KTRDUMP(8)              FreeBSD System Manager's Manual             KTRDUMP(8)

NAME

     ktrdump - print kernel ktr trace buffer

SYNOPSIS

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

DESCRIPTION

     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.

SEE ALSO

     ktr(4), ktr(9)

HISTORY

     The ktrdump utility first appeared in FreeBSD 5.0.

AUTHORS

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

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

FreeBSD 15.1-STABLE-HBSD       October 22, 2018                     KTRDUMP(8)