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NetBSD 6.1.5 - man page for kdump (netbsd section 1)

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KDUMP(1)			   BSD General Commands Manual				 KDUMP(1)

NAME
     kdump -- display kernel trace data

SYNOPSIS
     kdump [-dlNnRT] [-e emulation] [-f file] [-m maxdata] [-p pid] [-t trstr] [-x | -X size]
	   [file]

DESCRIPTION
     kdump displays the kernel trace files produced with ktrace(1) in human readable format.  The
     file ktrace.out in the current directory is displayed, unless either the -f option is used,
     or a file name is supplied as the last argument.

     The options are as follows:

     -d 	 Display all numbers in decimal.

     -e emulation
		 If an emulation of a process is unknown, interpret system call maps assuming the
		 named emulation instead of default "netbsd".

     -f file	 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 system call number-to-name translation.

     -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.
		 Suppressing this feature yields a more consistent output format and is easily
		 amenable to further processing.

     -p pid	 Only display records from the trace file that are for the indicated pid.

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

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

     -t trstr	 Restrict display to the specified set of kernel trace points.	The default is to
		 display everything in the file.  See the -t option of ktrace(1).

     -x 	 Display GIO data in hex and ascii instead of vis(3) format.

     -X size	 Same as -x but display hex values by groups of size bytes.  Supported values are
		 1, 2, 4, 8, and 16.

SEE ALSO
     ktrace(1)

HISTORY
     The kdump command appears in 4.4BSD.

BSD					November 15, 2003				      BSD
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