kdump [option]

Decode and display a kernel trace file produced by ktrace. By default, kdump processes any ktrace.out file found in the current working directory.



Show all numbers in decimal format.

-f tracefile

Process the file tracefile instead of ktrace.out.


Continue to read and display the trace file as new trace data is added.

-m maxdata

When decoding I/O data, show no more than maxdata bytes.


Don't decode completely; display some values, such as those from ioctl and errno, in their raw format.


With each entry, show time since previous entry (relative timestamp).

-t tracepoints

Show only the traces specified in tracepoints (see kdump 's -t option).


With each entry, show seconds since the epoch (absolute timestamp).

Get Mac OS X Tiger in a Nutshell now with O’Reilly online learning.

O’Reilly members experience live online training, plus books, videos, and digital content from 200+ publishers.