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KDUMP(1)	       DragonFly General Commands Manual	      KDUMP(1)

NAME

kdump -- display kernel trace data

SYNOPSIS

kdump [-acdjnlRT] [-f file] [-m maxdata] [-t [cnisuw]] [-p pid]

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: -a Display full human readable output. This option turns on -c and -R. -c Display the cpu the thread is executing on. -d Display all numbers in decimal. -j Use a fixed format output, otherwise a more human readable output is used. -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; set to 0 to disable the size limit. -p pid Display only records for process pid. -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. 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 epoch). -t cnisuw See the -t option of ktrace(1).

SEE ALSO

ktrace(1)

HISTORY

The kdump command appeared in 4.4BSD. DragonFly 3.7 June 6, 1993 DragonFly 3.7