this feature yields a	more consistent	output format
		 and is	easily amenable	to further processing.

     -p	pid	 Display only trace events that	correspond to the process pid.
		 This may be useful when there are multiple processes recorded
		 in the	same trace file.

     -R		 Display relative timestamps (time since previous entry).

     -s		 Suppress display of I/O data.

     -T		 Display absolute timestamps for each entry (seconds since
		 epoch).

     -t	cnisuw	 See the -t option of ktrace(1).

SEE ALSO
     ktrace(1)

HISTORY
     The kdump command appeared	in 4.4BSD.

FreeBSD	9.2		       December	8, 2003			   FreeBSD 9.2

NAME | SYNOPSIS | DESCRIPTION | SEE ALSO | HISTORY

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