KDUMP(1) 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 exam- ple, 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 eas- ily 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 5.5 December 8, 2003 KDUMP(1)
NAME | SYNOPSIS | DESCRIPTION | SEE ALSO | HISTORY
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