Manual Pages  — KTRDUMP

ktrdump – print kernel ktr trace buffer

SYNOPSIS DESCRIPTION SEE ALSO HISTORY AUTHORS

ktrdump [-cflqrtH] [-i ktrfile] [-M core] [-N system] [-o outfile]

The ktrdump utility is used to dump the contents of the kernel ktr trace buffer.

The following options are available:

-c	Print the CPU number that each entry was logged from.
-l	Poll the kernel ktr trace buffer periodically dumping any new events after each poll.
-f	Print the file and line number that each entry was logged from.
-q	Quiet mode; do not print the column header.
-r	Print relative timestamps rather than absolute timestamps.
-t	Print the timestamp for each entry.
-H	Print the thread ID for each entry.
-i ktrfile
	File containing saved ktr trace events; for more information see the ktr(4) manual page.
-N system
	The kernel image to resolve symbols from. The default is the value returned via getbootfile(3).
-M core
	The core file or memory image to read from. The default is /dev/mem.
-o outfile
	The file to write the output to. The default is standard output.

The ktrdump utility first appeared in FreeBSD 5.0 .

The ktrdump utility was implemented by Jake Burkholder <Mt jake@FreeBSD.org>.

This manual page was written by Chad David <Mt davidc@FreeBSD.org>.