KDUMP(1) BSD Reference Manual KDUMP(1)
kdump - display kernel trace data
kdump [-dnlRT] [-f file] [-m maxdata] [-t [cnis]]
Kdump displays the kernel trace files produced with ktrace(1) in human
readable format. By default, the file ktrace.out in the current directo-
ry is displayed.
The options are as follows:
-d Display all numbers in decimal.
-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 ad hoc translations. Normally kdump tries to decode
many system calls into a more human readable format. For ex-
ample, 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.
-R Display relative timestamps (time since previous entry).
-T Display absolute timestamps for each entry (seconds since
-t cnis See the -t option of ktrace(1).
The kdump command appears in 4.4BSD.
4.4BSD June 6, 1993 1