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
<
[email protected]>.
This manual page was written by Chad David <
[email protected]>.
FreeBSD 14.1-RELEASE-p8 October 22, 2018 FreeBSD 14.1-RELEASE-p8