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.
